AP450

2 Channel Linear Controller with Enable Function

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

1/6

Features

- 2 Channel Linear Control Circuitries

- Operating voltage can be up to 20V

- Under voltage Lockout (UVLO) Protection

- Current Limit

- Over Voltage Protection

- Power Good Function

- 1.25V/0.8V internal voltage reference

- 8-pin PDIP and SOP Pb-Free packages

Applications

- Backlight inverter

- LCD Monitor

- XDROM, XDSL Product

General Description

The AP450 series integrates two channel linear

controllers into a single chip, mainly designs for

power-supply regulator. All the functions included

an on-chip 1.25V/0.8V reference output, error

amplifier, UVLO, current limit. During low VCC

situation, the UVLO makes sure that the outputs

are off until the internal circuit is operational

normally.

Pin Assignment

SOP-8L/PDIP-8L

1

2

3

45

6

7

8

(Top View)

EN1/2

FB1

AP450

OUT1

FB2

OUT2

V

REF

GND

Vcc

Pin Descriptions

Pin

Name

Pin

No.

Description

GND

1

Signal Ground

EN1/2

2

Channel 1/2 Enable Pin

OUT1

3

Linear Controller CH1output

FB1, 2

4, 5

Voltage Feedback

OUT2

6

Linear Controller CH2 output

7

1.25V/0.8V Output

Vcc

8

Supply Voltage

Ordering Information

AP450 X X X

Package

Packing

N: PDIP-8L

S: SOP-8L

Blank: Tube

A : Taping

Bandgap Version

A: 1.25V

BG

B: 0.8V

BG