○Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays

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TSZ02201-0H1H0B100500-1-2

© 2012 ROHM Co., Ltd. All rights reserved.

18.DEC.2012 Rev.002

TSZ22111・14・001

Datasheet

www.rohm.com

DC Brushless Motor Drivers for Cooling Fans

Two-phase Full-wave

DC Brushless Fan Motor Drivers

BA6901F

●General description

BA6901F is two-phase half-wave fan motor driver. They

incorporate lock protection, automatic restart circuit and

FG/AL output. Some of them have variable speed

control function.

●Features

Current Limit circuit

PWM control (PWM pulse signal input)

Incorporates lock protection and automatic restart

circuit

Lock alarm signal(AL) output

Rotation speed pulse signal (FG) output

●Package

W (Typ.) x D (Typ.) x H (Max.)

SOP-16

10.00mm x 6.20mm x 1.71mm

●Application

For desktop PC, server, general consumer equipment, communication equipment and industrial equipment.

●Absolute maximum ratings

Parameter

Symbol

Limit

Unit

Supply voltage

Vcc

36

V

Power dissipation

Pd

625*

mW

Operating temperature

Topr

-40∼+100

℃

Storage temperature

Tstg

-55∼+150

℃

Output current

Iomax

70

mA

FG signal output current

Ifg

15

mA

FG signal output voltage

Vfg

36

V

AL signal output current

Ial

15

mA

AL signal output voltage

Val

36

V

Junction temperature

Tjmax

150

℃

*

Reduce by 5.0mW/°C over Ta=25°C. (On 70.0mm×70.0mm×1.6mm glass epoxy board)

●Recommended operating conditions

Parameter

Symbol

Limit

Unit

Operating supply voltage range

Vcc

3.5∼28.0

V

Hall input voltage range

VH

0∼Vcc-2.2

V

SOP16