©2010 Fairchild Semiconductor Corporation

www.fairchildsemi.com

Rev. 1.0.3

Features

• Output Current in Excess of 1.5A

• Output Voltage Adjustable Between -1.2V and -37V

• Internal Thermal Overload Protection

• Internal Short Circuit Current Limiting

• Output Transistor Safe Area Compensation

• Floating Operation for High Voltage Applications

• Standard 3-Pin TO-220 Package

Description

The LM337 is a 3-terminal negative adjustable regulator. It

supplies in excess of 1.5A over an output voltage range of

-1.2V to -37V. This regulator requires only two external

resistor to set the output voltage. Included on the chip are

current limiting, thermal overload protection and safe area

compensation.

TO-220

1. Adj 2. Input 3. Output

1

Internal Block Diagram

1

Voltage

Reference

-

+

2

Protection

Circuitry

3

Output

Input

Vadj

LM337

3-Terminal 1.5A Negative Adjustable Regulator