Precision Adjustable

Shunt Reference

CL431

FEATURES

DESCRIPTION

The CL431 is an adjustable shunt regulator designed to act as

an open-loop error amplifier with a 2.5V temperature

compensated reference. Its highly accurate 0.5% bandgap

reference is perfect for applications requiring stability and

accuracy over temperature and life.

Sharp

turn-on

characteristics

and

a

low

temperature

coefficient make the CL431 an excellent replacement for

many zener diode applications, programmable to any value

greater than 2.5V and up to 36V by using two external

resistors. As a combination error amplifier and reference, it

can be used to manage control loops such as switching power

supplies.

The CL431 can be used as a direct replacement for the

standard TL431.

ORDERING INFORMATION

Part

Package

Temperature Range

CL431LP

TO-92

0 to 105

CL431D

8-Pin Plastic SOIC

0 to 105

CL431S

SOT-89

0 to 105

CORPORATION

CATHODE

ANODE

REFERENCE

TO-92 (LP)

1G-33

SOIC (D)

8

7

6

5

1

2

3

4

REFERENCE

ANODE

ANODE

N/C

CATHODE

ANODE

ANODE

N/C

1G-34

1G-35

CATHODE

ANODE

REFERENCE

SOT-89 (S)

PIN CONFIGURATION (Top View)