4A Ultra Low Dropout Positive Adjustable or Fixed-mode Regulator

AP1184

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.1.1 Sep 7, 2004

1/11

Feature

•

0.7V maximum dropout voltage at 4A load current

•

Built-in Thermal shutdown

•

Output current limiting

•

Adjustable or fixed output voltage

1.5V, 1.8V, 2.5V, 3.3V, 5.0V

•

Fast transient response

•

Good noise rejection

•

Packages: SOP-7L, TO220-5L and TO263-5L

General Description

AP1184 is a 4A regulator with extremely low

dropout voltage. This product is specifically

designed to provide well regulated supply for

applications requiring 2.8V or lower voltages from

3.3V ATX power supplies where high efficiency of

the switch can be achieved without the cost and

complexity associated with switching regulator. One

such application is the new graphic chipsets that

requires anywhere from 2.4V to 2.7V supply.

Ordering Information

AP1184 X X X X

Low Dropout Regulator

Package

Vout

S7:SOP-7L

K5:TO263-5L

T5:TO220-5L

Blank : Adj

15 = 1.5V

18 = 1.8V

25 = 2.5V

33 = 3.3V

50 = 5.0V

Packing

Blank : Tube

A : Taping

Lead Free

Blank : Normal

L : Lead Free Package

Typical Application

470uF

+

470uF

+

5V

470uF

+

3.3V

2.5V/4A

GND

Vsense

Vin

Vctrl

Vin

Vout

Vout

NC

AP1184-2.5V