AP1121

Dual 1A Low Dropout Positive Regulator

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. 0.0 Mar. 4, 2004

1/5

Features

•

1.3V maximum dropout at full load current

•

Fast transient response

•

Output current limiting for each channel.

•

Built-in thermal shutdown each channel.

•

Good noise rejection

•

Dual output ch1=3.3V, ch2=2.5V

(1.8V for B version)

•

Pb-Free Packages: SOP-8L

Applications

•

PC peripheral

•

Communication

General Description

AP1121 series are low dropout positive regulator

with minimum of 1A output current capability. The

product

is

specifically

designed

to

provide

well-regulated supply for low voltage IC applications

such as high-speed bus termination and low current

3.3V/2.5V or 3.3V/1.8V logic supply. AP1121 series

are guaranteed to have <1.3V dropout at full load

current making it ideal to provide well regulated

outputs dual channels with up to 18V input supply.

Connection Diagram

AP1121

7

5

4

3

2

1

6

GND

V

IN

V

OUT1

V

IN

(Top View)

8

V

OUT2

GND

GND

GND

Pin Descriptions

NAME

FUNCTION

GND

Ground

2.5V/1.8V

The output of the regulator. A

minimum of 10uF capacitor

must be connected from this

pin to ground to insure

stability.

The input pin of regulator.

Typically a large storage

capacitor is connected from

this pin to ground.

Ordering Information

AP 1121 X X X

Package

Vout

S : SOP-8L

Packing

Blank : Tube

A

: Taping

A : CH1=3.3V

CH2=2.5V

B : CH1=3.3V

CH2=1.8V