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LM137, LM337-N

www.ti.com

SNVS778D –MAY 1999–REVISED APRIL 2013

LM137/LM337-N 3-Terminal Adjustable Negative Regulators

Check for Samples: LM137, LM337-N

FEATURES

DESCRIPTION

The LM137/LM337-N are adjustable 3-terminal

• Output Voltage Adjustable from −1.2V to −37V

negative voltage regulators capable of supplying in

• 1.5A Output Current Specified, −55°C to

excess of −1.5A over an output voltage range of

+150°C

−1.2V to −37V. These regulators are exceptionally

• Line Regulation Typically 0.01%/V

easy to apply, requiring only 2 external resistors to

set the output voltage and 1 output capacitor for

• Load Regulation Typically 0.3%

frequency compensation. The circuit design has been

• Excellent Thermal Regulation, 0.002%/W

optimized for excellent regulation and low thermal

• 77 dB Ripple Rejection

transients. Further, the LM137 series features internal

current limiting, thermal shutdown and safe-area

• Excellent Rejection of Thermal Transients

compensation, making them virtually blowout-proof

• 50 ppm/°C Temperature Coefficient

against overloads.

• Temperature-independent Current Limit

The LM137/LM337-N serve a wide variety of

• Internal Thermal Overload Protection

applications including local on-card regulation,

• P

Product Enhancement Tested

programmable-output voltage regulation or precision

current regulation. The LM137/LM337-N are ideal

• Standard 3-lead Transistor Package

complements to the LM117/LM317 adjustable

• Output is Short Circuit Protected

positive regulators.

Table 1. LM137 Series Packages and Power

Capability

Device Package Rated Power Design

Dissipation Load

Current

LM137/337-N TO-3 (K) 20W 1.5A

TO (NDT) 2W 0.5A

LM337-N TO-220 (NDE) 15W 1.5A

LM337-N SOT-223 (DCY) 2W 1A

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (22 pages)

PAGE 1
LM137, LM337-N www.ti.com SNVS778D – MAY 1999 – REVISED APRIL 2013 LM137/LM337-N 3-Terminal Adjustable Negative Regulators Check for Samples: LM137, LM337-N FEATURES 1 • • 2 • • • • • • • • • • • Output Voltage Adjustable from −1.2V to −37V 1.5A Output Current Specified, −55°C to +150°C Line Regulation Typically 0.01%/V Load Regulation Typically 0.3% Excellent Thermal Regulation, 0.
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LM137, LM337-N SNVS778D – MAY 1999 – REVISED APRIL 2013 www.ti.
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LM137, LM337-N www.ti.com SNVS778D – MAY 1999 – REVISED APRIL 2013 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.
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LM137, LM337-N SNVS778D – MAY 1999 – REVISED APRIL 2013 www.ti.com ELECTRICAL CHARACTERISTICS(1) (continued) Parameter Current Limit Conditions LM137 LM337 Units Min Typ Max Min Typ Max K, DCY and NDE Package 1.5 2.2 3.5 1.5 2.2 3.7 A NDT Package 0.5 0.8 1.8 0.5 0.8 1.9 A K, DCY and NDE Package 0.24 0.4 0.15 0.4 NDT Package 0.15 0.17 0.
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LM137, LM337-N www.ti.com SNVS778D – MAY 1999 – REVISED APRIL 2013 SCHEMATIC DIAGRAM 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 since 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.
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LM137, LM337-N SNVS778D – MAY 1999 – REVISED APRIL 2013 www.ti.com LM137, VOUT = −10V VIN − VOUT = −40V IIL = 0A → 0.25A → 0A Vertical sensitivity, 5 mV/div Figure 3. In Figure 3, a typical LM137's output drifts only 3 mV (or 0.03% of VOUT = −10V) when a 10W pulse is applied for 10 ms. This performance is thus well inside the specification limit of 0.02%/W × 10W = 0.2% max. When the 10W pulse is ended, the thermal regulation again shows a 3 mV step at the LM137 chip cools off.
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LM137, LM337-N www.ti.com SNVS778D – MAY 1999 – REVISED APRIL 2013 Connection Diagrams Case Is Input See STD Mil DWG 5962P99517 for Radiation Tolerant Devices Case is Input Figure 5. TO-3 Metal Can Package Bottom View See Package Number K0002C See Package Number NDS0002A Figure 6. TO Metal Can Package Bottom View See Package Number NDT0003A Figure 7. TO-220 Plastic Package Front View See Package Number NDE0003B Figure 8.
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LM137, LM337-N SNVS778D – MAY 1999 – REVISED APRIL 2013 www.ti.com APPLICATION HINTS When a value for θ(H−A) is found using the equation shown, a heatsink must be selected that has a value that is less than or equal to this number. 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.
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LM137, LM337-N www.ti.com SNVS778D – MAY 1999 – REVISED APRIL 2013 Typical Applications Figure 11. Adjustable Lab Voltage Regulator Full output current not available at high input-output voltages *The 10 μF capacitors are optional to improve ripple rejection Figure 12. Current Regulator Figure 13.
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LM137, LM337-N SNVS778D – MAY 1999 – REVISED APRIL 2013 www.ti.com Figure 14. −5.2V Regulator with Electronic Shutdown* *Minimum output ≃ −1.3V when control input is low Figure 15. Adjustable Current Regulator Figure 16.
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LM137, LM337-N www.ti.com SNVS778D – MAY 1999 – REVISED APRIL 2013 TYPICAL PERFORMANCE CHARACTERISTICS (K Steel and NDE Packages) Load Regulation Current Limit Figure 17. Figure 18. Adjustment Current Dropout Voltage Figure 19. Figure 20. Temperature Stability Minimum Operating Current Figure 21. Figure 22.
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LM137, LM337-N SNVS778D – MAY 1999 – REVISED APRIL 2013 www.ti.com TYPICAL PERFORMANCE CHARACTERISTICS (continued) (K Steel and NDE Packages) 12 Ripple Rejection Ripple Rejection Figure 23. Figure 24. Ripple Rejection Output Impedance Figure 25. Figure 26. Line Transient Response Load Transient Response Figure 27. Figure 28.
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LM137, LM337-N www.ti.com SNVS778D – MAY 1999 – REVISED APRIL 2013 REVISION HISTORY Changes from Revision C (April 2013) to Revision D • Page Changed layout of National Data Sheet to TI format ..........................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 1-Nov-2013 (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.
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PACKAGE MATERIALS INFORMATION www.ti.com 24-Apr-2013 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.
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PACKAGE MATERIALS INFORMATION www.ti.com 24-Apr-2013 *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.
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MECHANICAL DATA NDT0003A H03A (Rev D) www.ti.
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MECHANICAL DATA NDE0003B www.ti.
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MECHANICAL DATA NDG0003F T03F (Rev B) www.ti.
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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.
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