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 Noise (uVrms) 38 Iq (Typ) (mA) 0.065 Thermal resistance θJA (°C/W) 23 Rating Catalog Load capacitance (Min) (µF) 1 Regulated outputs (#) 1 Features Accuracy (%) 2.4 PSRR @ 100 KHz (dB) 35 Dropout voltage (Vdo) (Typ) (mV) 2400 Operating temperature range (C) -40 to 125, 0 to 125
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 Noise (uVrms) 38 Iq (Typ) (mA) 0.065 Thermal resistance θJA (°C/W) 23 Rating Catalog Load capacitance (Min) (µF) 1 Regulated outputs (#) 1 Features Accuracy (%) 2.4 PSRR @ 100 KHz (dB) 35 Dropout voltage (Vdo) (Typ) (mV) 2400 Operating temperature range (C) -40 to 125, 0 to 125
SOT-223 (DCY) 4 46 mm² 6.5 x 7 TO-220 (NDE) 3 47 mm² 10.16 x 4.58 TO-220 (NDG) 3 194 mm² 10.16 x 19.05
  • 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
  • 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

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.

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.

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.

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.

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Technical documentation

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Type Title Date
* Data sheet LM137, LM337-N 3-Terminal Adjustable Negative Regulators datasheet (Rev. E) 13 Jan 2016
User guide LM317A-337N-EVM User's Guide 21 Jan 2016
Application note Method For Cal Output Voltage Tolerances in Adj Regs (Rev. A) 05 May 2013
Application note LB-46 A New Production Technique for Trimming Voltage Regulators 15 May 2004
Application note A New Production Technique for Trimming Voltage Regulators 03 Oct 2002

Design & development

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Evaluation board

LM317A-337N-EVM — 3-pin adjustable regulator evaluation module

The LM317A-337N-EVM demonstrates canonical application of the LM317A adjustable regulator and its negative complement, the LM337-N. The evaluation module (EVM) is assesmbled with the SOT-223 package option for each device, supplying up to 1 A of load current. The EVM is designed for easy (...)

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Simulation model

LM337-N Unencrypted PSpice Transient Model

SNVMAP4.ZIP (1 KB) - PSpice Model
Simulation model

LM337-N PSpice Transient Model

SNVMAP5.ZIP (49 KB) - PSpice Model
Package Pins Download
SOT-223 (DCY) 4 View options
TO-220 (NDE) 3 View options
TO-220 (NDG) 3 View options

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