FEATURES TYPICAL APPLICATION CIRCUITS APPLICATIONS EP VIN = -3.8V CIN 4.7F VIN ADP7183 +1.25V OFF 0V VOUT SENSE VA EN -1.3V ON VAFB VREG VOUT = -3.3V COUT 4.7F CAFB 10nF CA 1F GND CREG 1F 12897-001 Input voltage range: -2.0 V to -5.5 V Maximum output current: -300 mA Fixed output voltage options: -0.5 V to -4.5 V Adjustable output from -0.5 V to -VIN + 0.5 V Low output noise: 4 V rms from 100 Hz to 100 kHz Noise spectral density: 20 nV/Hz, 10 kHz to 1 MHz Power supply rejection ratio (PSRR) at -300 mA load 75 dB typical at 10 kHz 62 dB typical at 100 kHz 40 dB typical at 1 MHz Low dropout voltage: -130 mV typical at IOUT = -300 mA Initial output voltage accuracy (VOUT): 0.5% at IOUT = -10 mA Output voltage accuracy over line, load, and temperature: 2.6% Operating supply current (IGND): -0.6 mA typical at no load Low shutdown current: -2 A typical at VIN = -5.5 V Stable with small 4.7 F ceramic input and output capacitor Positive or negative enable logic Current-limit and thermal overload protection 8-lead, 2 mm x 2 mm LFCSP package Supported by ADIsimPOWER voltage regulator design tool Figure 1. ADP7183 with Fixed Output Voltage, VOUT = -3.3 V EP VIN = -3V CIN 4.7F SENSE ADP7183 +1.25V OFF 0V VOUT VIN VA EN -1.3V ON VAFB VREG GND COUT 4.7F R1 100k VOUT = -2.5V CAFB 10nF CA 1F R2 24.9k CREG 1F 12897-002 Data Sheet -300 mA, Ultralow Noise, High PSRR, Low Dropout Linear Regulator ADP7183 Figure 2. ADP7183 with Adjustable Output Voltage, VOUT = -2.5 V Regulation to noise sensitive applications: analog-to-digital converters (ADCs), digital-to-analog converters (DACs), precision amplifiers Communications and infrastructure Medical and healthcare Industrial and instrumentation GENERAL DESCRIPTION The ADP7183 is a complementary metal oxide semiconductor (CMOS), low dropout (LDO) linear regulator that operates from -2.0 V to -5.5 V and provides up to -300 mA of output current. This LDO regulator is ideal for regulation of high performance analog and mixed-signal circuits operating from -0.5 V down to -4.5 V. Using an advanced proprietary architecture, the ADP7183 provides high PSRR and low noise, and it achieves excellent line and load transient response with a small 4.7 F ceramic output capacitor. The ADP7183 is available in 15 fixed output voltage options. The following voltages are available from stock: -0.5 V, -1.0 V, -1.2 V, -1.5 V, -1.8 V, -2.0 V, -2.5 V, -3.0 V, and -3.3 V. Rev. B Additional voltages available by special order are -0.8 V, -0.9 V, -1.3 V, -2.8 V, -4.2 V, and -4.5 V. An adjustable version is also available that allows output voltages that range from -0.5 V to -VIN + 0.5 V with an external feedback divider. The enable logic feature is capable of interfacing with positive or negative logic levels for maximum flexibility. The ADP7183 regulator output noise is 4 V rms independent of the output voltage. The ADP7183 is available in an 8-lead, 2 mm x 2 mm LFCSP, making it not only a very compact solution but also providing excellent thermal performance for applications requiring up to -300 mA of output current in a small, low profile footprint. Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 (c)2016-2017 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com ADP7183* PRODUCT PAGE QUICK LINKS Last Content Update: 10/03/2017 COMPARABLE PARTS DESIGN RESOURCES View a parametric search of comparable parts. * ADP7183 Material Declaration * PCN-PDN Information EVALUATION KITS * Quality And Reliability * ADP7183/ADP7185 Evaluation Board * Symbols and Footprints DOCUMENTATION DISCUSSIONS Data Sheet View all ADP7183 EngineerZone Discussions. * ADP7183: -300 mA, Ultralow Noise, High PSRR, Low Dropout Linear Regulator Data Sheet SAMPLE AND BUY User Guides Visit the product page to see pricing options. * UG-795: Evaluating the ADP7183 and ADP7185 Ultralow Noise, High PSRR, Low Dropout Linear Regulators TOOLS AND SIMULATIONS TECHNICAL SUPPORT Submit a technical question or find your regional support number. * ADI Linear Regulator Design Tool and Parametric Search * ADIsimPowerTM Voltage Regulator Design Tool DOCUMENT FEEDBACK Submit feedback for this data sheet. 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ADP7183 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Theory of Operation ...................................................................... 13 Applications ....................................................................................... 1 Adjustable Mode Operation ..................................................... 13 Typical Application Circuits............................................................ 1 Enable Pin Operation ................................................................ 13 General Description ......................................................................... 1 Start-Up Time ............................................................................. 14 Revision History ............................................................................... 2 Applications Information .............................................................. 15 Specifications..................................................................................... 3 ADIsimPower Design Tool ....................................................... 15 Input and Output Capacitor Recommended Specifications ... 4 Capacitor Selection .................................................................... 15 Absolute Maximum Ratings ............................................................ 5 Undervoltage Lockout (UVLO) ............................................... 16 Thermal Data ................................................................................ 5 Current-Limit and Thermal Overload Protection ................. 16 Thermal Resistance ...................................................................... 5 Thermal Considerations............................................................ 17 ESD Caution .................................................................................. 5 PCB Layout Considerations ...................................................... 18 Pin Configuration and Function Descriptions ............................. 6 Outline Dimensions ....................................................................... 19 Typical Performance Characteristics ............................................. 7 Ordering Guide .......................................................................... 19 REVISION HISTORY 5/2017--Rev. A to Rev. B Change to Low Noise Reference Voltage Parameter, Table 1...... 3 Changes to Figure 31 to Figure 33 ................................................ 11 Changes to Input and Output Capacitor Properties Section and Figure 49 .......................................................................................... 16 2/2017--Rev. 0 to Rev. A Changes to Specifications Section .................................................. 3 Change to Output Accuracy Voltage Parameter, Table 1 ............ 3 Changes to Ordering Guide .......................................................... 19 10/2016--Revision 0: Initial Version Rev. B | Page 2 of 19 Data Sheet ADP7183 SPECIFICATIONS VIN = (VOUT - 0.5 V) or -2 V (whichever is more negative), EN = VIN, IOUT = -10 mA, CIN = COUT = 4.7 F, CAFB = 10 nF, CA = CREG = 1 F, TA = 25C for typical specifications, TJ = -40C to +125C for minimum/maximum specifications, unless otherwise noted. Table 1. Parameter INPUT VOLTAGE RANGE OPERATING SUPPLY CURRENT Symbol VIN IGND SHUTDOWN CURRENT OUTPUT NOISE 1 IGND-SD OUTNOISE NOISE SPECTRAL DENSITY1 OUTNSD POWER SUPPLY REJECTION RATIO1 PSRR OUTPUT VOLTAGE Output Voltage Accuracy VOUT OUTPUT VOLTAGE REFERENCE FEEDBACK VAFB Accuracy REGULATION Line Load 2 INPUT BIAS CURRENT SENSE VAFB VAFB IOUT = -10 mA, TA = 25C -1 mA < IOUT < -300 mA, VIN = (VOUT - 0.5 V) to -5.5 V Adjustable model voltage reference Adjustable model, VIN = -2 V, IOUT = -10 mA VIN = (VOUT - 0.5 V) to -5.5 V IOUT = -1 mA to -300 mA SENSEI-BIAS -1 mA < IOUT < -300 mA, VIN = (VOUT - 0.5 V) to -5.5 V -1 mA < IOUT < -300 mA, VIN = (VOUT - 0.5 V) to -5.5 V IOUT = -100 mA IOUT = -300 mA VEN = 0 V VOUT = -1 V VREG = -1 V VA = -1 V VOUT = -4.5 V, CAFB = 1 nF, CA = 1 F VOUT = -4.5 V, CAFB = 10 nF, CA = 1 F VOUT = -1.2 V, CAFB = 1 nF, CA = 1 F VOUT = -1.2 V, CAFB = 10 nF, CA = 1 F VOUT = -0.5 V, no CAFB, CA = 1 F VAFB-BIAS VDROPOUT PULL-DOWN RESISTANCE Output Voltage Regulated Input Supply Voltage Low Noise Reference Voltage START-UP TIME 4 VOUT-PULL VREG-PULL VA-PULL tSTART-UP ILIMIT TSSD TSSD-HYS Min -2.0 IOUT = 0 A IOUT = -300 mA EN = GND, VIN = -5.5 V 10 Hz to 100 kHz, CAFB = 1 nF 10 Hz to 100 kHz, CAFB = 10 nF 100 Hz to 100 kHz, CAFB = 1 nF 100 Hz to 100 kHz, CAFB = 10 nF 100 Hz, CAFB = 1 nF 100 Hz, CAFB = 10 nF 10 kHz to 1 MHz, CAFB = 1 nF to 1 F IOUT = -300 mA, VOUT = -3.3 V, VIN = -3.8 V At 1 kHz At 10 kHz At 100 kHz At 1 MHz VOUT/VIN VOUT/IOUT DROPOUT VOLTAGE 3 CURRENT-LIMIT THRESHOLD 5 THERMAL SHUTDOWN Threshold Hysteresis Test Conditions/Comments -0.6 -4.0 -2 7 5 6 4 300 100 20 Rev. B | Page 3 of 19 Max -5.5 -0.90 -7.0 -7 85 75 62 40 -0.5 -0.5 -2.6 -0.487 -2.6 -0.5 -0.1 0.8 Unit V mA mA A V rms V rms V rms V rms nV/Hz nV/Hz nV/Hz -4.5 +0.5 +2.6 dB dB dB dB V % % -0.513 +2.6 V % +0.3 2.6 %/V %/A -10 nA -10 nA -40 -130 -400 TJ rising Typ 280 1.3 61 15 55 4 10 1.5 -600 150 15 -65 -220 mV mV -800 k ms ms ms ms ms mA C C ADP7183 Parameter UNDERVOLTAGE LOCKOUT THRESHOLDS Input Voltage Rising Falling Hysteresis EN INPUT (NEGATIVE) Logic High Logic Low Hysteresis Leakage Current EN INPUT (POSITIVE) Logic High Logic Low Leakage Current Data Sheet Symbol Test Conditions/Comments UVLORISE UVLOFALL UVLOHYS VEN-NEG-HIGH VEN-NEG_LOW ENHYS-NEG IEN-LKG VEN-POS-HIGH VEN-POS-LOW IEN-LKG Min Typ Max Unit -1.77 V V mV -1.58 90 -2 V VIN -5.5 V VOUT = off to on VOUT = on to off EN = VIN or GND -2 V VIN -5.5 V VOUT = off to on VOUT = on to off VEN = 5 V, VIN = -5.5 V -1.3 0.5 -1.16 -0.96 191 -0.25 0.96 0.89 4.0 -0.88 1.25 6.0 V V mV A V V A Guaranteed by characterization but not production tested. Based on an endpoint calculation using -1 mA and -300 mA loads. 3 Dropout voltage is defined as the input to output voltage differential when the input voltage is set to the nominal output voltage. Dropout applies only for output voltages below -2 V. 4 Start-up time is defined as the time between the rising edge of EN to VOUT being at 90% of its nominal value. 5 Current-limit threshold is defined as the current at which the output voltage drops to 90% of the specified typical value. For example, the current-limit threshold for a -3.0 V output voltage is defined as the current that causes the output voltage to drop to 90% of -3.0 V, or -2.7 V. 1 2 INPUT AND OUTPUT CAPACITOR RECOMMENDED SPECIFICATIONS Table 2. Parameter CAPACITANCE Minimum CIN and COUT Capacitance 1 Minimum CA and CREG Capacitance 2 Minimum CAFB Capacitance 3 Capacitor Equivalent Series Resistance (ESR) Symbol Test Conditions/Comments TA = -40C to +125C CIN, COUT CA, CREG CAFB RESR Min Typ 3.3 0.7 0.7 4.7 1 10 Max Unit 0.1 F F nF The minimum input and output capacitance must be greater than 3.3 F over the full range of operating conditions. X7R and X5R type capacitors are recommended; Y5V and Z5U capacitors are not recommended for use with any LDO. 2 The minimum CA and CREG capacitance must be greater than 0.7 F over the full range of operating conditions. X7R and X5R type capacitors are recommended; Y5V and Z5U capacitors are not recommended for use with any LDO. 3 The minimum CAFB capacitance must be greater than 0.7 nF over the full range of operating conditions. X7R and X5R type capacitors are recommended; Y5V and Z5U capacitors are not recommended for use with any LDO. 1 Rev. B | Page 4 of 19 Data Sheet ADP7183 ABSOLUTE MAXIMUM RATINGS Table 3. Parameter VIN to GND VOUT to GND EN to GND VA to GND VAFB to GND VREG to GND SENSE to GND Storage Temperature Range Operating Junction Temperature Range Soldering Conditions Rating +0.3 V to -6 V +0.3 V to -VIN +5.0 V to -6 V +0.3 V to -6 V +0.3 V to -6 V +0.3 V to -2.16 V +0.3 V to -6 V -65C to +150C -40C to +125C JEDEC J-STD-020 Stresses at or above those listed under Absolute Maximum Ratings may cause permanent damage to the product. This is a stress rating only; functional operation of the product at these or any other conditions above those indicated in the operational section of this specification is not implied. Operation beyond the maximum operating conditions for extended periods may affect product reliability. temperature (TJ) of the device is dependent on the ambient temperature (TA), the power dissipation of the device (PD), and the junction to ambient thermal resistance of the package (JA). Use the following equation to calculate the junction temperature (TJ) from the ambient temperature (TA) and power dissipation (PD): TJ = TA + (PD x JA) The junction to ambient thermal resistance (JA) of the package is based on modeling and calculation using a 4-layer board. The junction to ambient thermal resistance is highly dependent on the application and board layout. In applications where high maximum power dissipation exists, close attention to thermal board design is required. The JA value may vary, depending on the PCB material, layout, and environmental conditions. The specified JA values are based on a 4-layer, 4 in. x 3 in. circuit board. THERMAL RESISTANCE Thermal performance is directly linked to printed circuit board (PCB) design and operating environment. Careful attention to PCB thermal design is required. Table 4. Thermal Resistance THERMAL DATA Absolute maximum ratings apply individually only, not in combination. The ADP7183 can be damaged when the junction temperature limits are exceeded. Monitoring ambient temperature does not guarantee that TJ is within the specified temperature limits. In applications with high power dissipation and poor thermal resistance, the maximum ambient temperature may have to be derated. Package Type CP-8-271 1 JA 68.8 JC 10.0 Unit C/W Thermal impedance simulated values are based on JEDEC 2S2P thermal test board with four thermal vias. See JEDEC JESD51. ESD CAUTION In applications with moderate power dissipation and low printed circuit board (PCB) thermal resistance, the maximum ambient temperature can exceed the maximum limit as long as the junction temperature is within specification limits. The junction Rev. B | Page 5 of 19 ADP7183 Data Sheet PIN CONFIGURATION AND FUNCTION DESCRIPTIONS VOUT 1 VA 3 VAFB 4 8 VIN ADP7183 7 VREG TOP VIEW (Not to Scale) 6 GND 5 EN NOTES 1. EXPOSED PAD. THE EXPOSED PAD ENHANCES THE THERMAL PERFORMANCE AND IS ELECTRICALLY CONNECTED TO VIN INSIDE THE PACKAGE. IT IS RECOMMENDED THAT THE EXPOSED PAD CONNECT TO THE INPUT VOLTAGE PLANE ON THE BOARD. 12897-003 SENSE 2 Figure 3. Pin Configuration Table 5. Pin Function Descriptions Pin No. 1 2 3 4 Mnemonic VOUT SENSE VA VAFB 5 EN 6 7 GND VREG 8 VIN EP Description Regulated Output Voltage. Bypass the VOUT pin to the GND pin with a 4.7 F or greater capacitor. Sense Input. Connect this pin to the VOUT pin. Low Noise Reference Voltage. Connect a 1 F capacitor to GND to reduce noise. Do not connect a load to ground. Output Voltage Reference Feedback (Adjust Mode). Connect a 1 nF to 1 F capacitor between the VAFB pin and the VA pin to reduce noise. Start-up time is increased as a function of the capacitance. Connect an external resistor divider between the VA pin and the VAFB pin to set the output voltage in adjust mode. Enable. Drive EN at least +1.25 V above or -1.3 V below ground to enable the regulator or drive EN to ground to turn the regulator off. For automatic startup, connect EN to VIN. Ground. Regulated Input Supply to the LDO Amplifier. Bypass VREG to GND with a 1 F or greater capacitor. Do not connect a load to ground. Regulator Input Supply. Bypass VIN to GND with a 4.7 F or greater capacitor. Exposed Pad. The exposed pad enhances the thermal performance and is electrically connected to VIN inside the package. It is recommended that the exposed pad connect to the input voltage plane on the board. Rev. B | Page 6 of 19 Data Sheet ADP7183 TYPICAL PERFORMANCE CHARACTERISTICS VIN = -3.8 V, VOUT = -3.3 V, IOUT = -10 mA, CIN = COUT = 4.7 F, CAFB = 10 nF, CA = CREG = 1 F, TA = 25C, unless otherwise noted. 0 -1.186 -0.5 GROUND CURRENT (mA) -1.191 -1.201 -1.206 NO LOAD ILOAD = -10mA ILOAD = -100mA ILOAD = -300mA -1.216 -60 -40 -20 0 20 40 60 80 100 120 -1.5 -2.0 NO LOAD ILOAD = -10mA ILOAD = -100mA ILOAD = -300mA -2.5 -3.0 -3.5 140 JUNCTION TEMPERATURE (C) -4.0 -40 12897-204 -1.211 -1.0 -15 10 35 60 85 110 135 JUNCTION TEMPERATURE (C) 12897-017 VOUT (V) -1.196 Figure 7. Ground Current vs. Junction Temperature (TJ), VOUT = -1.2 V Figure 4. Output Voltage (VOUT) vs. Junction Temperature, VOUT = -1.2 V 0 -1.186 -0.5 GROUND CURRENT (mA) -1.191 VOUT (V) -1.196 -1.201 -1.206 -1.0 -1.5 -2.0 -2.5 -3.0 -1.211 -10 -4.0 -300 -200 -100 0 ILOAD (mA) Figure 5. Output Voltage (VOUT) vs. Load Current (ILOAD), VOUT = -1.2 V 12897-018 -100 ILOAD (mA) 12897-205 -3.5 -1.216 -1000 Figure 8. Ground Current vs. Load Current (ILOAD), VOUT = -1.2 V -1.186 0 -0.5 -1.196 -1.216 -1.226 NO LOAD ILOAD = -10mA ILOAD = -100mA ILOAD = -300mA -1.236 -1.246 -5.5 -5.0 -4.5 -4.0 -3.5 -3.0 -2.5 -1.5 -2.0 -2.5 -3.0 -3.5 NO LOAD ILOAD = -10mA ILOAD = -100mA ILOAD = -300mA -4.0 -4.5 -2.0 VIN (V) 12897-206 VOUT (V) -1.206 -5.0 -5.5 -5.0 -4.5 -4.0 -3.5 -3.0 -2.5 -2.0 VIN (V) Figure 6. Output Voltage (VOUT) vs. Input Voltage (VIN), VOUT = -1.2 V Figure 9. Ground Current vs. Input Voltage (VIN), VOUT = -1.2 V Rev. B | Page 7 of 19 12897-019 GROUND CURRENT (mA) -1.0 ADP7183 Data Sheet 0 -2.435 -2.455 -1.0 -1.5 -2.475 VOUT (V) -2.0 -2.5 VIN = -2.0V VIN = -2.5V VIN = -3.0V VIN = -3.5V VIN = -4.0V VIN = -4.5V VIN = -5.0V VIN = -5.5V -3.5 -4.0 -4.5 -5.0 -40 -15 10 -2.495 -2.515 -2.535 NO LOAD ILOAD = -10mA ILOAD = -100mA ILOAD = -300mA -2.555 35 60 85 110 135 JUNCTION TEMPERATURE (C) -2.575 -5.5 -5.0 -4.5 -4.0 -3.5 -3.0 VIN (V) Figure 10. Shutdown Current vs. Junction Temperature at Various Input Voltages, VOUT = -1.2 V 12897-213 -3.0 12897-020 SHUTDOWN CURRENT (A) -0.5 Figure 13. Output Voltage (VOUT) vs. Input Voltage (VIN), VOUT = -2.5 V 0 -2.435 -0.5 GROUND CURRENT (mA) -2.455 -2.495 -2.515 NO LOAD ILOAD = -10mA ILOAD = -100mA ILOAD = -300mA -2.555 -60 -40 -20 0 20 40 60 80 100 120 -2.0 -2.5 -3.0 -3.5 140 JUNCTION TEMPERATURE (C) 12897-211 -2.535 -1.5 -4.0 -300 -250 -200 -150 -100 -50 0 ILOAD (mA) Figure 11. Output Voltage (VOUT) vs. Junction Temperature (TJ), VOUT = -2.5 V 12897-124 VOUT (V) -2.475 -1.0 Figure 14. Ground Current vs. Load Current (ILOAD), VOUT = -2.5 V 0 -2.455 -0.5 GROUND CURRENT (mA) VOUT (V) -2.475 -2.495 -2.515 -2.535 -1.0 -1.5 -2.0 ILOAD ILOAD ILOAD ILOAD -2.5 -3.0 = -10mA = -100mA = -200mA = -300mA -10 -4.0 -5.5 -5.0 -4.5 -4.0 -3.5 -3.0 VIN (V) Figure 12. Output Voltage (VOUT) vs. Load Current (ILOAD), VOUT = -2.5 V Figure 15. Ground Current vs. Input Voltage (VIN), VOUT = -2.5 V Rev. B | Page 8 of 19 12897-125 -100 ILOAD (mA) 12897-212 -3.5 -2.555 -1000 Data Sheet ADP7183 0 -3.249 -3.269 -40 VOUT (V) -60 -80 -3.289 -3.309 -3.329 -100 -3.349 -120 -100 -3.369 -1000 12897-029 -140 -1000 -10 ILOAD (mA) -100 12897-219 DROPOUT VOLTAGE (mV) -20 -10 ILOAD (mA) Figure 19. Output Voltage (VOUT) vs. Load Current (ILOAD), VOUT = -3.3 V Figure 16. Dropout Voltage vs. Load Current (ILOAD), VOUT = -2.5 V -2.36 -2.40 NO LOAD ILOAD = -10mA ILOAD = -100mA ILOAD = -300mA -3.26 -3.28 VOUT (V) VOUT (V) -2.42 -2.44 -2.46 -3.30 -3.32 -3.34 -2.48 NO LOAD ILOAD = -10mA ILOAD = -100mA ILOAD = -300mA -3.36 -2.50 -3.38 -5.5 -3.0 -2.9 -2.8 -2.7 -2.6 -2.5 -2.4 VIN (V) 12897-030 -2.52 -3.1 -5.3 -5.1 -4.9 -4.7 -4.5 -4.3 -4.1 -3.9 VIN (V) 12897-220 -2.38 Figure 20. Output Voltage (VOUT) vs. Input Voltage (VIN), VOUT = -3.3 V Figure 17. Output Voltage (VOUT) vs. Input Voltage (VIN) in Dropout at Various Loads, VOUT = -2.5 V 0 -3.239 -0.5 -1.0 GROUND CURRENT (mA) -3.259 -3.299 -3.319 NO LOAD ILOAD = -10mA ILOAD = -100mA ILOAD = -300mA -3.359 -60 -40 -20 0 20 40 60 80 JUNCTION TEMPERATURE (C) 100 120 NO LOAD ILOAD = -10mA ILOAD = -100mA ILOAD = -300mA -2.5 -3.0 -3.5 -4.0 140 12897-218 -3.339 -2.0 -4.5 -40 -15 10 35 60 85 JUNCTION TEMPERATURE (C) 110 135 12897-007 VOUT (V) -3.279 -1.5 Figure 21. Ground Current vs. Junction Temperature (TJ), VOUT = -3.3 V Figure 18. Output Voltage (VOUT) vs. Junction Temperature (TJ), VOUT = -3.3 V Rev. B | Page 9 of 19 Data Sheet 0 0 -0.5 -20 DROPOUT VOLTAGE (mV) -1.0 -1.5 -2.0 -2.5 -3.0 -60 -80 -100 -200 -100 0 ILOAD (mA) -140 -1000 12897-008 -4.0 -300 Figure 22. Ground Current vs. Load Current (ILOAD), VOUT = -3.3 V Figure 25. Dropout Voltage vs. Load Current (ILOAD), VOUT = -3.3 V -3.21 -0.5 -3.22 -1.0 -3.23 -1.5 -3.24 -2.0 -3.25 VOUT (V) 0 -2.5 NO LOAD ILOAD = -10mA ILOAD = -100mA ILOAD = -300mA -3.26 -3.27 -3.0 -3.28 -3.5 -4.0 -3.29 ILOAD = NO LOAD ILOAD = -10mA ILOAD = -100mA ILOAD = -300mA -5.3 -5.1 -4.9 -4.7 -4.5 -4.3 -4.1 -3.9 VIN (V) -3.30 -3.31 -3.9 12897-009 -4.5 -5.0 -5.5 -10 -100 ILOAD (mA) 12897-011 -120 -3.5 GROUND CURRENT (mA) -40 -3.8 -3.7 -3.6 -3.5 -3.4 -3.3 -3.2 VIN (V) 12897-012 GROUND CURRENT (mA) ADP7183 Figure 26. Output Voltage (VOUT) vs. Input Voltage (VIN) in Dropout at Various Loads, VOUT = -3.3 V Figure 23. Ground Current vs. Input Voltage (VIN), VOUT = -3.3 V 0 0 -5 GROUND CURRENT (mA) -1.0 -1.5 -2.0 -2.5 -3.0 -3.5 -4.5 -5.0 -40 VIN = -3.8V VIN = -4.0V VIN = -4.5V VIN = -5.0V VIN = -5.5V -20 0 -10 -15 -20 ILOAD = -10mA ILOAD = -100mA ILOAD = -300mA 20 40 60 80 100 120 140 JUNCTION TEMPERATURE (C) -25 -3.9 -3.8 -3.7 -3.6 -3.5 -3.4 -3.3 -3.2 -3.1 -3.0 -2.9 -2.8 -2.7 VIN (V) Figure 27. Ground Current vs. Input Voltage (VIN) in Dropout at Various Loads, VOUT = -3.3 V Figure 24. Shutdown Current vs. Junction Temperature (TJ) at Various Input Voltages, VOUT = -3.3 V Rev. B | Page 10 of 19 12897-013 -4.0 12897-010 SHUTDOWN CURRENT (A) -0.5 Data Sheet ADP7183 0 0 ILOAD ILOAD ILOAD ILOAD -10 -20 = -10mA = -100mA = -200mA = -300mA VIN = -2.0V VIN = -2.1V VIN = -2.2V VIN = -2.3V VIN = -2.4V VIN = -2.5V -10 -20 -30 -60 -60 -80 -70 -90 -80 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz) -90 1 0 -20 = -10mA = -100mA = -200mA = -300mA -20 -30 -40 -40 PSRR (dB) -30 -50 -60 -80 -90 -90 1k 10k 100k 1M 10M FREQUENCY (Hz) 12897-033 -70 100 -100 1 0 -20 10 100 1k 10k 100k 1M 10M Figure 32. Power Supply Rejection Ratio (PSRR) vs. Frequency at Various Input Voltages, VOUT = -2.5 V, ILOAD = -300 mA 0 ILOAD ILOAD ILOAD ILOAD 10M FREQUENCY (Hz) Figure 29. Power Supply Rejection Ratio (PSRR) vs. Frequency at Various Loads, VOUT = -2.5 V, VIN = -3 V -10 1M -60 -80 10 100k -50 -70 1 10k VIN = -3.0V VIN = -3.1V VIN = -3.2V VIN = -3.3V VIN = -3.4V VIN = -3.5V -10 -100 1k Figure 31. Power Supply Rejection Ratio (PSRR) vs. Frequency at Various Input Voltages, VOUT = -1.2 V, ILOAD = -300 mA 0 ILOAD ILOAD ILOAD ILOAD 100 FREQUENCY (Hz) Figure 28. Power Supply Rejection Ratio (PSRR) vs. Frequency at Various Loads, VOUT = -1.2 V, VIN = -2 V -10 10 12897-332 1 = -10mA = -100mA = -200mA = -300mA VIN = -3.8V VIN = -3.9V VIN = -4.0V VIN = -4.1V VIN = -4.2V VIN = -4.3V -10 -20 -30 -30 -40 -40 PSRR (dB) -50 -60 -70 -80 -50 -60 -70 -80 -90 -90 -100 -100 -110 1 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz) 12897-034 -110 -120 Figure 30. Power Supply Rejection Ratio (PSRR) vs. Frequency at Various Loads, VOUT = -3.3 V, VIN = -3.8 V -120 1 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz) Figure 33. Power Supply Rejection Ratio (PSRR) vs. Frequency at Various Input Voltages, VOUT = -3.3 V, ILOAD = -300 mA Rev. B | Page 11 of 19 12897-333 PSRR (dB) -50 -70 -100 PSRR (dB) -40 12897-331 PSRR (dB) -50 12897-032 PSRR (dB) -30 -40 ADP7183 Data Sheet 4.40 10Hz TO 100kHz 100Hz TO 100kHz 4.35 VIN 4.30 1 RMS NOISE (V rms) 4.25 4.20 4.15 4.10 VOUT 4.05 2 4.00 3.95 3.90 -100 -10 LOAD CURRENT (mA) Figure 34. RMS Noise vs. Load Current (ILOAD) at Various Frequencies CH1 500mV CH2 2.0mV 5.0s/DIV 1MS 20GSPS 40mV Figure 37. Line Transient Response, 500 mV Step, VOUT = -3.3 V, ILOAD = -300 mA 10k T -1.2V -2.5V -3.3V -4.5V -4.5V ADJ 1k A CH2 12897-140 3.80 -1000 12897-038 3.85 VOUT 100 10 1 ILOAD 0.1 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz) 12897-235 1 Figure 35. Noise Spectral Density (NSD) vs. Frequency at Various Output Voltages CH1 200mA CH2 2.00mV M10.00s T 21.4s A CH1 -222mA 12897-141 NSD (nV/Hz) 2 Figure 38. Load Transient Response, VOUT = -1.2 V, ILOAD = -10 mA to -300 mA T VIN VOUT 1 2 VOUT 2 1 CH2 2.0mV 5.0s/DIV 1MS 20GSPS A CH2 40mV CH1 200mA CH2 2.00mV Figure 36. Line Transient Response, 500 mV Step, VOUT = -1.2 V, ILOAD = -300 mA M10.00s T 21.2s A CH1 -200mA 12897-142 CH1 500mV 12897-139 ILOAD Figure 39. Load Transient Response, VOUT = -2.5 V, ILOAD = -10 mA to -300 mA Rev. B | Page 12 of 19 Data Sheet ADP7183 THEORY OF OPERATION The ADP7183 is a low quiescent current, LDO linear regulator that operates from -2.0 V to -5.5 V and can provide up to -300 mA of output current. Total integrated output noise is 4 V rms independent of the output voltage, making it ideal for high performance and noise sensitive applications. Shutdown current consumption is -7 A (maximum). The ADP7183 is optimized for use with a 4.7 F ceramic capacitor for excellent transient performance. Using advanced proprietary architecture, the ADP7183 provides ultralow noise and high power supply rejection up to high frequencies of operation. Figure 40 shows the fixed output voltage internal block diagram of the ADP7183, and Figure 41 show the adjustable output voltage internal block diagram of the ADP7183. models, the VA voltage generates externally through the R1 and R2 resistors that are connected across the VA and VAFB pins. Because the reference voltage to the LDO regulator already adjusts according to the desired VOUT, the LDO regulator now connects in a buffer configuration for improved noise performance. If the load draws higher current, the LDO regulator pulls the gate of the NMOS device higher towards GND to allow more current to pass. If the load draws less current, the LDO regulator pulls the gate of the NMOS device lower toward -VIN to restrict the amount of current passing through the device. ADJUSTABLE MODE OPERATION The adjustable mode version of the ADP7183 has an output that can be set to from -0.5 V to -4.5 V by an external voltage divider. To calculate the output voltage, use the following equation: R2 VOUT = -0.5 V(1 + R1/R2) VAFB VA Figure 42 shows an example of an adjustable setting where R1 = 280 k and R2 = 49.9 k, setting the output voltage to -3.3 V. SENSE R1 VOUT -0.5V REFERENCE R2 must be at least 10 k to maximize PSRR performance. GND EN VIN Figure 40. Fixed Output Voltage Internal Block Diagram VAFB VA SENSE VREG GND OFF 0V COUT 4.7F ADP7183 VA +1.25V R2 EN VAFB CAFB 10nF R1 280k CA 1F R2 49.9k Figure 42. Setting the Adjustable Output Voltage R1 ENABLE PIN OPERATION The ADP7183 uses the EN pin to enable and disable the VOUT pin under normal operating conditions. When EN is +1.25 V above or -1.3 V below with respect to GND, VOUT turns on and when EN is at 0 V, VOUT turns off, as shown in Figure 43. For automatic startup, connect EN to VIN. VOUT GM GND OVERCURRENT THERMAL PROTECTION VREG REG VIN EN Figure 41. Adjustable Output Voltage Internal Block Diagram 3 Internally, the ADP7183 consists of a regulator block, reference block, GM amplifier, feedback voltage divider, LDO regulator and a N channel MOSFET pass transistor. The regulator block produces an internal voltage rail (VREG) of -1.8 V to serve as the supply voltage for the succeeding internal blocks. The GM amplifier produces a reference voltage (VA) used as a reference to the LDO regulator. For fixed option models, the VA voltage is generated through the resistor divider ratio depending on the VOUT option. For adjustable Rev. B | Page 13 of 19 VOUT CH2 1.0V -15mV CH3 1.0V 0mV 200ms/DIV 2MS 1MSPS A CH2 Figure 43. Typical EN Pin Operation 40mV 12897-149 EN 12897-047 EN CREG 1F VOUT = -3.3V VOUT -1.3V ON SENSE -0.5V REFERENCE EP VIN CIN 4.7F REG 12897-046 EN VIN = -3.8V OVERCURRENT THERMAL PROTECTION 12897-048 GM VREG (1) ADP7183 Data Sheet START-UP TIME 0.5 -0.5 = 1nF = 10nF = 100nF = 1F -1.0 VOUT (V) When the output is enabled, the ADP7183 uses an internal soft start to limit the inrush current. The start-up time for a -1.2 V output is approximately 12 ms from the time the EN active threshold is crossed to the time when the output reaches 90% of its final value (see Figure 44). As shown in Figure 44 and Figure 45, the start-up time is dependent upon the output voltage option and the value of the CAFB capacitor. EN CAFB CAFB CAFB CAFB 0 -1.5 -2.0 -2.5 -3.0 1 EN VOUT = -4.5V VOUT = -3.3V VOUT = -2.5V VOUT = -1.2V -3.5 -4.0 -4.5 VOUT, EN (V) -1 10 30 50 70 90 110 130 150 170 190 210 230 TIME (ms) 12897-245 0 -2 Figure 45. Start-Up Time at Various CAFB Capacitor Values, CA = 1 F -3 A second time constant, 2, is dependent mainly on CAFB. Figure 45 shows how the CAFB value affects the start-up time. Estimate 2 by -4 2 CAFB x R1 -6 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 TIME (ms) 12897-244 -5 Figure 44. Start-Up Time at Various Output Voltages, CAFB = 10 nF, CA = 1 F The total start-up time depends mostly on the CA and CAFB values expressed by the 1 and 2 equations (see Equation 1 and Equation 2). During startup, an internal circuit, GM_START, turns on and helps charge CA up to 90% of the final value. Estimate the first time constant, 1, due to CA by 1 CA x ((R1 + R2) // ZOUT) (2) During this time, keep ZOUT low to approximately 1 k to allow quick start-up times, keeping 1 in the order of 1 ms. (3) The R1 value scales vs. the VOUT option. Table 6 shows the R1 value depending on the fixed output voltage option, whereas R2 is constant at 500 k. For example, at a fixed VOUT = -3.3 V, R1 is equal to 2.8 M. To keep 2 at a minimum, it is recommended that CAFB be in the approximately nanofarad range. A typical setup for the ADP7183 is CAFB = 10 nF; therefore, 2 = 28 ms. The total time constant, TOTAL, is the sum of 1 and 2. At 2.2 x TOTAL, VA is equal to ~90% of the final value. Therefore, for a fixed VOUT = -3.3 V, the output voltage is ~90% of the final value after 63.8 ms. Table 6. R1 and R2 Values for the Fixed Output Options Output Voltage (V) -1.2 -2.5 -3.3 -4.5 R1 () 700 k 2M 2.8 M 4M R2 (k) 500 500 500 500 Note that 1 and 2 are estimates only and do not take into account that GM and ZOUT dynamically change. It is an accurate estimate of ~90% of the start-up time for the CAFB < 10 nF recommended setup, where ~100% of the settling time can easily be achieved. Note that for setups with CAFB >> 10 nF, the equation may not hold true anymore. However, it is still a convenient estimate on the amount of time needed to achieve ~100% of the settling time. Rev. B | Page 14 of 19 Data Sheet ADP7183 APPLICATIONS INFORMATION ADIsimPOWER DESIGN TOOL CA and CAFB Capacitors The ADIsimPowerTM design tool set supports the ADP7183. ADIsimPower is a collection of tools that produce complete power designs optimized for a specific design goal. The tools enable the user to generate a full schematic, bill of materials, and calculate performance in minutes. ADIsimPower can optimize designs for cost, area, efficiency, and parts count, taking into consideration the operating conditions and limitations of the IC and all external components. For more information about, and to obtain ADIsimPower design tools, visit www.analog.com/ADIsimPower. The ultralow output noise of the ADP7183 is achieved by keeping the LDO error amplifier in unity gain and setting the reference voltage equal to the output voltage. In this architecture, the resistor driven by the GM amplifier adjusts the reference voltage to the selected output voltage. To ensure the GM amplifier stability, the CA capacitor is needed to generate the dominant pole and to keep the GM amplifier stable across all conditions. CA also serves as a dampening capacitor to the inputs of the LDO error amplifier for improved PSRR. However, the LDO output noise scales by the GM amplifier amount of gain as a function of the output voltage. To minimize the output voltage noise contributed by the GM amplifier, the CAFB capacitor must be connected between the VA and VAFB pins to keep the ac gain of the GM amplifier in unity. Output Capacitor The ADP7183 operates with small, space-saving ceramic capacitors; however, it functions with general-purpose capacitors as long as care is taken with regard to the ESR value. The ESR of the output capacitor affects the stability of the LDO regulator control loop. A minimum of 4.7 F capacitance with an ESR of 0.05 or less is recommended to ensure the stability of the ADP7183. Output capacitance affects the transient response to changes in load currents. Using a larger value for the output capacitance improves the transient response of the ADP7183 to large changes in load current. Figure 46 shows the transient response for an output capacitance value of 4.7 F. CA VAFB CAFB R1 REFERENCE GM VA Figure 47. CA and CAFB Connection to GM Amplifier Any good quality ceramic capacitors can be used with the ADP7183 if they meet the minimum capacitance and maximum ESR requirements. Ceramic capacitors are manufactured with a variety of dielectrics, each with different behavior over temperature and applied voltage. Capacitors must have a dielectric adequate to ensure the minimum capacitance over the necessary temperature range and dc bias conditions. X5R and X7R dielectrics with a voltage rating from 6.3 V to 10 V are recommended. Due to their poor temperature and dc bias characteristics, Y5V and Z5U dielectrics are not recommended. VOUT 2 1 M10.00s T 21.4s A CH1 -222mA 12897-300 ILOAD CH2 2.00mV R2 Input and Output Capacitor Properties T CH1 200mA GND 12897-100 CAPACITOR SELECTION Figure 46. Output Transient Response, COUT = 4.7 F, VOUT = -1.2 V Input Bypass Capacitor Connecting a 4.7 F or greater capacitor from VIN to GND reduces the circuit sensitivity to the PCB layout, especially when long input traces or high source impedance are encountered. When more than 4.7 F of output capacitance is required, increase the input capacitance to match it. Rev. B | Page 15 of 19 ADP7183 Data Sheet 0.05 0 -0.05 -0.10 -0.15 -0.20 -0.25 -0.30 -0.35 4.70 -0.40 -0.45 3.76 -0.55 -1.75 -1.73 -1.71 -1.69 -1.67 -1.65 -1.63 -1.61 VIN (V) 1.88 12897-349 -0.50 2.82 Figure 49. Typical UVLO Behavior, VOUT = -0.5 V CURRENT-LIMIT AND THERMAL OVERLOAD PROTECTION 0.94 0 0 2 4 6 8 10 12 DC BIAS VOLTAGE (V dc) 12897-053 CHANGE IN CAPACITANCE (F) 5.64 A typical hysteresis of 90 mV within the UVLO circuitry prevents the device from oscillating due to the noise from VIN. VOUT (V) Figure 48 shows the capacitance change vs. the bias voltage characteristics of a 0805 case, 4.7 F, 10 V, X5R capacitor. The capacitor size and voltage rating strongly influences the voltage stability of a capacitor. In general, a capacitor in a larger package or with a higher voltage rating exhibits improved stability. The temperature variation of the X5R dielectric is about 15% over the -55C to +85C temperature range and is not a function of package size or voltage rating. Figure 48. Change in Capacitance vs. DC Bias Voltage Use Equation 4 to determine the worst-case capacitance, accounting for capacitor variation over temperature, component tolerance, and voltage. CEFF = COUT x (1 - Tempco) x (1 - TOL) (4) where: CEFF is the effective capacitance at the operating voltage. COUT is the output capacitor. Tempco is the worst case capacitor temperature coefficient. TOL is the worst case component tolerance. In this example, the worst-case temperature coefficient (Tempco) over -55C to +85C is assumed to be 15% for an X5R dielectric. The tolerance of the capacitor (TOL) is assumed to be 10%, and COUT = 4.7 F at 1.0 V. Substituting these values in Equation 4 yields CEFF = 4.7 F x (1 - 0.15) x (1 - 0.1) = 3.6 F Therefore, the capacitor chosen in this example meets the minimum capacitance requirement of the LDO regulator over temperature and tolerance at the chosen output voltage. To guarantee the performance of the ADP7183, it is imperative that the effects of dc bias, temperature, and tolerances on the behavior of the capacitors be evaluated for each application. UNDERVOLTAGE LOCKOUT (UVLO) The UVLO circuitry protects the system from power supply brownouts. If the input voltage on VIN is more positive than the minimum -1.58 V UVLO falling threshold, the LDO output shuts down. The LDO enables again when the voltage to VIN is more negative than the maximum -1.77 V UVLO rising threshold. The ADP7183 is protected against damage due to excessive power dissipation by current-limit and thermal overload protection circuits. The ADP7183 is designed to reach the current limit when the output load reaches -600 mA (typical). When the output load exceeds -600 mA, the output voltage reduces to maintain a constant current limit. Thermal overload protection is included, which limits the junction temperature to a threshold of 150C (typical). Under extreme conditions (that is, high ambient temperature and power dissipation) when the junction temperature begins to rise above 150C, the output turns off, reducing the output current to zero. When the junction temperature drops below 135C (typical), the output turns on again, and the output current is restored to its nominal value. Consider the case where a hard short from VOUT to GND occurs. At first, the ADP7183 reaches the current limit so that only -600 mA is conducted into the short. If self heating of the junction becomes great enough to cause its temperature to rise above 150C, thermal shutdown activates, turning off the output and reducing the output current to 0 mA. As the junction temperature cools and drops below 135C, the output turns on and conducts -600 mA into the short circuit, again causing the junction temperature to rise above 150C. This thermal oscillation between 135C and 150C causes a current oscillation between -600 mA and 0 mA that continues as long as the short remains at the output. Current-limit and thermal overload protections protect the device against accidental overload conditions. For reliable operation, device power dissipation must be externally limited so that junction temperatures do not exceed 125C. Rev. B | Page 16 of 19 Data Sheet ADP7183 Table 7 shows the typical JA values for the 8-lead LFCSP package for various PCB copper sizes. Table 7. Typical JA Values for the 8-Lead LFCSP JA (C/W) 146.6 105.4 75.38 65.16 53.5 TJ MAX 6400mm 2 1000mm 2 500mm 2 100mm 2 25mm 2 40 0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 TOTAL POWER DISSIPATION (W) Figure 50. Junction Temperature vs. Total Power Dissipation, TA = 25C 140 120 100 80 60 TJ MAX 6400mm 2 1000mm 2 500mm 2 100mm 2 25mm 2 40 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 TOTAL POWER DISSIPATION (W) Figure 51. Junction Temperature vs. Total Power Dissipation, TA = 50C (5) 140 120 80 60 TJ MAX 6400mm 2 1000mm 2 500mm 2 100mm 2 25mm 2 40 20 Power dissipation due to ground current is quite small and can be ignored. Therefore, the junction temperature equation simplifies to (7) 100 0 0 0.2 0.4 0.6 0.8 1.0 1.2 TOTAL POWER DISSIPATION (W) 1.4 1.6 12897-057 (6) where: VIN and VOUT are the input and output voltages, respectively. ILOAD is the load current. IGND is the ground current. TJ = TA + (((VIN - VOUT) x ILOAD) x JA) 60 0 where: TA is the ambient temperature. PD is the power dissipation in the die, given by PD = ((VIN - VOUT) x ILOAD) + (VIN x IGND) 80 20 Calculate the junction temperatures of the ADP7183 by TJ = TA + (PD x JA) 100 20 JUNCTION TEMPERATURE (C) Copper Size (mm2) 25 100 500 1000 6400 120 12897-055 To guarantee reliable operation, the junction temperature of the ADP7183 must not exceed 125C. To ensure that the junction temperature stays below this maximum value, the user must be aware of the parameters that contribute to junction temperature changes. These parameters include ambient temperature, power dissipation in the power device, and thermal resistances between the junction and ambient air (JA). The JA number is dependent on the package assembly compounds that are used, and the amount of copper used to solder the package VIN pins to the PCB. 140 12897-056 When the junction temperature exceeds 150C, the converter enters thermal shutdown. The converter recovers only after the junction temperature decreases below 135C to prevent any permanent damage. Therefore, thermal analysis for the chosen application is important to guarantee reliable performance over all conditions. The junction temperature of the die is the sum of the ambient temperature of the environment and the temperature rise of the package due to the power dissipation, as shown in Equation 5. Figure 50 to Figure 52 show the junction temperature calculations for the different ambient temperatures, power dissipation, and areas of the PCB copper. JUNCTION TEMPERATURE (C) In applications with a low input-to-output voltage differential, the ADP7183 does not dissipate much heat. However, in applications with high ambient temperature and/or high input voltage, the heat dissipated in the package may become large enough to cause the junction temperature of the die to exceed the maximum junction temperature of 125C. As shown in Equation 7, for a given ambient temperature, input-to-output voltage differential, and continuous load current, a minimum copper size requirement exists for the PCB to ensure that the junction temperature does not rise above 125C. JUNCTION TEMPERATURE (C) THERMAL CONSIDERATIONS Figure 52. Junction Temperature vs. Total Power Dissipation, TA = 85C Rev. B | Page 17 of 19 ADP7183 Data Sheet PCB LAYOUT CONSIDERATIONS 12897-060 Place the input capacitor (CIN) as close as possible to the VIN and GND pins. Place the output capacitor (COUT) as close as possible to the VOUT and GND pins. Place bypass capacitors (CA and CREG) close to the respective pins (VA and VREG) and GND. Use of 0805 or 0603 size capacitors and resistors achieves the smallest possible footprint solution on boards where area is limited. Connect the exposed pad to VIN. 12897-059 Figure 54. Typical Board Layout, Top Side 12897-061 Figure 53. Evaluation Board Figure 55. Typical Board Layout, Bottom Side Rev. B | Page 18 of 19 Data Sheet ADP7183 OUTLINE DIMENSIONS DETAIL A (JEDEC 95) 1.60 1.50 1.40 0.50 BSC 2.10 2.00 SQ 1.90 8 5 PIN 1 INDEX AREA 1.10 1.00 0.90 EXPOSED PAD 0.30 0.25 0.20 4 TOP VIEW SIDE VIEW 0.30 0.25 0.20 PKG-004752 SEATING PLANE PIN 1 INDIC ATOR AREA OPTIONS (SEE DETAIL A) FOR PROPER CONNECTION OF THE EXPOSED PAD, REFER TO THE PIN CONFIGURATION AND FUNCTION DESCRIPTIONS SECTION OF THIS DATA SHEET. 0.05 MAX 0.02 NOM 0.152 REF 08-24-2016-A 0.60 0.55 0.50 1 BOTTOM VIEW Figure 56. 8-Lead Lead Frame Chip Scale Package [LFCSP] 2 mm x 2 mm Body and 0.55 mm Package Height (CP-8-27) Dimensions shown in millimeters ORDERING GUIDE Model1 ADP7183ACPZN0.5-R7 ADP7183ACPZN1.0-R7 ADP7183ACPZN1.2-R7 ADP7183ACPZN1.5-R7 ADP7183ACPZN1.8-R7 ADP7183ACPZN2.0-R7 ADP7183ACPZN2.5-R7 ADP7183ACPZN3.0-R7 ADP7183ACPZN3.3-R7 ADP7183ACPZN-R7 ADP7183-3.3-EVALZ ADP7183-ADJ-EVALZ 1 2 Temperature Range -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C Output Voltage (V)2 -0.5 -1.0 -1.2 -1.5 -1.8 -2.0 -2.5 -3.0 -3.3 Adjustable -3.3 -2.5 Package Description 8-Lead LFCSP 8-Lead LFCSP 8-Lead LFCSP 8-Lead LFCSP 8-Lead LFCSP 8-Lead LFCSP 8-Lead LFCSP 8-Lead LFCSP 8-Lead LFCSP 8-Lead LFCSP Evaluation Board for the Fixed Voltage Option Evaluation Board for the Adjustable Voltage Option Z = RoHS Compliant Part. For additional voltage options, contact a local Analog Devices Inc., sales or distribution representative. (c)2016-2017 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D12897-0-5/17(B) Rev. B | Page 19 of 19 Package Option CP-8-27 CP-8-27 CP-8-27 CP-8-27 CP-8-27 CP-8-27 CP-8-27 CP-8-27 CP-8-27 CP-8-27 Branding LS9 LSA LSB LSC LSD LSS LSE LSF LTM LS8