3A Bus Terminator Regulator

AP1127

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 Jan 17, 2005

1/4

Features

- Ideal for DDR-I and DDR-II

- Source and sink up to 3A, no heat sink required

- Integrated power MOSFETs

- Programmable output voltage by external resistors

- Output voltage could go down to 0.6V

- Iccq at VCCA less than 500uA

- Current limit protection and Short Circuit

protection

- Thermal shutdown protection

- Shutdown for standby or suspend mode operation

- Minimum external components

- 5-Lead TO252 Pb-free Package

Applications

- Mother Board

- PCI/AGP Graphics

- Game/Play Station

- Set Top Box

- SCSI-III Bus Terminator

- IPC

General Description

The AP1127 is a low cost linear regulator designed

to provide a desired output voltage or termination

voltage for various applications by converting

voltage supplies ranging from 1.6V to 6.0V. The

desired output voltage could be programmable by

two external voltage divider resistors.

The AP1127 is capable of sourcing or sinking up to

voltage to within 2% (DDR-I), 3%(DDR-II) or less.

The AP1127 provides low profile 5-lead TO-252

package to save system space.

Pin Assignment

5

3

1V

IN

V

OUT

GND

TO252-5L

( Top View )

2

4

VCCA

REFEN

Pin Descriptions

Pin

Name

Pin

No.

Descriptions

1

Input Power

2

Output Voltage

GND

3

Ground

REFEN

4

Reference Voltage Input and Chip

Enable

VCCA

5

Voltage Supply for Internal Circuits

Ordering Information

AP1127 X X

Package

D: TO252-5L

Packing

Blank : Tube

A

: Taping