Product Folder Sample & Buy Technical Documents Support & Community Tools & Software LM137, LM337-N SNVS778E - MAY 1999 - REVISED JANUARY 2016 LM137, LM337-N 3-Terminal Adjustable Negative Regulators 1 Features 3 Description * * * * * * * The LM137 and LM337-N are adjustable 3-terminal negative voltage regulators capable of supplying -1.5 A or more currents over an output voltage range of -1.25 V to -37 V. It requires only two external resistors to set the output voltage and one output capacitor for frequency compensation. The circuit design has been optimized for excellent regulation and low thermal transients. Further, the LM137 and LM337-N feature internal current limiting, thermal shutdown and safe-area compensation, making it virtually blowout-proof against overloads. 1 1.5-A Output Current Line Regulation 0.01%/V (Typical) Load Regulation 0.3% (Typical) 77-dB Ripple Rejection 50 ppm/C Temperature Coefficient Thermal Overload Protection Internal Short-Circuit Current Limiting Protections 2 Applications * * * * * * * * Industrial Power Supplies Factory Automation Systems Building Automation Systems PLC Systems Instrumentation IGBT Drive Negative Gate Supplies Networking Set-Top Boxes The LM137 and LM337-N are ideal complements to the LM117 and LM317 adjustable positive regulators. The LM137 has a wider operating temperature range than the LM337-N and is also offered in military and space qualified versions. Device Information(1) PART NUMBER LM137 LM337-N PACKAGE BODY SIZE (NOM) TO (3) 8.255 mm x 8.255 mm SOT-223 (4) 3.50 mm x 6.50 mm TO (3) 8.255 mm x 8.255 mm TO-220 (3) 10.16 mm x 14.986 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. The LF01 is a lead formed (bent) version of the TO-220 package. Adjustable Negative Voltage Regulator Full output current not available at high input-output voltages R2 o ae -VOUT = -1.25V c 1 + / + (-I ADJ R 2 ) e 120 o C1 = 1-F solid tantalum or 10-F aluminum electrolytic required for stability *C2 = 1-F solid tantalum is required only if regulator is more than 4 from power-supply filter capacitor Output capacitors in the range of 1-F to 1000-F of aluminum or tantalum electrolytic are commonly used to provide improved output impedance and rejection of transients 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. LM137, LM337-N SNVS778E - MAY 1999 - REVISED JANUARY 2016 www.ti.com Table of Contents 1 2 3 4 5 6 7 Features .................................................................. Applications ........................................................... Description ............................................................. Revision History..................................................... Pin Configuration and Functions ......................... Specifications......................................................... 1 1 1 2 3 4 6.1 6.2 6.3 6.4 6.5 6.6 4 4 4 4 5 6 Absolute Maximum Ratings ...................................... ESD Ratings.............................................................. Recommended Operating Conditions....................... Thermal Information .................................................. Electrical Characteristics........................................... Typical Characteristics .............................................. Detailed Description .............................................. 8 7.1 7.2 7.3 7.4 Overview ................................................................... 8 Functional Block Diagram ......................................... 8 Feature Description................................................... 8 Device Functional Modes........................................ 10 8 Application and Implementation ........................ 12 8.1 Application Information............................................ 12 8.2 Typical Applications ................................................ 12 9 Power Supply Recommendations...................... 16 10 Layout................................................................... 16 10.1 Layout Guidelines ................................................. 16 10.2 Layout Example .................................................... 16 10.3 Thermal Considerations ........................................ 17 11 Device and Documentation Support ................. 18 11.1 11.2 11.3 11.4 11.5 11.6 Documentation Support ........................................ Related Links ........................................................ Community Resources.......................................... Trademarks ........................................................... Electrostatic Discharge Caution ............................ Glossary ................................................................ 18 18 18 18 18 18 12 Mechanical, Packaging, and Orderable Information ........................................................... 18 4 Revision History Changes from Revision D (April 2013) to Revision E Page * Added ESD Ratings 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. ................................................................................................. 1 * Deleted soldering information from Absolute Maximum Ratings ........................................................................................... 4 Changes from Revision C (April 2013) to Revision D * 2 Page Changed layout of National Data Sheet to TI format ............................................................................................................. 7 Submit Documentation Feedback Copyright (c) 1999-2016, Texas Instruments Incorporated Product Folder Links: LM137 LM337-N LM137, LM337-N www.ti.com SNVS778E - MAY 1999 - REVISED JANUARY 2016 5 Pin Configuration and Functions TO Metal Can Package 3-Pin Package Number NDT0003A Bottom View TO-220 Plastic Package Package Number NDE0003B Front View SOT-223 3-Lead Package Marked N02A Front View Pin Functions PIN NAME TO-220 TO SOT-223 I/O DESCRIPTION ADJ 1 1 1 -- VIN 2, TAB 3, CASE 2, 4 I Input voltage pin for the regulator 3 2 3 O Output voltage pin for the regulator VOUT Adjust pin Submit Documentation Feedback Copyright (c) 1999-2016, Texas Instruments Incorporated Product Folder Links: LM137 LM337-N 3 LM137, LM337-N SNVS778E - MAY 1999 - REVISED JANUARY 2016 www.ti.com 6 Specifications 6.1 Absolute Maximum Ratings MIN Power dissipation MAX UNIT Internally Limited Input-output voltage differential LM137 Operating junction temperature -0.3 40 -55 150 LM337-N LM337I Storage temperature, Tstg 0 125 -40 125 -65 150 V C C 6.2 ESD Ratings V(ESD) (1) Electrostatic discharge Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001 (1) VALUE UNIT 2000 V JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. Pins listed as 2000 V may actually have higher performance. 6.3 Recommended Operating Conditions over operating free-air temperature range (unless otherwise noted) LM137 Operating junction temperature LM337-N LM337I MIN MAX -55 150 0 125 -40 125 UNIT C 6.4 Thermal Information LM137 THERMAL METRIC (1) RJA NDT (TO) NDT (TO) DCY (SOT-223) NDE OR NDG (TO-220) 3 PINS 3 PINS 3 PINS 3 PINS 58.3 22.9 C/W 12 36.6 15.7 C/W RJB Junction-to-board thermal resistance -- -- 7.2 4.1 C/W JT Junction-to-top characterization parameter -- -- 1.3 2.4 C/W JB Junction-to-board characterization parameter -- -- 7 4.1 C/W RJC(bot) Junction-to-case (bottom) thermal resistance -- -- -- 1 C/W 4 140 (2) 12 (2) 140 (2) UNIT RJC(top) Junction-to-case (top) thermal resistance (1) Junction-to-ambient thermal resistance LM337-N For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953. No heat sink. Submit Documentation Feedback Copyright (c) 1999-2016, Texas Instruments Incorporated Product Folder Links: LM137 LM337-N LM137, LM337-N www.ti.com SNVS778E - MAY 1999 - REVISED JANUARY 2016 6.5 Electrical Characteristics Unless otherwise specified, these specifications apply -55C Tj 150C for the LM137, 0C Tj 125C for the LM337-N; VIN - VOUT = 5 V; and IOUT = 0.1 A for the TO package and IOUT = 0.5 A for the SOT-223 and TO-220 packages. Although power dissipation is internally limited, these specifications are applicable for power dissipations of 2 W for the TO and SOT223, and 20 W for the TO-220. IMAX is 1.5 A for the SOT-223 and TO-220 packages, and 0.2 A for the TO package. PARAMETER LM137 TEST CONDITIONS MIN LM337-N TYP MAX 0.01 0.02 MIN TYP MAX 0.01 0.04 UNIT Line regulation TJ = 25C, 3 V |VIN - VOUT| 40 V (1) IL = 10 mA Load regulation TJ = 25C, 10 mA IOUT IMAX 0.3% 0.5% 0.3% 1% Thermal regulation TJ = 25C, 10-ms Pulse 0.002 0.02 0.003 0.04 %/W 65 100 65 100 A 2 5 2 5 A -1.225 -1.25 -1.275 -1.213 -1.25 -1.287 V -1.2 -1.25 -1.3 -1.2 -1.25 -1.3 V 0.02 0.05 0.02 0.07 %/V 0.3% 1% 0.3% 1.5% Adjustment pin current Adjustment pin current charge 10 mA IL IMAX 3 V |VIN - VOUT| 40 V, TA = 25C Reference voltage 3 V |VIN - VOUT| 40 V, (2) 10 mA IOUT IMAX, P PMAX Line regulation 3 V |VIN - VOUT| 40 V, Load regulation 10 mA IOUT IMAX, Temperature stability TMIN Tj TMAX Minimum load current (1) 0.6% 2.5 5 2.5 10 mA |VIN - VOUT| 10 V 1.2 3 1.5 6 mA |VIN - VOUT| = 40 V, TJ = 25C Long-term stability (1) (2) 0.6% |VIN - VOUT| 40 V Current limit Ripple rejection ratio (2) -55C TJ 150C (1) |VIN - VOUT| 15 V RMS output noise, % of VOUT TJ = 25C %/V K, DCY and NDE package 1.5 2.2 3.5 1.5 2.2 3.7 A NDT package 1.8 0.5 0.8 1.9 A 0.4 A 0.17 A 0.5 0.8 K, DCY and NDE package 0.24 0.4 0.15 NDT package 0.15 0.17 0.1 Tj = 25C, 10 Hz f 10 kHz 0.003% VOUT = -10 V, f = 120 Hz CADJ = 10 F 0.003% 60 66 TJ = 125C, 1000 Hours 60 77 0.3% 66 1% dB 77 0.3% dB 1% Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are covered under the specification for thermal regulation. Load regulation is measured on the output pin at a point in. below the base of the TO packages. Selected devices with tightened tolerance reference voltage available. Submit Documentation Feedback Copyright (c) 1999-2016, Texas Instruments Incorporated Product Folder Links: LM137 LM337-N 5 LM137, LM337-N SNVS778E - MAY 1999 - REVISED JANUARY 2016 www.ti.com 6.6 Typical Characteristics (NDE Package) 6 Figure 1. Load Regulation Figure 2. Current Limit Figure 3. Adjustment Current Figure 4. Dropout Voltage Figure 5. Temperature Stability Figure 6. Minimum Operating Current Submit Documentation Feedback Copyright (c) 1999-2016, Texas Instruments Incorporated Product Folder Links: LM137 LM337-N LM137, LM337-N www.ti.com SNVS778E - MAY 1999 - REVISED JANUARY 2016 Typical Characteristics (continued) (NDE Package) Figure 7. Ripple Rejection Figure 8. Ripple Rejection Figure 9. Ripple Rejection Figure 10. Output Impedance Figure 11. Line Transient Response Figure 12. Load Transient Response Submit Documentation Feedback Copyright (c) 1999-2016, Texas Instruments Incorporated Product Folder Links: LM137 LM337-N 7 LM137, LM337-N SNVS778E - MAY 1999 - REVISED JANUARY 2016 www.ti.com 7 Detailed Description 7.1 Overview In operation, the LM137 and LM337-N develops a nominal -1.25-V reference voltage between the output and adjustment terminal. The reference voltage is impressed across program resistor R1 (120 for example) and, because the voltage is constant, a constant current then flows through the output set resistor R2, giving an output voltage calculated by Equation 1. R2 o ae -VOUT = -1.25V c 1 + / + (-I ADJ R 2 ) e 120 o (1) 7.2 Functional Block Diagram 7.3 Feature Description 7.3.1 Thermal Regulation When power is dissipated in an IC, a temperature gradient occurs across the IC chip affecting the individual IC circuit components. With an IC regulator, this gradient can be especially severe because power dissipation is large. Thermal regulation is the effect of these temperature gradients on output voltage (in percentage output change) per Watt of power change in a specified time. Thermal regulation error is independent of electrical regulation or temperature coefficient, and occurs within 5 ms to 50 ms after a change in power dissipation. Thermal regulation depends on IC layout as well as electrical design. The thermal regulation of a voltage regulator is defined as the percentage change of VOUT, per Watt, within the first 10 ms after a step of power is applied. The LM137 device's specification is 0.02%/W, maximum. 8 Submit Documentation Feedback Copyright (c) 1999-2016, Texas Instruments Incorporated Product Folder Links: LM137 LM337-N LM137, LM337-N www.ti.com SNVS778E - MAY 1999 - REVISED JANUARY 2016 Feature Description (continued) LM137 VOUT = -10 V VIN - VOUT = -40 V IIL = 0 A 0.25 A 0 A Vertical sensitivity, 5 mV/div Figure 13. Output Drift (10W Pulse for 10ms) In Figure 13, a typical LM137 device's output drifts only 3 mV (or 0.03% of VOUT = -10 V) when a 10-W pulse is applied for 10 ms. This performance is thus well inside the specification limit of 0.02%/W x 10 W = 0.2% maximum. When the 10-W pulse is ended, the thermal regulation again shows a 3-mV step at the LM137 chip cools off. NOTE The load regulation error of about 8 mV (0.08%) is additional to the thermal regulation error. In Figure 14, when the 10-W pulse is applied for 100 ms, the output drifts only slightly beyond the drift in the first 10 ms, and the thermal error stays well within 0.1% (10 mV). Submit Documentation Feedback Copyright (c) 1999-2016, Texas Instruments Incorporated Product Folder Links: LM137 LM337-N 9 LM137, LM337-N SNVS778E - MAY 1999 - REVISED JANUARY 2016 www.ti.com Feature Description (continued) LM137 VOUT = -10 V VIN - VOUT = -40 V IL = 0 A 0.25 A 0 A Horizontal sensitivity, 20 ms/div Figure 14. Output Drift (10-W Pulse for 100 ms) 7.4 Device Functional Modes 7.4.1 Protection Diodes When external capacitors are used with any IC regulator, it is sometimes necessary to add protection diodes to prevent the capacitors from discharging through low current points into the regulator. Most 10-F capacitors have low enough internal series resistance to deliver 20-A spikes when shorted. Although the surge is short, there is enough energy to damage parts of the IC. When an output capacitor is connected to a negative output regulator and the input is shorted, the output capacitor pulls current out of the output of the regulator. The current depends on the value of the capacitor, the output voltage of the regulator, and the rate at which VIN is shorted to ground. The bypass capacitor on the adjustment terminal can discharge through a low current junction. Discharge occurs when either the input, or the output, is shorted. Figure 15 shows the placement of the protection diodes. 10 Submit Documentation Feedback Copyright (c) 1999-2016, Texas Instruments Incorporated Product Folder Links: LM137 LM337-N LM137, LM337-N www.ti.com SNVS778E - MAY 1999 - REVISED JANUARY 2016 Device Functional Modes (continued) *When CL is larger than 20 F, D1 protects the LM137 in case the input supply is shorted **When C2 is larger than 10 F and -VOUT is larger than -25V, D2 protects the LM137 in case the output is shorted Figure 15. Regulator With Protection Diodes Submit Documentation Feedback Copyright (c) 1999-2016, Texas Instruments Incorporated Product Folder Links: LM137 LM337-N 11 LM137, LM337-N SNVS778E - MAY 1999 - REVISED JANUARY 2016 www.ti.com 8 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. 8.1 Application Information The LM137 and LM337-N are versatile, high performance, negative output linear regulators with high accuracy and a wide temperature range. An output capacitor can be added to further improve transient response, and the ADJ pin can be bypassed to achieve very high ripple-rejection ratios. The device's functionality can be utilized in many different applications that require negative voltage supplies, such as bipolar amplifiers, operational amplifiers, and constant current regulators. 8.2 Typical Applications 8.2.1 Adjustable Negative Voltage Regulator The LM137 and LM337-N can be used as a simple, negative output regulator to enable a variety of output voltages needed for demanding applications. By using an adjustable R2 resistor, a variety of negative output voltages can be made possible as shown in Figure 16. Full output current not available at high input-output voltages C1 = 1-F solid tantalum or 10-F aluminum electrolytic required for stability *C2 = 1-F solid tantalum is required only if regulator is more than 4 inches from power-supply filter capacitor Output capacitors in the range of 1 F to 1000 F of aluminum or tantalum electrolytic are commonly used to provide improved output impedance and rejection of transients Figure 16. Adjustable Negative Voltage Regulator R2 o ae -VOUT = -1.25V c 1 + / + (-I ADJ R 2 ) e 120 o (2) 8.2.1.1 Design Requirements The device component count is very minimal, employing two resistors as part of a voltage divider circuit and an output capacitor for load regulation. An input capacitor is needed if the device is more than 4 inches from the filter capacitors. 8.2.1.2 Detailed Design Procedure The output voltage is set based on the selection of the two resistors, R1 and R2, as shown in Figure 16. 12 Submit Documentation Feedback Copyright (c) 1999-2016, Texas Instruments Incorporated Product Folder Links: LM137 LM337-N LM137, LM337-N www.ti.com SNVS778E - MAY 1999 - REVISED JANUARY 2016 Typical Applications (continued) 8.2.1.3 Application Curve As shown in Figure 17, the maximum output current capability is limited by the input-output voltage differential, package type, and junction temperature. Figure 17. Current Limit 8.2.2 Adjustable Lab Voltage Regulator The LM337-N can be combined with a positive regulator such as the LM317-N to provide both a positive and negative voltage rail. This can be useful in applications that use bi-directional amplifiers and dual-supply operational amplifiers. Full output current not available at high input-output voltages *The 10 F capacitors are optional to improve ripple rejection Submit Documentation Feedback Copyright (c) 1999-2016, Texas Instruments Incorporated Product Folder Links: LM137 LM337-N 13 LM137, LM337-N SNVS778E - MAY 1999 - REVISED JANUARY 2016 www.ti.com Typical Applications (continued) 8.2.3 Current Regulator A simple, fixed current regulator can be made by placing a resistor between the VOUT and ADJ pins of the LM137. By regulating a constant 1.25 V between these two terminals, a constant current can be delivered. 1.250V R1 *0.8 W R1 120 W IOUT = (3) (4) 8.2.4 -5.2-V Regulator with Electronic Shutdown The LM337-N can be used with a PNP transistor to provide shutdown control from a TTL control signal. The PNP can short or open the ADJ pin to GND. When ADJ is shorted to GND by the PNP, the output is -1.3V. When ADJ is disconnected from GND by the PNP, then the LM337-N outputs the programmed output of -5.2 V. Minimum output -1.3 V when control input is low 14 Submit Documentation Feedback Copyright (c) 1999-2016, Texas Instruments Incorporated Product Folder Links: LM137 LM337-N LM137, LM337-N www.ti.com SNVS778E - MAY 1999 - REVISED JANUARY 2016 Typical Applications (continued) 8.2.5 High Stability -10-V Regulator Using a high stability shunt voltage reference in the feedback path, such as the LM329, provides damping necessary for a stable, low noise output. Submit Documentation Feedback Copyright (c) 1999-2016, Texas Instruments Incorporated Product Folder Links: LM137 LM337-N 15 LM137, LM337-N SNVS778E - MAY 1999 - REVISED JANUARY 2016 www.ti.com 9 Power Supply Recommendations The input supply to the LM137 and LM337-N must be kept at a voltage level such that its maximum input to output differential voltage rating is not exceeded. The minimum dropout voltage must also be met with extra headroom when possible to keep the LM137 and LM337-N in regulation. TI recommends an input capacitor, especially when the input pin is placed more than 4 inches away from the power-supply filter capacitor. 10 Layout 10.1 Layout Guidelines Some layout guidelines must be followed to ensure proper regulation of the output voltage with minimum noise. Traces carrying the load current must be wide to reduce the amount of parasitic trace inductance and the feedback loop from VOUT to ADJ must be kept as short as possible. To improve PSRR, a bypass capacitor can be placed at the ADJ pin and must be placed as close as possible to the IC. In cases when VIN shorts to ground, an external diode must be placed from VIN to VOUT to divert the surge current into the output capacitor and protect the IC. Similarly, in cases when a large bypass capacitor is placed at the ADJ pin and VOUT shorts to ground, an external diode must be placed from VOUT to ADJ to provide a path for the bypass capacitor to discharge. These diodes must be placed close to the corresponding IC pins to increase their effectiveness. 10.2 Layout Example Figure 18. Layout Example (SOT-223) 16 Submit Documentation Feedback Copyright (c) 1999-2016, Texas Instruments Incorporated Product Folder Links: LM137 LM337-N LM137, LM337-N www.ti.com SNVS778E - MAY 1999 - REVISED JANUARY 2016 10.3 Thermal Considerations 10.3.1 Heatsinking SOT-223 Package Parts The SOT-223 DCY packages use a copper plane on the PCB and the PCB itself as a heatsink. To optimize the heat sinking ability of the plane and PCB, solder the tab of the package to the plane. Figure 19 and Figure 20 show the information for the SOT-223 package. Figure 20 assumes a (J-A) of 75C/W for 1 ounce copper and 51C/W for 2 ounce copper and a maximum junction temperature of 125C. Figure 19. (J-A) vs Copper (2 ounce) Area for the SOT-223 Package Figure 20. Maximum Power Dissipation vs TAMB for the SOT-223 Package See AN-1028, SNVA036, for power enhancement techniques to be used with the SOT-223 package. Submit Documentation Feedback Copyright (c) 1999-2016, Texas Instruments Incorporated Product Folder Links: LM137 LM337-N 17 LM137, LM337-N SNVS778E - MAY 1999 - REVISED JANUARY 2016 www.ti.com 11 Device and Documentation Support 11.1 Documentation Support 11.1.1 Related Documentation For related documentation see the following: AN-1028, SNVA036 11.2 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 1. Related Links PARTS PRODUCT FOLDER SAMPLE & BUY TECHNICAL DOCUMENTS TOOLS & SOFTWARE SUPPORT & COMMUNITY LM137 Click here Click here Click here Click here Click here LM337-N Click here Click here Click here Click here Click here 11.3 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. 11.4 Trademarks E2E is a trademark of Texas Instruments. All other trademarks are the property of their respective owners. 11.5 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. 11.6 Glossary SLYZ022 -- TI Glossary. This glossary lists and explains terms, acronyms, and definitions. 12 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. 18 Submit Documentation Feedback Copyright (c) 1999-2016, Texas Instruments Incorporated Product Folder Links: LM137 LM337-N PACKAGE OPTION ADDENDUM www.ti.com 29-Jan-2021 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (C) Device Marking (3) (4/5) (6) LM137H ACTIVE TO NDT 3 500 RoHS & Green AU Level-1-NA-UNLIM -55 to 150 ( LM137HP+, LM137H P+) LM137H/NOPB ACTIVE TO NDT 3 500 RoHS & Green AU Level-1-NA-UNLIM -55 to 150 ( LM137HP+, LM137H P+) LM337IMP NRND SOT-223 DCY 4 1000 Non-RoHS & Green Call TI Call TI -40 to 125 N02A LM337IMP/NOPB ACTIVE SOT-223 DCY 4 1000 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 N02A LM337IMPX NRND SOT-223 DCY 4 2000 Non-RoHS & Green Call TI Call TI -40 to 125 N02A LM337IMPX/NOPB ACTIVE SOT-223 DCY 4 2000 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 N02A LM337T NRND TO-220 NDE 3 45 Non-RoHS & Green Call TI Call TI 0 to 125 LM337T P+ LM337T/LF01 ACTIVE TO-220 NDG 3 45 RoHS-Exempt & Green SN Level-3-245C-168 HR 0 to 125 LM337T P+ LM337T/NOPB ACTIVE TO-220 NDE 3 45 RoHS-Exempt & Green SN Level-1-NA-UNLIM 0 to 125 LM337T P+ (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. (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. Addendum-Page 1 Samples PACKAGE OPTION ADDENDUM www.ti.com (4) 29-Jan-2021 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 finish/Ball material - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead finish/Ball material 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. Addendum-Page 2 PACKAGE MATERIALS INFORMATION www.ti.com 29-Sep-2019 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 LM337IMP SOT-223 DCY 4 1000 330.0 16.4 7.0 7.5 2.2 12.0 16.0 Q3 LM337IMP/NOPB SOT-223 DCY 4 1000 330.0 LM337IMPX SOT-223 DCY 4 2000 330.0 16.4 7.0 7.5 2.2 12.0 16.0 Q3 16.4 7.0 7.5 2.2 12.0 16.0 LM337IMPX/NOPB SOT-223 DCY 4 2000 330.0 Q3 16.4 7.0 7.5 2.2 12.0 16.0 Q3 Pack Materials-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 29-Sep-2019 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LM337IMP SOT-223 DCY 4 1000 367.0 367.0 35.0 LM337IMP/NOPB SOT-223 DCY 4 1000 367.0 367.0 35.0 LM337IMPX SOT-223 DCY 4 2000 367.0 367.0 35.0 LM337IMPX/NOPB SOT-223 DCY 4 2000 367.0 367.0 35.0 Pack Materials-Page 2 MECHANICAL DATA NDE0003B www.ti.com MECHANICAL DATA MPDS094A - APRIL 2001 - REVISED JUNE 2002 DCY (R-PDSO-G4) PLASTIC SMALL-OUTLINE 6,70 (0.264) 6,30 (0.248) 3,10 (0.122) 2,90 (0.114) 4 0,10 (0.004) M 3,70 (0.146) 3,30 (0.130) 7,30 (0.287) 6,70 (0.264) Gauge Plane 1 2 0,84 (0.033) 0,66 (0.026) 2,30 (0.091) 4,60 (0.181) 1,80 (0.071) MAX 3 0-10 0,10 (0.004) M 0,25 (0.010) 0,75 (0.030) MIN 1,70 (0.067) 1,50 (0.059) 0,35 (0.014) 0,23 (0.009) Seating Plane 0,08 (0.003) 0,10 (0.0040) 0,02 (0.0008) 4202506/B 06/2002 NOTES: A. B. C. D. All linear dimensions are in millimeters (inches). This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion. Falls within JEDEC TO-261 Variation AA. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 MECHANICAL DATA NDG0003F T03F (Rev B) www.ti.com MECHANICAL DATA NDT0003A H03A (Rev D) 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. 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