AH293

LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR

CONTROLLER

AH293 Rev. 2

1 of 7

JANUARY 2007

www.diodes.com

Lead-free

•

On Chip Hall Sensor

•

Rotor-Locked Shutdown

•

Automatically Restart

•

Rotor-State Detection (RD) Output

•

Built-in Zener Protection for Output Driver

•

Operating Voltage: 1.8V~5.75 V

•

Output Current:

)

AVE

(

O

I

= 400 mA

•

Lead Free Finish/RoHS Compliant for Lead Free

products (Note 1)

•

Packages: SOT89-5L

AH293 is a monolithic fan motor controller with Hall sensor’s

capability. It contains two complementary open-collector

transistors for Motor’s coil driving, automatic lock current

shutdown, and recovery protections. Also, rotor-state detection

(RD) output is for speed detection.

Rotor-lock shutdown detection circuit turns off the output driver

when the rotor is blocked to avoid coil overheat. Then, the

automatic recovery circuit will restart the motor. These protected

actions are repeated and periodic during the blocked period. Until

the blocking is removed, the motor recovers and runs normally.

Ordering Information

Note:

1.

RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.

Note:

2.

Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at

http://www.diodes.com/datasheets/ap02001.pdf.

Features

General Description

7” Tape and Reel

Device

Package

Code

Packaging

(Note 2)

Quantity

Part Number Suffix

AH293-Y

Y

SOT89-5L

2500/Tape & Reel

-13

AH293

X X X

Packing

Package

Lead-Free

L : Lead Free

Y: SOT89-5L

Taping

-7/-13 :

-