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Product details

Parameters

Output options Adjustable Output, Negative Output Iout (Max) (A) 1.5 Vin (Max) (V) -4.2 Vin (Min) (V) -40 Vout (Max) (V) -1.2 Vout (Min) (V) -37 Fixed output options (V) 0 Noise (uVrms) 1110 Iq (Typ) (mA) 0.065 Thermal resistance θJA (°C/W) 137 Load capacitance (Min) (µF) 1 Rating Space Regulated outputs (#) 1 Features Accuracy (%) 4 PSRR @ 100 KHz (dB) 30 Dropout voltage (Vdo) (Typ) (mV) 3000 Operating temperature range (C) -55 to 150 Radiation, SEL (MeV.cm2/mg) Bipolar open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

TO-CAN (K) 2 989 mm² 38.938 x 25.4 open-in-new Find other Linear regulators (LDO)

Features

  • Output Voltage Adjustable from −37V to −1.2V
  • 1.5A Output Current Specified, −55°C to +150°C
  • Line Regulation Typically 0.01%/V
  • Load Regulation Typically 0.3%
  • Excellent Thermal Regulation, 0.002%/W
  • 77 dB Ripple Rejection
  • Excellent Rejection of Thermal Transients
  • 50 ppm/°C Temperature Coefficient
  • Temperature-independent Current Limit
  • Internal Thermal Overload Protection
  • Standard 3-lead Transistor Package
  • Output is Short Circuit Protected

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Description

The LM137 are adjustable 3-terminal negative voltage regulators capable of supplying in excess of −1.5A over an output voltage range of −37V to −1.2V. These regulators are exceptionally easy to apply, requiring only 2 external resistors to set the output voltage and 1 output capacitor for frequency compensation. The circuit design has been optimized for excellent regulation and low thermal transients. Further, the LM137 series features internal current limiting, thermal shutdown and safe-area compensation, making them virtually blowout-proof against overloads.

The LM137 serves a wide variety of applications including local on-card regulation, programmable-output voltage regulation or precision current regulation. The LM137 are ideal complements to the LM117 adjustable positive regulators.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet LM137JAN 3-Terminal Adjustable Negative Regulators datasheet (Rev. B) Mar. 20, 2013
* SMD LM137JAN-SP SMD M38510-118B Aug. 10, 2020
Application note DLA Standard Microcircuit Drawings (SMD) and JAN Part Numbers Primer Aug. 21, 2020
Application note Heavy Ion Orbital Environment Single-Event Effects Estimations May 18, 2020
Application note Hermetic Package Reflow Profiles, Termination Finishes, and Lead Trim and Form May 18, 2020
Application note Single-Event Effects Confidence Interval Calculations Jan. 14, 2020
More literature TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing Jun. 17, 2019
E-book Preview: Radiation Handbook for Electronics (Rev. A) Jun. 07, 2019
E-book Radiation Handbook for Electronics (Rev. A) May 21, 2019
Selection guide TI Space Products (Rev. G) May 15, 2019
Technical articles LDO basics: capacitor vs. capacitance Aug. 01, 2018
Application note Use of an LDO as a Load Switch for Space Applications Aug. 01, 2018
Technical articles LDO Basics: Preventing reverse current Jul. 25, 2018
Technical articles LDO basics: introduction to quiescent current Jun. 20, 2018
Technical articles LDO basics: noise – part 1 Jun. 14, 2017

Design & development

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TO (K) 2 View options

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