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LM137JAN

ACTIVE

Military Grade 1.5A Adjustable Output Negative Voltage Regulator / LDO

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Data sheet

LM137JAN

ACTIVE
Data sheet Order now

Product details

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 (µVrms) 1110 Iq (typ) (mA) 0.065 Thermal resistance θJA (°C/W) 137 Rating Military Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Accuracy (%) 4 PSRR at 100 KHz (dB) 30 Dropout voltage (Vdo) (typ) (mV) 3000 Operating temperature range (°C) -55 to 150
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 (µVrms) 1110 Iq (typ) (mA) 0.065 Thermal resistance θJA (°C/W) 137 Rating Military Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Accuracy (%) 4 PSRR at 100 KHz (dB) 30 Dropout voltage (Vdo) (typ) (mV) 3000 Operating temperature range (°C) -55 to 150
TO-CAN (NDT) 3 91.6742 mm² 10.03 x 9.14
  • 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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  • 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

All trademarks are the property of their respective owners.

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.

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

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Type Title Date
* Data sheet LM137JAN 3-Terminal Adjustable Negative Regulators datasheet (Rev. B) 20 Mar 2013
Application note A Topical Index of TI LDO Application Notes (Rev. F) 27 Jun 2019
Application note AN-103 LM340 Series Three Terminal Positive Regulators (Rev. A) 06 May 2013
Application note AN-1148 Linear Regulators: Theory of Operation and Compensation (Rev. B) 06 May 2013
Application note Method For Cal Output Voltage Tolerances in Adj Regs (Rev. A) 05 May 2013
Application note Packaging Limits Range of Linear Regulators 08 May 2010
Application note Digital Designer's Guide to Linear Voltage Regulators & Thermal Mgmt (LDO) (Rev. A) 04 Jun 2008
Application note Understanding the Terms and Definitions of LDO Voltage Regulators 21 Oct 1999

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