Sample & Buy Product Folder Support & Community Tools & Software Technical Documents Reference Design LP38691, LP38693, LP38691-Q1, LP38693-Q1 SNVS321O - JANUARY 2005 - REVISED DECEMBER 2015 LP3869x/-Q1 500-mA Low-Dropout CMOS Linear Regulators Stable With Ceramic Output Capacitors 1 Features 3 Description * * The LP3869x low-dropout CMOS linear regulators provide tight output tolerance (2% typical), extremely low dropout voltage (250 mV at 500-mA load current, VOUT = 5 V), and excellent AC performance using ultralow equivalent series resistance (ESR) ceramic output capacitors. 1 * * * * * * * * * Wide Input Voltage Range (2.7 V to 10 V) All WSON Options are Available as AEC-Q100 Grade 1 2% Output Accuracy (25C) Low Dropout Voltage: 250 mV at 500 mA (Typical, 5 V Out) Precision (Trimmed) Bandgap Reference Ensured Specifications for -40C to 125C 1-A Off-State Quiescent Current Thermal Overload Protection Foldback Current Limiting Ground Pin Current: 55 A (typical) at full load Enable Pin (LP38693) The use of a PMOS power transistor means that no DC base-drive current is required to bias it, thus allowing ground pin current to remain below 100 A regardless of load current, input voltage, or operating temperature. Device Information(1) 2 Applications * * * * The low thermal resistance of the WSON, SOT-223, and TO-252 packages allow use of the full operating current even in high ambient temperature environments. PART NUMBER Hard Disk Drives Notebook Computers Battery-Powered Devices Portable Instrumentation LP38691 LP38693 LP38691-Q1 LP38693-Q1 PACKAGE BODY SIZE (NOM) TO-252 (3) 6.58 mm x 6.10 mm WSON (6) 3.00 mm x 3.00 mm SOT-223 (5) 6.50 mm x 3.56 mm WSON (6) 3.00 mm x 3.00 mm WSON (6) 3.00 mm x 3.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. 4 Typical Application Circuits VIN VOUT IN VIN OUT LP38691 ** SNS 1 F * VOUT IN GND 1 F * VEN 1 F * EN OUT LP38693 ** SNS GND 1 F * * Minimum value required for stability ** WSON package devices only * Minimum value required for stability ** WSON package devices only 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. LP38691, LP38693, LP38691-Q1, LP38693-Q1 SNVS321O - JANUARY 2005 - REVISED DECEMBER 2015 www.ti.com Table of Contents 1 2 3 4 5 6 7 8 Features .................................................................. Applications ........................................................... Description ............................................................. Typical Application Circuits ................................. Revision History..................................................... Pin Configuration and Functions ......................... Specifications......................................................... 1 1 1 1 2 3 4 7.1 7.2 7.3 7.4 7.5 7.6 7.7 4 4 4 4 5 5 7 Absolute Maximum Ratings ...................................... ESD Ratings: LP38691 and LP38693....................... ESD Ratings: LP38691-Q1 and LP38693-Q1........... Recommended Operating Conditions....................... Thermal Information .................................................. Electrical Characteristics........................................... Typical Characteristics .............................................. Detailed Description ............................................ 11 8.1 Overview ................................................................. 11 8.2 Functional Block Diagrams ..................................... 11 8.3 Feature Description................................................. 13 8.4 Device Functional Modes........................................ 13 9 Application and Implementation ........................ 14 9.1 Application Information............................................ 14 9.2 Typical Application ................................................. 14 10 Power Supply Recommendations ..................... 19 11 Layout................................................................... 19 11.1 Layout Guidelines ................................................. 19 11.2 Layout Example .................................................... 19 11.3 WSON Mounting ................................................... 20 12 Device and Documentation Support ................. 21 12.1 12.2 12.3 12.4 12.5 12.6 Documentation Support ........................................ Related Links ........................................................ Community Resources.......................................... Trademarks ........................................................... Electrostatic Discharge Caution ............................ Glossary ................................................................ 21 21 21 21 21 21 13 Mechanical, Packaging, and Orderable Information ........................................................... 21 5 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision N (March 2015) to Revision O Page * Added top navigator icon for TI Designs ............................................................................................................................... 1 * Added Caution note to Foldback Current Limiting subsection ............................................................................................ 13 Changes from Revision M (February 2015) to Revision N * Page Added "Cout = xx pF" to "Cout = F" for Figures 4 through 6 in Typical Characteristics ...................................................... 1 Changes from Revision L (December 2014) to Revision M Page * Changed wording of Description and added one item to Features; update Vin, Vout and Ven pin names to IN, OUT, and EN in text and graphics .................................................................................................................................................. 1 * Added top navigator icon for TI Designs ............................................................................................................................... 1 * Changed "PFM" to 'TO-252" .................................................................................................................................................. 4 * Changed Handling Ratings to ESD Ratings format ............................................................................................................... 4 Changes from Revision K (April 2013) to Revision L * Page Added Handling Rating table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section; update thermal values .......................... 1 Changes from Revision J (April 2013) to Revision K * 2 Page Changed layout of National Data Sheet to TI format ........................................................................................................... 18 Submit Documentation Feedback Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LP38691 LP38693 LP38691-Q1 LP38693-Q1 LP38691, LP38693, LP38691-Q1, LP38693-Q1 www.ti.com SNVS321O - JANUARY 2005 - REVISED DECEMBER 2015 6 Pin Configuration and Functions NDP Package 3-Pin TO-252 Top View NDC Package 5-Pin SOT-223 Top View EN 1 N/C 2 5 GND OUT 3 IN 4 NC - No internal connection NGG Package 6-Pin WSON With Exposed Thermal Pad LP38691SD Top View IN 1 GND 2 N/C 3 Exposed Pad on Bottom (DAP) 6 IN 5 SNS 4 OUT NC - No internal connection NGG Package 6-Pin WSON With Exposed Thermal Pad LP38693SD Top View Copyright (c) 2005-2015, Texas Instruments Incorporated IN 1 GND 2 EN 3 Exposed Pad on Bottom (DAP) 6 IN 5 SNS 4 OUT Submit Documentation Feedback Product Folder Links: LP38691 LP38693 LP38691-Q1 LP38693-Q1 3 LP38691, LP38693, LP38691-Q1, LP38693-Q1 SNVS321O - JANUARY 2005 - REVISED DECEMBER 2015 www.ti.com Pin Functions PIN NAME TO252 WSON SOT223 I/O DESCRIPTION DAP -- -- -- WSON Only - The DAP (Exposed Pad) functions as a thermal connection when soldered to a copper plane. See WSON Mounting section for more information. EN -- -- 3 1 I The EN pin allows the part to be turned ON and OFF by pulling this pin high or low. TAB 2 2 5 -- Circuit ground for the regulator. For the TO-252 and SOT-223 packages this is thermally connected to the die and functions as a heat sink when the soldered down to a large copper plane. IN 3 1, 6 1, 6 4 I This is the input supply voltage to the regulator. For WSON devices, both IN pins must be tied together for full current operation (250 mA maximum per pin). OUT 1 4 4 3 O Regulated output voltage SNS -- 5 5 -- I WSON Only - Output SNS pin allows remote sensing at the load which eliminate the error in output voltage due to voltage drops caused by the resistance in the traces between the regulator and the load. This pin must be tied to OUT. GND 7 Specifications 7.1 Absolute Maximum Ratings (1) (2) MIN MAX UNIT 260 C Internally Limited V Lead temp. (Soldering, 5 seconds) Power dissipation (3) V(max) All pins (with respect to GND) IOUT -0.3 (4) 12 V Internally Limited V Junction temperature -40 150 Storage temperature, Tstg -65 150 (1) (2) (3) (4) C Absolute maximum ratings indicate limits beyond which damage to the component may occur. Operating ratings indicate conditions for which the device is intended to be functional, but do not ensure specific performance limits. For ensured specifications, see Electrical Characteristics. Specifications do not apply when operating the device outside of its rated operating conditions. If Military/Aerospace specified devices are required, contact the Texas Instruments Sales Office/ Distributors for availability and specifications. At elevated temperatures, device power dissipation must be derated based on package thermal resistance and heatsink values (if a heatsink is used). When using the WSON package, refer to AN-1187 Leadless Leadframe Package (LLP), SNOA401, and the WSON Mounting section in this datasheet. If power dissipation causes the junction temperature to exceed specified limits, the device goes into thermal shutdown. If used in a dual-supply system where the regulator load is returned to a negative supply, the output pin must be diode clamped to ground. 7.2 ESD Ratings: LP38691 and LP38693 V(ESD) (1) Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001 (1) Electrostatic discharge VALUE UNIT 2000 V JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. 7.3 ESD Ratings: LP38691-Q1 and LP38693-Q1 V(ESD) (1) Electrostatic discharge Human-body model (HBM), per AEC Q100-002 VALUE UNIT 2000 V (1) AEC Q100-002 indicates that HBM stressing shall be in accordance with the ANSI/ESDA/JEDEC JS-001 specification. 7.4 Recommended Operating Conditions MIN VIN supply voltage Operating junction temperature 4 Submit Documentation Feedback NOM MAX UNIT 2.7 10 V -40 125 C Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LP38691 LP38693 LP38691-Q1 LP38693-Q1 LP38691, LP38693, LP38691-Q1, LP38693-Q1 www.ti.com SNVS321O - JANUARY 2005 - REVISED DECEMBER 2015 7.5 Thermal Information THERMAL METRIC (1) LP38691 LP38693 LP3869x TO-252 WSON SOT-223 3 PINS 6 PINS 5 PINS UNIT RJA (2) Junction-to-ambient thermal resistance 50.5 50.6 68.5 C/W RJC(top) Junction-to-case (top) thermal resistance 52.6 44.4 52.2 C/W RJB Junction-to-board thermal resistance 29.7 24.9 13.0 C/W JT Junction-to-top characterization parameter 4.8 0.4 5.5 C/W JB Junction-to-board characterization parameter 29.3 25.1 12.8 C/W RJC(bot) Junction-to-case (bottom) thermal resistance 1.5 5.4 n/a C/W (1) (2) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953. Junction-to-ambient thermal resistance, High-K. 7.6 Electrical Characteristics Unless otherwise specified, limits apply for TJ = 25C, VIN = VOUT + 1 V, CIN = COUT = 10 F, ILOAD = 10 mA. Minimum and maximum limits are specified through testing, statistical correlation, or design. PARAMETER VO TEST CONDITIONS Output voltage tolerance VO/VIN VO/IL Output voltage line regulation (2) Output voltage load regulation (3) 100 A < IL < 0.5 A VO + 1 V VIN 10 V Full operating temperature range VO + 0.5 V VIN 10 V IL = 25 mA (VO = 3.3 V) Full operating temperature range (VO = 5 V) (VO = 5 V) Full operating temperature range (4) 2 -4 4 UNIT %VOUT %/V 0.1 1.8 %/A 1 mA < IL < 0.5 A VIN = VO + 1 V Full operating temperature range (VO = 3.3 V) MAX -2 0.03 1 mA < IL < 0.5 A VIN = VO + 1 V (VO = 2.5 V) Full operating temperature range (1) (2) (3) TYP (1) VO + 0.5 V VIN 10 V IL = 25 mA Full operating temperature range (VO = 2.5 V) VIN - VOUT Dropout voltage (4) MIN 5 IL = 0.1 A 80 IL = 0.5 A 430 IL = 0.1 A 145 IL = 0.5 A 725 IL = 0.1 A 65 IL = 0.5 A 330 IL = 0.1 A 110 IL = 0.5 A 550 IL = 0.1 A 45 IL = 0.5 A 250 IL = 0.1 A 100 IL = 0.5 A 450 mV Typical numbers represent the most likely parametric norm for 25C operation. Output voltage line regulation is defined as the change in output voltage from nominal value resulting from a change in input voltage. Output voltage load regulation is defined as the change in output voltage from nominal value as the load current increases from 1 mA to full load. Dropout voltage is defined as the minimum input to output differential required to maintain the output within 100 mV of nominal value. Copyright (c) 2005-2015, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: LP38691 LP38693 LP38691-Q1 LP38693-Q1 5 LP38691, LP38693, LP38691-Q1, LP38693-Q1 SNVS321O - JANUARY 2005 - REVISED DECEMBER 2015 www.ti.com Electrical Characteristics (continued) Unless otherwise specified, limits apply for TJ = 25C, VIN = VOUT + 1 V, CIN = COUT = 10 F, ILOAD = 10 mA. Minimum and maximum limits are specified through testing, statistical correlation, or design. PARAMETER TEST CONDITIONS MIN VIN 10 V, IL =100 A - 0.5 A IQ TYP (1) VIN 10 V, IL =100 A - 0.5 A Full operating temperature range Quiescent current 0.001 VIN - VO 4 V Full operating temperature range IL(MIN) Minimum load current IFB Foldback current limit PSRR Ripple rejection TSD Thermal shutdown activation (junction temp) 160 TSD (HYST) Thermal shutdown hysteresis (junction temp) 10 en Output noise VIN - VO > 5 V 350 VIN - VO < 4 V 850 IEN 6 Enable pin leakage (lLP38693 only) dB C BW = 10 Hz to 10 kHz VO = 3.3 V 0.7 VO = VO(NOM) + 1 V at 10 VIN 0.5 V/Hz 12 A 0.4 Output = ON, VIN = 4 V Full operating temperature range 1.8 Output = ON, VIN = 6 V Full operating temperature range 3 Output = ON, VIN = 10 V Full operating temperature range 4 V VEN = 0 V or 10 V, VIN = 10 V Submit Documentation Feedback A mA 55 Output = OFF Full operating temperature range VEN 1 100 VIN = VO + 2 V(DC), with 1 V(p-p) / 120-Hz Ripple Enable voltage (LP38693 Only) UNIT 100 VEN 0.4 V, (LP38693 Only) VO (LEAK) Output leakage current MAX 55 -1 0.001 1 A Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LP38691 LP38693 LP38691-Q1 LP38693-Q1 LP38691, LP38693, LP38691-Q1, LP38693-Q1 www.ti.com SNVS321O - JANUARY 2005 - REVISED DECEMBER 2015 7.7 Typical Characteristics Unless otherwise specified: TJ = 25C, CIN = COUT = 10 F, EN pin is tied to IN (LP38693 only), VOUT = 1.8 V, VIN = VOUT 1 V, IL = 10 mA. Figure 2. Noise vs Frequency Figure 1. Noise vs Frequency 60 RIPPLE REJECTION (dB) 50 40 30 COUT = 10 PF 20 VIN(DC) = 5.3V VIN(AC) = 1V(p-p) 10 VOUT = 3.3V 0 10 100 1k 10k 100k FREQUENCY (Hz) Figure 4. Ripple Rejection 60 60 50 50 RIPPLE REJECTION (dB) RIPPLE REJECTION (dB) Figure 3. Noise vs Frequency 40 30 COUT = 100 PF 20 VIN(DC) = 5.3V VIN(AC) = 1V(p-p) 10 40 30 COUT = 1 PF 20 VIN(DC) = 5.3V VIN(AC) = 1V(p-p) 10 VOUT = 3.3V VOUT = 3.3V 0 0 10 100 1k 10k 100k 10 100 1k 10k FREQUENCY (Hz) FREQUENCY (Hz) Figure 5. Ripple Rejection Figure 6. Ripple Rejection Copyright (c) 2005-2015, Texas Instruments Incorporated 100k Submit Documentation Feedback Product Folder Links: LP38691 LP38693 LP38691-Q1 LP38693-Q1 7 LP38691, LP38693, LP38691-Q1, LP38693-Q1 SNVS321O - JANUARY 2005 - REVISED DECEMBER 2015 www.ti.com Typical Characteristics (continued) Unless otherwise specified: TJ = 25C, CIN = COUT = 10 F, EN pin is tied to IN (LP38693 only), VOUT = 1.8 V, VIN = VOUT 1 V, IL = 10 mA. VOUT = 3.3V COUT = 100 PF 'VOUT (mV) 20 10 VOUT 0 -10 -20 4 VIN (V) 5 VIN 3 200 Ps/DIV 8 Figure 7. Line Transient Response Figure 8. Line Transient Response Figure 9. Line Transient Response Figure 10. Load Transient Response Figure 11. Load Transient Response Figure 12. VOUT vs Temperature (5.0 V) Submit Documentation Feedback Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LP38691 LP38693 LP38691-Q1 LP38693-Q1 LP38691, LP38693, LP38691-Q1, LP38693-Q1 www.ti.com SNVS321O - JANUARY 2005 - REVISED DECEMBER 2015 Typical Characteristics (continued) Unless otherwise specified: TJ = 25C, CIN = COUT = 10 F, EN pin is tied to IN (LP38693 only), VOUT = 1.8 V, VIN = VOUT 1 V, IL = 10 mA. Figure 13. VOUT vs Temperature (3.3 V) Figure 14. VOUT vs Temperature (2.5 V) Figure 15. VOUT vs Temperature (1.8 V) Figure 16. VOUT vs VIN (1.8 V) Figure 17. VOUT vs VIN, Power-Up Figure 18. Enable Voltage vs Temperature Copyright (c) 2005-2015, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: LP38691 LP38693 LP38691-Q1 LP38693-Q1 9 LP38691, LP38693, LP38691-Q1, LP38693-Q1 SNVS321O - JANUARY 2005 - REVISED DECEMBER 2015 www.ti.com Typical Characteristics (continued) Unless otherwise specified: TJ = 25C, CIN = COUT = 10 F, EN pin is tied to IN (LP38693 only), VOUT = 1.8 V, VIN = VOUT 1 V, IL = 10 mA. Figure 19. Load Regulation vs Temperature Figure 20. Line Regulation vs Temperature 2.7 900 800 2.6 700 VDROPOUT (mV) MIN VIN (V) 2.5 2.4 -40C 2.3 -40C 600 500 400 125C 300 2.2 25C 125C 2.1 200 100 25C 0 2 0 100 200 300 400 IOUT (mA) Figure 21. MIN VIN vs IOUT 10 Submit Documentation Feedback 500 0 100 200 300 400 500 IOUT (mA) Figure 22. Dropout Voltage vs IOUT Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LP38691 LP38693 LP38691-Q1 LP38693-Q1 LP38691, LP38693, LP38691-Q1, LP38693-Q1 www.ti.com SNVS321O - JANUARY 2005 - REVISED DECEMBER 2015 8 Detailed Description 8.1 Overview The LP38691 and LP38693 are designed to meet the requirements of portable, battery-powered digital systems providing an accurate output voltage with fast start-up. When disabled via a low logic signal at the enable pin (EN), the power consumption is reduced to virtually zero (LP38693 only). The LP38691 and LP38693 perform well with a single 1-F input capacitor and a single 1-F ceramic output capacitor. 8.2 Functional Block Diagrams IN P-FET N/C + ENABLE LOGIC P-FET MOSFET DRIVER FOLDBACK CURRENT LIMITING OUT SNS THERMAL SHUTDOWN 1.25-V REFERENCE R1 R2 GND Figure 23. LP38691 Functional Diagram (WSON) IN P-FET + ENABLE LOGIC P-FET MOSFET DRIVER FOLDBACK CURRENT LIMITING THERMAL SHUTDOWN OUT 1.25-V REFERENCE R1 R2 GND Figure 24. LP38691 Functional Diagram (TO-252) Copyright (c) 2005-2015, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: LP38691 LP38693 LP38691-Q1 LP38693-Q1 11 LP38691, LP38693, LP38691-Q1, LP38693-Q1 SNVS321O - JANUARY 2005 - REVISED DECEMBER 2015 www.ti.com Functional Block Diagrams (continued) IN P-FET EN ENABLE LOGIC + P-FET MOSFET DRIVER FOLDBACK CURRENT LIMITING OUT SNS THERMAL SHUTDOWN 1.25-V REFERENCE R1 R2 GND Figure 25. LP38693 Functional Diagram (WSON) IN P-FET EN ENABLE LOGIC + P-FET MOSFET DRIVER FOLDBACK CURRENT LIMITING THERMAL SHUTDOWN OUT 1.25-V REFERENCE R1 R2 GND Figure 26. LP38693 Functional Diagram (SOT-223) 12 Submit Documentation Feedback Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LP38691 LP38693 LP38691-Q1 LP38693-Q1 LP38691, LP38693, LP38691-Q1, LP38693-Q1 www.ti.com SNVS321O - JANUARY 2005 - REVISED DECEMBER 2015 8.3 Feature Description 8.3.1 Enable (EN) The LP38693 has an Enable pin (EN) which allows an external control signal to turn the regulator output On and Off. The Enable On/Off threshold has no hysteresis. The voltage signal must rise and fall cleanly, and promptly, through the ON and OFF voltage thresholds. The EN pin voltage must be higher than the VEN(MIN) threshold to ensure that the device is fully enabled under all operating conditions. The EN pin voltage must be lower than the VEN(MAX) threshold to ensure that the device is fully disabled. The EN pin has no internal pullup or pulldown to establish a default condition and, as a result, this pin must be terminated either actively or passively. If the EN pin is driven from a source that actively pulls high and low, the drive voltage must not be allowed to go below ground potential or higher than VIN. If the application does not require the Enable function, the pin must be connected directly to the IN pin. 8.3.2 Thermal Overload Protection (TSD) Thermal Shutdown disables the output when the junction temperature rises to approximately 160C which allows the device to cool. When the junction temperature cools to approximately 150C, the output circuitry enables. Based on power dissipation, thermal resistance, and ambient temperature, the thermal protection circuit may cycle on and off. This thermal cycling limits the dissipation of the regulator and protects it from damage as a result of overheating. The Thermal Shutdown circuitry of the LP38693 has been designed to protect against temporary thermal overload conditions. The Thermal Shutdown circuitry was not intended to replace proper heat-sinking. Continuously running the LP38693 device into thermal shutdown degrades device reliability. 8.3.3 Foldback Current Limiting Foldback current limiting is built into the LP38691 and LP38693 devices which reduces the amount of output current the part can deliver as the output voltage is reduced. The amount of load current is dependent on the differential voltage between the IN and OUT pins. Typically, when this differential voltage exceeds 5 V, the load current limits at about 350 mA. When the VIN - VOUT differential is reduced below 4 V, load current is limited to about 850 mA. CAUTION When toggling the LP38693 Enable (EN) after the input voltage (VIN) is applied, the foldback current limit circuitry is functional the first time that the EN pin is taken high. The foldback current limit circuitry is non-functional the second, and subsequent, times that the EN pin is taken high. Depending on the input and output capacitance values the input inrush current may be higher than expected which can cause the input voltage to droop. If the EN pin is connected to the IN pin, the foldback current limit circuitry is functional when VIN is applied if VIN starts from less than 0.4 V. 8.4 Device Functional Modes 8.4.1 Enable (EN) The EN pin voltage must be higher than the VEN(MIN) threshold to ensure that the device is fully enabled under all operating conditions. 8.4.2 Minimum Operating Input Voltage (VIN) The LP38691 and LP38693 do not include any dedicated UVLO circuitry. Neither device internal circuitry is fully functional until VIN is at least 2.7 V. The output voltage is not regulated until VIN (VOUT + VDO), or 2.7 V, whichever is higher. Copyright (c) 2005-2015, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: LP38691 LP38693 LP38691-Q1 LP38693-Q1 13 LP38691, LP38693, LP38691-Q1, LP38693-Q1 SNVS321O - JANUARY 2005 - REVISED DECEMBER 2015 www.ti.com 9 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI's customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 9.1 Application Information 9.1.1 Reverse Voltage A reverse voltage condition exists when the voltage at the output pin is higher than the voltage at the input pin. Typically this happens when VIN is abruptly taken low and COUT continues to hold a sufficient charge such that the input to output voltage becomes reversed. A less common condition is when an alternate voltage source is connected to the output. There are two possible paths for current to flow from the OUT pin back to IN during a reverse voltage condition. 1. While VIN is high enough to keep the control circuity alive, and the EN pin (LP38693 only) is above the VEN(ON) threshold, the control circuitry attempts to regulate the output voltage. If the input voltage is less than the programmed output voltage, the control circuit drives the gate of the pass element to the full ON condition. In this condition, reverse current flows from the OUT to the IN pin, limited only by the RDS(ON) of the pass element and the output to input voltage differential. Discharging an output capacitor up to 1000 F in this manner does not damage the device as the current rapidly decays. However, continuous reverse current must be avoided. When the EN pin is low, this condition is prevented. 2. The internal PFET pass element has an inherent parasitic diode. During normal operation, the input voltage is higher than the output voltage and the parasitic diode is reverse biased. However, when VIN is below the value where the control circuity is alive, or the EN pin is low (LP38693 only), and the output voltage is more than 500 mV (typical) above the input voltage the parasitic diode becomes forward biased and current flows from the output pin to the input pin through the diode. The current in the parasitic diode must be limited to less than 1-A continuous and 5-A peak. If used in a dual-supply system where the regulator output load is returned to a negative supply, the output pin must be diode-clamped to ground to limit the negative voltage transition. A Schottky diode is recommended for this protective clamp. 9.2 Typical Application VIN VOUT IN ** VEN SNS GND VOUT IN OUT LP38691 1 F * VIN 1 F * 1 F * EN OUT LP38693 ** SNS GND 1 F * * Minimum value required for stability. **WSON package devices only. 14 Submit Documentation Feedback Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LP38691 LP38693 LP38691-Q1 LP38693-Q1 LP38691, LP38693, LP38691-Q1, LP38693-Q1 www.ti.com SNVS321O - JANUARY 2005 - REVISED DECEMBER 2015 9.2.1 Design Requirements Table 1. Design Parameters DESIGN PARAMETERS EXAMPLE VALUE Input voltage range 2.7 V to 10 V Output range 1.8 V Output current 1A Output capacitor range 1 F Input and output capacitor ESR range 5 m to 500 m 9.2.2 Detailed Design Procedure 9.2.2.1 Power Dissipation and Device Operation The permissible power dissipation for any package is a measure of the capability of the device to pass heat from the power source, the junctions of the IC, to the ultimate heat sink, the ambient environment. Thus, the power dissipation is dependent on the ambient temperature and the thermal resistance across the various interfaces between the die junction and ambient air. The maximum allowable power dissipation for the device in a given package can be calculated using Equation 1: PD-MAX = ((TJ-MAX - TA) / RJA) (1) The actual power being dissipated in the device can be represented by Equation 2: PD = (VIN - VOUT) x IOUT (2) These two equations establish the relationship between the maximum power dissipation allowed due to thermal consideration, the voltage drop across the device, and the continuous current capability of the device. These two equations must be used to determine the optimum operating conditions for the device in the application. In applications where lower power dissipation (PD) and/or excellent package thermal resistance (RJA) is present, the maximum ambient temperature (TA-MAX) may be increased. In applications where high power dissipation and/or poor package thermal resistance is present, the maximum ambient temperature (TA-MAX) may have to be derated. TA-MAX is dependent on the maximum operating junction temperature (TJ-MAX-OP = 125C), the maximum allowable power dissipation in the device package in the application (PD-MAX), and the junction-to ambient thermal resistance of the part/package in the application (RJA), as given by Equation 3: TA-MAX = (TJ-MAX-OP - (RJA x PD-MAX)) (3) Alternately, if TA-MAX can not be derated, the PD value must be reduced. This can be accomplished by reducing VIN in the VIN - VOUT term as long as the minimum VIN is met, or by reducing the IOUT term, or by some combination of the two. 9.2.2.2 External Capacitors In common with most regulators, the LP38691 and LP38693 require an external capacitors for regulator stability. The devices are specifically designed for portable applications requiring minimum board space and smallest components. These capacitors must be correctly selected for good performance. 9.2.2.3 Input Capacitor An input capacitor is required for stability. TI recommends that a 1-F capacitor be connected between the devices' IN pin and GND pin (this capacitance value may be increased without limit). This capacitor must be located a distance of not more than 1 cm from the IN pin and returned to a clean analogue ground. Any good quality ceramic, tantalum, or film capacitor may be used at the input. Copyright (c) 2005-2015, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: LP38691 LP38693 LP38691-Q1 LP38693-Q1 15 LP38691, LP38693, LP38691-Q1, LP38693-Q1 SNVS321O - JANUARY 2005 - REVISED DECEMBER 2015 www.ti.com Important: To ensure stable operation it is essential that good PCB design practices are employed to minimize ground impedance and keep input inductance low. If these conditions cannot be met, or if long leads are used to connect the battery or other power source to the LP38691 or LP38693, then TI recommends that the input capacitor is increased. Also, tantalum capacitors can suffer catastrophic failures due to surge current when connected to a low-impedance source of power (like a battery or a very large capacitor). If a tantalum capacitor is used at the input, it must be ensured by the manufacturer to have a surge current rating sufficient for the application. There are no requirements for the equivalent series resistance (ESR) on the input capacitor, but tolerance and temperature coefficient must be considered when selecting the capacitor to ensure the capacitance remains approximately 1 F over the entire operating temperature range. 9.2.2.4 Output Capacitor The LP3869x is designed specifically to work with very small ceramic output capacitors. A 1-F ceramic capacitor (temperature types Z5U, Y5V or X7R/X5R) with ESR between 5 m to 500 m, is suitable in the LP3869x application circuit. For this device the output capacitor must be connected between the OUT pin and GND pin. It is also possible to use tantalum or film capacitors at the device output, but these are not as attractive for reasons of size and cost. The output capacitor must meet the requirement for the minimum value of capacitance and also have an ESR value that is within the range 5 m to 500 m for stability. 9.2.2.5 No-Load Stability The LP3869x remains stable and in regulation with no external load. This is an important consideration in some circuits, for example CMOS RAM keep-alive applications. 9.2.2.6 Capacitor Characteristics The LP3869x is designed to work with ceramic capacitors on the output to take advantage of the benefits they offer. For capacitance values in the range of 0.47 F to 4.7 F, ceramic capacitors are the smallest, least expensive and have the lowest ESR values, thus making them best for eliminating high frequency noise. The ESR of a typical 1-F ceramic capacitor is in the range of 20 m to 40 m, which easily meets the ESR requirement for stability for the LP3869x. For both input and output capacitors, careful interpretation of the capacitor specification is required to ensure correct device operation. The capacitor value can change greatly, depending on the operating conditions and capacitor type. In particular, the output capacitor selection must take account of all the capacitor parameters, to ensure that the specification is met within the application. The capacitance can vary with DC bias conditions as well as temperature and frequency of operation. Capacitor values also show some decrease over time due to aging. The capacitor parameters are also dependent on the particular case size, with smaller sizes giving poorer performance figures in general. As an example, Figure 27 shows a typical graph comparing different capacitor case sizes in a Capacitance vs. DC Bias plot. As shown in the graph, increasing the DC Bias condition can result in the capacitance value falling below the minimum value given in the recommended capacitor specifications table (0.7 F in this case). Note that the graph shows the capacitance out of specification for the 0402 case size capacitor at higher bias voltages. It is therefore recommended that the capacitor manufacturers' specifications for the nominal value capacitor are consulted for all conditions, as some capacitor sizes (for example, 0402) may not be suitable in the actual application. 16 Submit Documentation Feedback Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LP38691 LP38693 LP38691-Q1 LP38693-Q1 LP38691, LP38693, LP38691-Q1, LP38693-Q1 SNVS321O - JANUARY 2005 - REVISED DECEMBER 2015 CAP VALUE (% of NOMINAL 1 PF) www.ti.com 0603, 10V, X5R 100% 80% 60% 0402, 6.3V, X5R 40% 20% 0 1.0 2.0 3.0 4.0 5.0 DC BIAS (V) Figure 27. Typical Variation In Capacitance vs DC Bias The value of the ceramic capacitor can vary with temperature. The capacitor type X7R, which operates over a temperature range of -55C to 125C, only varies the capacitance to within 15%. The capacitor type X5R has a similar tolerance over a reduced temperature range of -55C to 85C. Many large value ceramic capacitors, larger than 1 F, are manufactured with Z5U or Y5V temperature characteristics. Their capacitance can drop by more than 50% as the temperature varies from 25C to 85C. Therefore, X7R and X5R types are recommended over Z5U and Y5V in applications where the ambient temperature changes significantly above or below 25C. Tantalum capacitors are less desirable than ceramic for use as output capacitors because they are more costly when comparing equivalent capacitance and voltage ratings in the 0.47-F to 4.7-F range. Another important consideration is that tantalum capacitors have higher ESR values than equivalent size ceramics. This means that while it may be possible to find a tantalum capacitor with an ESR value within the stable range, it would have to be larger in capacitance (which means bigger and more costly) than a ceramic capacitor with the same ESR value. It mustalso be noted that the ESR of a typical tantalum increases about 2:1 as the temperature goes from 25C down to -40C, so some guard band must be allowed. 9.2.2.7 RFI/EMI Susceptibility Radio frequency interference (RFI) and electromagnetic interference (EMI) can degrade any integrated circuit's performance because of the small dimensions of the geometries inside the device. In applications where circuit sources are present which generate signals with significant high frequency energy content (> 1 MHz), care must be taken to ensure that this does not affect the device regulator. If RFI/EMI noise is present on the input side of the regulator (such as applications where the input source comes from the output of a switching regulator), good ceramic bypass capacitors must be used at the input pin of the device. If a load is connected to the device output which switches at high speed (such as a clock), the high-frequency current pulses required by the load must be supplied by the capacitors on the IC output. Because the bandwidth of the regulator loop is less than 100 kHz, the control circuitry cannot respond to load changes above that frequency. This means the effective output impedance of the device at frequencies above 100 kHz is determined only by the output capacitors. In applications where the load is switching at high speed, the output of the IC may need RF isolation from the load. TI recommends that some inductance be placed between the output capacitor and the load, and good RF bypass capacitors be placed directly across the load. PCB layout is also critical in high noise environments, because RFI/EMI is easily radiated directly into PC traces. Noisy circuitry must be isolated from clean circuits where possible, and grounded through a separate path. At MHz frequencies, ground planes begin to look inductive and RFI/ EMI can cause ground bounce across the ground plane. In multi-layer PCB applications, care must be taken in layout so that noisy power and ground planes do not radiate directly into adjacent layers which carry analog power and ground. Copyright (c) 2005-2015, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: LP38691 LP38693 LP38691-Q1 LP38693-Q1 17 LP38691, LP38693, LP38691-Q1, LP38693-Q1 SNVS321O - JANUARY 2005 - REVISED DECEMBER 2015 www.ti.com 9.2.2.8 Output Noise Noise is specified in two ways: Spot Noise or Output Noise Density is the RMS sum of all noise sources, measured at the regulator output, at a specific frequency (measured with a 1-Hz bandwidth). This type of noise is usually plotted on a curve as a function of frequency. Total Output Noise or Broad-Band Noise is the RMS sum of spot noise over a specified bandwidth, usually several decades of frequencies. Attention paid to the units of measurement. Spot noise is measured in units VHz or nVHz, and total output noise is measured in VRMS. The primary source of noise in low-dropout regulators is the internal reference. Noise can be reduced in two ways: by increasing the transistor area or by increasing the current drawn by the internal reference. Increasing the area decreases the chance of fitting the die into a smaller package. Increasing the current drawn by the internal reference increases the total supply current (GND pin current). 9.2.3 Application Curves Figure 28. VOUT vs VEN, ON (LP38693 Only) 18 Submit Documentation Feedback Figure 29. VOUT vs VEN, OFF (LP38693 Only) Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LP38691 LP38693 LP38691-Q1 LP38693-Q1 LP38691, LP38693, LP38691-Q1, LP38693-Q1 www.ti.com SNVS321O - JANUARY 2005 - REVISED DECEMBER 2015 10 Power Supply Recommendations The LP38691 and LP38693 are designed to operate from an input supply voltage range of 2.7 V to 10 V. The input supply must be well regulated and free of spurious noise. To ensure that the device output voltage is well regulated, input supply must be at least VOUT + 0.5 V, or 2.7 V, whichever is higher. A minimum capacitor value of 1-F is required to be within 1 cm of the IN pin. 11 Layout 11.1 Layout Guidelines The dynamic performance of the LP38691 or LP38693 is dependent on the layout of the PCB. PCB layout practices that are adequate for typical LDOs may degrade the load regulation, PSRR, noise, or transient performance of the LP38691 or LP38693. Best performance is achieved by placing CIN and COUT on the same side of the PCB as the LP38691 or LP38693, and as close to the package as is practical. The ground connections for CIN and COUT must be back to the LP38691 or LP38693 GND pin using as wide, and as short, a copper trace as is practical. Connections using long trace lengths, narrow trace widths, or connections through vias must be avoided. These add parasitic inductances and resistance that result in inferior performance especially during transient conditions. A Ground Plane, either on the opposite side of a two-layer PCB, or embedded in a multi-layer PCB, is strongly recommended. This Ground Plane serves two purposes: * Provides a circuit reference plane to assure accuracy. * Provides a thermal plane to remove heat from the LP38691 or LP38693 WSON package through thermal vias under the package DAP. 11.2 Layout Example LP38691DT COUT LP38691SD VIN Power Ground VOUT CIN GND OUT IN 1 Power Ground 2 N/C 3 Thermal Pad 6 IN 5 SNS 4 OUT IN VIN COUT CIN Figure 30. TO-252 Package Figure 31. WSON LP38691 Layout space space Copyright (c) 2005-2015, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: LP38691 LP38693 LP38691-Q1 LP38693-Q1 19 LP38691, LP38693, LP38691-Q1, LP38693-Q1 SNVS321O - JANUARY 2005 - REVISED DECEMBER 2015 www.ti.com Layout Example (continued) LP38693SD LP38693MP EN COUT CIN NC GND OUT VOUT IN VIN Power Ground IN 1 Power Ground 2 Thermal Pad EN 3 6 IN 5 SNS 4 OUT CIN COUT Figure 32. SOT-223 Layout Figure 33. WSON LP38693 Layout 11.3 WSON Mounting The NGG0006A (No Pullback) 6-Lead WSON package requires specific mounting techniques which are detailed in the TI AN-1187 Application Report SNOA401. Referring to the section PCB Design Recommendations, note that the pad style which must be used with the WSON package is the NSMD (non-solder mask defined) type. Additionally, TI recommends the PCB terminal pads to be 0.2 mm longer than the package pads to create a solder fillet to improve reliability and inspection. The input current is split between two IN pins, 1 and 6. The two IN pins must be connected together to ensure that the device can meet all specifications at the rated current. The thermal dissipation of the WSON package is directly related to the printed circuit board construction and the amount of additional copper area connected to the DAP. The DAP (exposed pad) on the bottom of the WSON package is connected to the die substrate with a conductive die attach adhesive. The DAP has no direct electrical (wire) connection to any of the pins. There is a parasitic PN junction between the die substrate and the device ground. As such, it is strongly recommend that the DAP be connected directly to the ground at device lead 2 (that is, GND). Alternately, but not recommended, the DAP may be left floating (that is, no electrical connection). The DAP must not be connected to any potential other than ground. 20 Submit Documentation Feedback Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LP38691 LP38693 LP38691-Q1 LP38693-Q1 LP38691, LP38693, LP38691-Q1, LP38693-Q1 www.ti.com SNVS321O - JANUARY 2005 - REVISED DECEMBER 2015 12 Device and Documentation Support 12.1 Documentation Support 12.1.1 Related Documentation For related documentation see the following: Texas Instruments AN-1187 Leadless Leadframe Package (LLP) (SNOA401). 12.2 Related Links The table below lists quick access links. Categories include technical documents, support and community resources, tools and software, and quick access to sample or buy. Table 2. Related Links PARTS PRODUCT FOLDER SAMPLE & BUY TECHNICAL DOCUMENTS TOOLS & SOFTWARE SUPPORT & COMMUNITY LP38691 Click here Click here Click here Click here Click here LP38693 Click here Click here Click here Click here Click here LP38691-Q1 Click here Click here Click here Click here Click here LP38693-Q1 Click here Click here Click here Click here Click here 12.3 Community Resources The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use. TI E2ETM Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help solve problems with fellow engineers. Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and contact information for technical support. 12.4 Trademarks E2E is a trademark of Texas Instruments. All other trademarks are the property of their respective owners. 12.5 Electrostatic Discharge Caution These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. 12.6 Glossary SLYZ022 -- TI Glossary. This glossary lists and explains terms, acronyms, and definitions. 13 Mechanical, Packaging, and Orderable Information The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation. Copyright (c) 2005-2015, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: LP38691 LP38693 LP38691-Q1 LP38693-Q1 21 PACKAGE OPTION ADDENDUM www.ti.com 29-Apr-2020 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan Lead/Ball Finish MSL Peak Temp (2) (6) (3) Op Temp (C) Device Marking (4/5) LP38691DT-1.8 NRND TO-252 NDP 3 75 TBD Call TI Call TI -40 to 125 LP38691 DT-1.8 LP38691DT-1.8/NOPB ACTIVE TO-252 NDP 3 75 Green (RoHS & no Sb/Br) SN Level-2-260C-1 YEAR -40 to 125 LP38691 DT-1.8 LP38691DT-2.5/NOPB ACTIVE TO-252 NDP 3 75 Green (RoHS & no Sb/Br) SN Level-2-260C-1 YEAR -40 to 125 LP38691 DT-2.5 LP38691DT-3.3 NRND TO-252 NDP 3 75 TBD Call TI Call TI -40 to 125 LP38691 DT-3.3 LP38691DT-3.3/NOPB ACTIVE TO-252 NDP 3 75 Green (RoHS & no Sb/Br) SN Level-2-260C-1 YEAR -40 to 125 LP38691 DT-3.3 LP38691DT-5.0/NOPB ACTIVE TO-252 NDP 3 75 Green (RoHS & no Sb/Br) SN Level-2-260C-1 YEAR -40 to 125 LP38691 DT-5.0 LP38691DTX-1.8/NOPB ACTIVE TO-252 NDP 3 2500 Green (RoHS & no Sb/Br) SN Level-2-260C-1 YEAR -40 to 125 LP38691 DT-1.8 LP38691DTX-2.5/NOPB ACTIVE TO-252 NDP 3 2500 Green (RoHS & no Sb/Br) SN Level-2-260C-1 YEAR -40 to 125 LP38691 DT-2.5 LP38691DTX-3.3/NOPB ACTIVE TO-252 NDP 3 2500 Green (RoHS & no Sb/Br) SN Level-2-260C-1 YEAR -40 to 125 LP38691 DT-3.3 LP38691DTX-5.0/NOPB ACTIVE TO-252 NDP 3 2500 Green (RoHS & no Sb/Br) SN Level-2-260C-1 YEAR -40 to 125 LP38691 DT-5.0 LP38691QSD-1.8/NOPB ACTIVE WSON NGG 6 1000 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 L256B LP38691QSD-2.5/NOPB ACTIVE WSON NGG 6 1000 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 L257B LP38691QSD-3.3/NOPB ACTIVE WSON NGG 6 1000 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 L258B LP38691QSD-5.0/NOPB ACTIVE WSON NGG 6 1000 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 L259B LP38691QSDX-1.8/NOPB ACTIVE WSON NGG 6 4500 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 L256B LP38691QSDX-2.5/NOPB ACTIVE WSON NGG 6 4500 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 L257B LP38691QSDX-3.3/NOPB ACTIVE WSON NGG 6 4500 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 L258B Addendum-Page 1 Samples PACKAGE OPTION ADDENDUM www.ti.com Orderable Device 29-Apr-2020 Status (1) Package Type Package Pins Package Drawing Qty Eco Plan Lead/Ball Finish MSL Peak Temp (2) (6) (3) Op Temp (C) Device Marking (4/5) LP38691QSDX-5.0/NOPB ACTIVE WSON NGG 6 4500 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 L259B LP38691SD-1.8/NOPB ACTIVE WSON NGG 6 1000 Green (RoHS & no Sb/Br) NIPDAU | SN Level-1-260C-UNLIM -40 to 125 L118B LP38691SD-2.5/NOPB ACTIVE WSON NGG 6 1000 Green (RoHS & no Sb/Br) NIPDAU | SN Level-1-260C-UNLIM -40 to 125 L119B LP38691SD-3.3/NOPB ACTIVE WSON NGG 6 1000 Green (RoHS & no Sb/Br) NIPDAU | SN Level-1-260C-UNLIM -40 to 125 L120B LP38691SD-5.0/NOPB ACTIVE WSON NGG 6 1000 Green (RoHS & no Sb/Br) NIPDAU | SN Level-1-260C-UNLIM -40 to 125 L121B LP38691SDX-1.8/NOPB ACTIVE WSON NGG 6 4500 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 L118B LP38691SDX-3.3/NOPB ACTIVE WSON NGG 6 4500 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 L120B LP38691SDX-5.0/NOPB ACTIVE WSON NGG 6 4500 Green (RoHS & no Sb/Br) NIPDAU | SN Level-1-260C-UNLIM -40 to 125 L121B LP38693MP-1.8/NOPB ACTIVE SOT-223 NDC 5 1000 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 LJVB LP38693MP-2.5/NOPB ACTIVE SOT-223 NDC 5 1000 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 LJXB LP38693MP-3.3 NRND SOT-223 NDC 5 1000 TBD Call TI Call TI -40 to 125 LJYB LP38693MP-3.3/NOPB ACTIVE SOT-223 NDC 5 1000 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 LJYB LP38693MP-5.0/NOPB ACTIVE SOT-223 NDC 5 1000 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 LJZB LP38693MPX-1.8/NOPB ACTIVE SOT-223 NDC 5 2000 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 LJVB LP38693MPX-2.5/NOPB ACTIVE SOT-223 NDC 5 2000 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 LJXB LP38693MPX-3.3/NOPB ACTIVE SOT-223 NDC 5 2000 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 LJYB LP38693MPX-5.0/NOPB ACTIVE SOT-223 NDC 5 2000 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 LJZB LP38693QSD-1.8/NOPB ACTIVE WSON NGG 6 1000 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 L260B Addendum-Page 2 Samples PACKAGE OPTION ADDENDUM www.ti.com Orderable Device 29-Apr-2020 Status (1) Package Type Package Pins Package Drawing Qty Eco Plan Lead/Ball Finish MSL Peak Temp (2) (6) (3) Op Temp (C) Device Marking (4/5) LP38693QSD-2.5/NOPB ACTIVE WSON NGG 6 1000 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 L261B LP38693QSD-3.3/NOPB ACTIVE WSON NGG 6 1000 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 L262B LP38693QSD-5.0/NOPB ACTIVE WSON NGG 6 1000 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 L263B LP38693QSDX-1.8/NOPB ACTIVE WSON NGG 6 4500 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 L260B LP38693QSDX-2.5/NOPB ACTIVE WSON NGG 6 4500 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 L261B LP38693QSDX-3.3/NOPB ACTIVE WSON NGG 6 4500 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 L262B LP38693QSDX-5.0/NOPB ACTIVE WSON NGG 6 4500 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 L263B LP38693SD-1.8 NRND WSON NGG 6 1000 TBD Call TI Call TI -40 to 125 L128B LP38693SD-1.8/NOPB ACTIVE WSON NGG 6 1000 Green (RoHS & no Sb/Br) NIPDAU | SN Level-1-260C-UNLIM -40 to 125 L128B LP38693SD-2.5/NOPB ACTIVE WSON NGG 6 1000 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 L129B LP38693SD-3.3 NRND WSON NGG 6 1000 TBD Call TI Call TI -40 to 125 L130B LP38693SD-3.3/NOPB ACTIVE WSON NGG 6 1000 Green (RoHS & no Sb/Br) NIPDAU | SN Level-1-260C-UNLIM -40 to 125 L130B LP38693SD-5.0/NOPB ACTIVE WSON NGG 6 1000 Green (RoHS & no Sb/Br) NIPDAU | SN Level-1-260C-UNLIM -40 to 125 L131B LP38693SDX-3.3/NOPB ACTIVE WSON NGG 6 4500 Green (RoHS & no Sb/Br) NIPDAU | SN Level-1-260C-UNLIM -40 to 125 L130B LP38693SDX-5.0/NOPB ACTIVE WSON NGG 6 4500 Green (RoHS & no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 L131B (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. Addendum-Page 3 Samples PACKAGE OPTION ADDENDUM www.ti.com 29-Apr-2020 (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based flame retardants must also meet the <=1000ppm threshold requirement. (3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. (6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish value exceeds the maximum column width. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. OTHER QUALIFIED VERSIONS OF LP38691, LP38691-Q1, LP38693, LP38693-Q1 : * Catalog: LP38691, LP38693 * Automotive: LP38691-Q1, LP38693-Q1 NOTE: Qualified Version Definitions: * Catalog - TI's standard catalog product * Automotive - Q100 devices qualified for high-reliability automotive applications targeting zero defects Addendum-Page 4 PACKAGE MATERIALS INFORMATION www.ti.com 4-Jun-2020 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant LP38691DTX-1.8/NOPB TO-252 NDP 3 2500 330.0 16.4 6.9 10.5 2.7 8.0 16.0 Q2 LP38691DTX-2.5/NOPB TO-252 NDP 3 2500 330.0 16.4 6.9 10.5 2.7 8.0 16.0 Q2 LP38691DTX-3.3/NOPB TO-252 NDP 3 2500 330.0 16.4 6.9 10.5 2.7 8.0 16.0 Q2 LP38691DTX-5.0/NOPB TO-252 NDP 3 2500 330.0 16.4 6.9 10.5 2.7 8.0 16.0 Q2 LP38691QSD-1.8/NOPB WSON NGG 6 1000 178.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38691QSD-2.5/NOPB WSON NGG 6 1000 178.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38691QSD-3.3/NOPB WSON NGG 6 1000 178.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38691QSD-5.0/NOPB WSON NGG 6 1000 178.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38691QSDX-1.8/NOPB WSON NGG 6 4500 330.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38691QSDX-2.5/NOPB WSON NGG 6 4500 330.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38691QSDX-3.3/NOPB WSON NGG 6 4500 330.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38691QSDX-5.0/NOPB WSON NGG 6 4500 330.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38691SD-1.8/NOPB WSON NGG 6 1000 180.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38691SD-2.5/NOPB WSON NGG 6 1000 180.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38691SD-3.3/NOPB WSON NGG 6 1000 180.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38691SD-5.0/NOPB WSON NGG 6 1000 180.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38691SDX-1.8/NOPB WSON NGG 6 4500 330.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38691SDX-3.3/NOPB WSON NGG 6 4500 330.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 Pack Materials-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 4-Jun-2020 Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant LP38691SDX-5.0/NOPB WSON NGG 6 4500 330.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38693MP-1.8/NOPB SOT-223 NDC 5 1000 330.0 16.4 7.0 7.5 2.2 12.0 16.0 Q3 LP38693MP-2.5/NOPB SOT-223 NDC 5 1000 330.0 16.4 7.0 7.5 2.2 12.0 16.0 Q3 LP38693MP-3.3 SOT-223 NDC 5 1000 330.0 16.4 7.0 7.5 2.2 12.0 16.0 Q3 LP38693MP-3.3/NOPB SOT-223 NDC 5 1000 330.0 16.4 7.0 7.5 2.2 12.0 16.0 Q3 LP38693MP-5.0/NOPB SOT-223 NDC 5 1000 330.0 16.4 7.0 7.5 2.2 12.0 16.0 Q3 LP38693MPX-1.8/NOPB SOT-223 NDC 5 2000 330.0 16.4 7.0 7.5 2.2 12.0 16.0 Q3 LP38693MPX-2.5/NOPB SOT-223 NDC 5 2000 330.0 16.4 7.0 7.5 2.2 12.0 16.0 Q3 LP38693MPX-3.3/NOPB SOT-223 NDC 5 2000 330.0 16.4 7.0 7.5 2.2 12.0 16.0 Q3 LP38693MPX-5.0/NOPB SOT-223 NDC 5 2000 330.0 16.4 7.0 7.5 2.2 12.0 16.0 Q3 LP38693QSD-1.8/NOPB WSON NGG 6 1000 178.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38693QSD-2.5/NOPB WSON NGG 6 1000 178.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38693QSD-3.3/NOPB WSON NGG 6 1000 178.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38693QSD-5.0/NOPB WSON NGG 6 1000 178.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38693QSDX-1.8/NOPB WSON NGG 6 4500 330.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38693QSDX-2.5/NOPB WSON NGG 6 4500 330.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38693QSDX-3.3/NOPB WSON NGG 6 4500 330.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38693QSDX-5.0/NOPB WSON NGG 6 4500 330.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38693SD-1.8 WSON NGG 6 1000 178.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38693SD-1.8/NOPB WSON NGG 6 1000 180.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38693SD-2.5/NOPB WSON NGG 6 1000 178.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38693SD-3.3 WSON NGG 6 1000 178.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38693SD-3.3/NOPB WSON NGG 6 1000 180.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38693SD-5.0/NOPB WSON NGG 6 1000 180.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38693SDX-3.3/NOPB WSON NGG 6 4500 330.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LP38693SDX-5.0/NOPB WSON NGG 6 4500 330.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 Pack Materials-Page 2 PACKAGE MATERIALS INFORMATION www.ti.com 4-Jun-2020 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LP38691DTX-1.8/NOPB TO-252 NDP 3 2500 367.0 367.0 38.0 LP38691DTX-2.5/NOPB TO-252 NDP 3 2500 367.0 367.0 38.0 LP38691DTX-3.3/NOPB TO-252 NDP 3 2500 367.0 367.0 38.0 LP38691DTX-5.0/NOPB TO-252 NDP 3 2500 367.0 367.0 38.0 LP38691QSD-1.8/NOPB WSON NGG 6 1000 210.0 185.0 35.0 LP38691QSD-2.5/NOPB WSON NGG 6 1000 210.0 185.0 35.0 LP38691QSD-3.3/NOPB WSON NGG 6 1000 210.0 185.0 35.0 LP38691QSD-5.0/NOPB WSON NGG 6 1000 210.0 185.0 35.0 LP38691QSDX-1.8/NOPB WSON NGG 6 4500 367.0 367.0 35.0 LP38691QSDX-2.5/NOPB WSON NGG 6 4500 367.0 367.0 35.0 LP38691QSDX-3.3/NOPB WSON NGG 6 4500 367.0 367.0 35.0 LP38691QSDX-5.0/NOPB WSON NGG 6 4500 367.0 367.0 35.0 LP38691SD-1.8/NOPB WSON NGG 6 1000 203.0 203.0 35.0 LP38691SD-2.5/NOPB WSON NGG 6 1000 203.0 203.0 35.0 LP38691SD-3.3/NOPB WSON NGG 6 1000 203.0 203.0 35.0 LP38691SD-5.0/NOPB WSON NGG 6 1000 203.0 203.0 35.0 LP38691SDX-1.8/NOPB WSON NGG 6 4500 367.0 367.0 35.0 LP38691SDX-3.3/NOPB WSON NGG 6 4500 367.0 367.0 35.0 LP38691SDX-5.0/NOPB WSON NGG 6 4500 346.0 346.0 35.0 LP38693MP-1.8/NOPB SOT-223 NDC 5 1000 367.0 367.0 35.0 Pack Materials-Page 3 PACKAGE MATERIALS INFORMATION www.ti.com 4-Jun-2020 Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LP38693MP-2.5/NOPB SOT-223 NDC 5 1000 367.0 367.0 35.0 LP38693MP-3.3 SOT-223 NDC 5 1000 367.0 367.0 35.0 LP38693MP-3.3/NOPB SOT-223 NDC 5 1000 367.0 367.0 35.0 LP38693MP-5.0/NOPB SOT-223 NDC 5 1000 367.0 367.0 35.0 LP38693MPX-1.8/NOPB SOT-223 NDC 5 2000 367.0 367.0 35.0 LP38693MPX-2.5/NOPB SOT-223 NDC 5 2000 367.0 367.0 35.0 LP38693MPX-3.3/NOPB SOT-223 NDC 5 2000 367.0 367.0 35.0 LP38693MPX-5.0/NOPB SOT-223 NDC 5 2000 367.0 367.0 35.0 LP38693QSD-1.8/NOPB WSON NGG 6 1000 210.0 185.0 35.0 LP38693QSD-2.5/NOPB WSON NGG 6 1000 210.0 185.0 35.0 LP38693QSD-3.3/NOPB WSON NGG 6 1000 210.0 185.0 35.0 LP38693QSD-5.0/NOPB WSON NGG 6 1000 210.0 185.0 35.0 LP38693QSDX-1.8/NOPB WSON NGG 6 4500 367.0 367.0 35.0 LP38693QSDX-2.5/NOPB WSON NGG 6 4500 367.0 367.0 35.0 LP38693QSDX-3.3/NOPB WSON NGG 6 4500 367.0 367.0 35.0 LP38693QSDX-5.0/NOPB WSON NGG 6 4500 367.0 367.0 35.0 LP38693SD-1.8 WSON NGG 6 1000 210.0 185.0 35.0 LP38693SD-1.8/NOPB WSON NGG 6 1000 203.0 203.0 35.0 LP38693SD-2.5/NOPB WSON NGG 6 1000 210.0 185.0 35.0 LP38693SD-3.3 WSON NGG 6 1000 210.0 185.0 35.0 LP38693SD-3.3/NOPB WSON NGG 6 1000 203.0 203.0 35.0 LP38693SD-5.0/NOPB WSON NGG 6 1000 203.0 203.0 35.0 LP38693SDX-3.3/NOPB WSON NGG 6 4500 346.0 346.0 35.0 LP38693SDX-5.0/NOPB WSON NGG 6 4500 367.0 367.0 35.0 Pack Materials-Page 4 MECHANICAL DATA NDC0005A www.ti.com PACKAGE OUTLINE NDP0003B TO-252 - 2.55 mm max height SCALE 1.500 TRANSISTOR OUTLINE 10.42 9.40 6.22 5.97 B 1.27 0.88 A 5.46 4.96 6.73 6.35 (2.345) 1 (2.5) 2.285 2 4.57 3 0.88 3X 0.64 0.25 C A B 1.02 0.64 PKG OPTIONAL 8 TOP & BOTTOM 8 1.14 0.89 C 2.55 MAX SEATING PLANE 0.17 0.88 0.46 0.60 0.46 0.51 MIN 4.32 MIN 3 2 4 1 4219870/A 03/2018 NOTES: 1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing per ASME Y14.5M. 2. This drawing is subject to change without notice. 3. Reference JEDEC registration TO-252. www.ti.com EXAMPLE BOARD LAYOUT NDP0003B TO-252 - 2.55 mm max height TRANSISTOR OUTLINE SEE SOLDER MASK DETAIL 2X (2.15) (5.7) 2X (1.3) 1 4 (4.57) SYMM (5.5) 3 (R0.05) TYP (4.38) (2.285) PKG LAND PATTERN EXAMPLE EXPOSED METAL SHOWN SCALE: 8X 0.07 MAX ALL AROUND 0.07 MIN ALL AROUND METAL EDGE METAL UNDER SOLDER MASK EXPOSED METAL EXPOSED METAL SOLDER MASK OPENING NON SOLDER MASK DEFINED (PREFERRED) SOLDER MASK OPENING SOLDER MASK DEFINED SOLDER MASK DETAIL 4219870/A 03/2018 NOTES: (continued) 4. This package is designed to be soldered to a thermal pad on the board. For more information, see Texas Instruments literature numbers SLMA002(www.ti.com/lit/slm002) and SLMA004 (www.ti.com/lit/slma004). 5. Vias are optional depending on application, refer to device data sheet. It is recommended that vias under paste be filled, plugged or tented. www.ti.com EXAMPLE STENCIL DESIGN NDP0003B TO-252 - 2.55 mm max height TRANSISTOR OUTLINE (1.35) TYP 2X (2.15) 2X (1.3) (0.26) (R0.05) TYP (1.32) TYP (4.57) 16X (1.12) 16X (1.15) (4.38) PKG SOLDER PASTE EXAMPLE BASED ON 0.125 MM THICK STENCIL SCALE: 8X 4219870/A 03/2018 NOTES: (continued) 6. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate design recommendations. 7. Board assembly site may have different recommendations for stencil design. www.ti.com MECHANICAL DATA NGG0006A SDE06A (Rev A) www.ti.com IMPORTANT NOTICE AND DISCLAIMER TI PROVIDES TECHNICAL AND RELIABILITY DATA (INCLUDING DATASHEETS), DESIGN RESOURCES (INCLUDING REFERENCE DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND OTHER RESOURCES "AS IS" AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS AND IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS. These resources are intended for skilled developers designing with TI products. You are solely responsible for (1) selecting the appropriate TI products for your application, (2) designing, validating and testing your application, and (3) ensuring your application meets applicable standards, and any other safety, security, or other requirements. These resources are subject to change without notice. TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource. Other reproduction and display of these resources is prohibited. No license is granted to any other TI intellectual property right or to any third party intellectual property right. TI disclaims responsibility for, and you will fully indemnify TI and its representatives against, any claims, damages, costs, losses, and liabilities arising out of your use of these resources. TI's products are provided subject to TI's Terms of Sale (www.ti.com/legal/termsofsale.html) or other applicable terms available either on ti.com or provided in conjunction with such TI products. TI's provision of these resources does not expand or otherwise alter TI's applicable warranties or warranty disclaimers for TI products. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright (c) 2020, Texas Instruments Incorporated