Adjustable Precision Shunt Regulator

AP432/AP432A

This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of

this product. No rights under any patent accompany the sale of the product.

Rev.1.0 May.7, 2004

1/16

Features

- Precision reference voltage

AP432 : 1.24V ± 1%

AP432A : 1.24V ± 0.5%

- Sink current capability: 200mA.

- Minimum cathode current for regulation: 150µA

- Equivalent full-range temp coefficient: 30 ppm/

- Fast turn-on Response.

- Low dynamic output impedance: 0.2Ω

- Programmable output voltage to 20v

- Low output noise

- Packages: SOT89, SOT23, SOT25, SOP8 and

TO92

General Description

The

AP432/432A

are

3-terminal

adjustable

precision shunt regulators with guaranteed stable

temperature

over

the

applicable

extended

commercial temperature range. The output voltage

to 20V merely by selecting two external resistors

that act as a voltage divider network. These devices

have a typical output impedance of 0.2Ω. Active

output circuitry provides very sharp turn-on

characteristics, making these devices excellent

improved replacements for Zener diodes in many

applications.

The precise +/- 1% reference voltage tolerance of

the AP432/432A make it possible in many

applications to avoid the use of a variable resistor,

consequently saving cost and eliminating drift and

reliability problems associated with it.

Ordering Information

A P 4 3 2 X X X X X

Package

Packing

Blank : Tube or bulk

A

: Taping

Reference Voltage

Operating Temp. Range

Blank : SOP-8L

Y

: SOT89-3L

V

: TO92-3L

W

: SOT23-3L

R

: SOT23-3L

Q

: SOT25

Lead Free

Blank : Normal

L : Lead Free Package

Tolerance:

Blank : 1.24V(+/-) 1%

A

: 1.24V(+/-) 0.5%

Typical Application Circuit

+

+

R2

R1

Precision Regulator

AP432