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KA337 / LM337 Rev. 1.1.1

September 2014

KA337 / LM337

3-Terminal 1.5 A Negative Adjustable Regulator

Features

• Output-Current in Excess of 1.5 A

• Output-Adjustable Between -1.25 V and -37 V

• 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

Ordering Information

Block Diagram

Figure 1. Block Diagram

Product Number

Package

Packing Method

Operating Temperature

KA337TU

TO-220 (Dual Gauge)

Rail

0

°C to +125°C

LM337T

TO-220 (Single Gauge)

1

Voltage

Reference

-

+

2

Protection

Circuitry

3

Output

Input

Description

The KA337 / LM337 are 3-terminal negative adjustable

regulators. They supply in excess of 1.5 A over an output

voltage range of -1.25 V to -37 V. These regulators

require only two external resistors to set the output volt-

age and employ current limiting, thermal overload protec-

tion, and safe area compensation.

TO-220

1. Adj 2. Input 3. Output

1

Input