AP1346/1347

Two Coil Fan Motor Predriver

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 Jun 9, 2004

1/5

Features

- Compatible to a Hall element

- Lock shutdown and automatic restart

- Rotation detection (RD) output name as AP1347

- Speed indication output (FG) named as AP1346

- SOP8 package

- Include Thermal Shutdown circuit

Application

- High voltage, high current brushless DC fan

General Description

The AP1346/7 fan motor predriver is suited for

two-coil brush-less DC fan. All functions, including

lock shutdown, automatic restart, speed indication

(FG), have been integrated into one chip. When the

motor is under lock condition, lock shutdown

function turns off the output. When the lock

condition is removed, the IC automatically restarts

and allows DC fan to run. In addition, the FG

function is to indicate the rotation speed and the RD

function is to detect the motor status.

Pin Assignment

AP1346/1347

3

4

8

7

6

5

2

1

HS(+)

VCC

HS(-)

FG/RD

GND

CT

OUT2

OUT1

( Top view )

SOP-8L

Pin Descriptions

Name

Description

VCC

Power input

HS(+)

Hall input

FG /RD

Speed

indication

/

Rotation

detection

HS(-)

Hall input

GND

Ground

CT

Timing capacitor

OUT2

Driver output

OUT1

Driver output

Ordering Information

Part Number

Package

S: SOP-8L

AP134X X - X X X

Packing

Blank : Tube

A : Taping

Lead

L: Lead Free

Blank: Normal

6: AP1346

7: AP1347

Wafer Body

Blank or

A~Z : if necessary

to specify