1.25 V

IADJ

INPUT

OUTPUT

ADJUST

Over temp

& over

current

protection

+

+

LM237, LM337

www.ti.com

SLVS047L – NOVEMBER 1981 – REVISED JANUARY 2015

8 Detailed Description

8.1 Overview

The LMx37 devices are adjustable 3-terminal negative-voltage regulators capable of supplying in excess of –1.5

A over an output voltage range of –1.2 V to –37 V. They are exceptionally easy to use, requiring only two

external resistors to set the output voltage and one output capacitor for frequency compensation. The current

design is optimized for excellent regulation and low thermal transients. In addition, LM237 and LM337 feature

internal current limiting, thermal shutdown, and safe-area compensation, making them virtually immune to failure

by overloads. The LMx37 devices serve a wide variety of applications, including local on-card regulation,

programmable output-voltage regulation, and precision current regulation.

8.2 Functional Block Diagram

Copyright © 1981–2015, Texas Instruments Incorporated

Submit Documentation Feedback

7

Product Folder Links: LM237 LM337