ZHT431

ZHT431

Document number: DS32157 Rev. 11 - 2

1 of 8

www.diodes.com

November 2010

© Diodes Incorporated

A Product Line of

Diodes Incorporated

ADJUSTABLE PRECISION ZENER SHUNT REGULATOR

Description

The ZHT431 is a three terminal adjustable shunt regulator

offering excellent temperature stability and output current

handling capability up to 100mA. The device offers

extended operating temperature range working from -55 to

+125°C.

The output voltage may be set to any chosen voltage

between 2.5 and 20 volts by selection of two external

divider resistors.

The devices can be used as a replacement for zener

diodes in many applications requiring an improvement in

zener performance.

Pin Assignments

Features

•

Surface mount SOT23 package

•

0.5%, 1% and 2% tolerance

•

Maximum temperature coefficient 67ppm/°C

•

Temperature compensated for operation over the full

temperature range

•

Programmable output voltage

•

50

μA to 100mA current sink capability

•

Low output noise

•

Available in “Green” Molding Compound (See page 7)

•

Wide temperature range -55 to +125°C

Applications

•

Series and shunt regulator

•

Voltage monitor

•

Over voltage / under voltage protection

•

Switch mode power supplies

Typical Application Circuit

GND

(Top View)

SOT23