AM7232S

Motor Driver ICs

http://www.amtek-semi.com

0

Specifications subject to change without notice

- 1 -

Single Phase Full-Wave Motor Driver for

Fan Motor AM7232S

This is the summary of application for AM7232S optimum for driving 12V fan for general

consumer equipment. The most attractive function of AM7232S is slope adjust by external

resistor, that can meet most of fan request. This IC employs soft switching drive, Bi-CMOS

process, and realizes silent drive, low ON resistor, and low power consumption. This also

incorporate lock protection and auto restart circuit which does not require external capacitor.

Optimum for driving 12V fan for general consumer equipment

1) Slope adjust mode for VH and VL pin control.

2) Soft switched drive.

3) PWM speed control.

4) Rotating speed pulse signal (FG) output.

5) Incorporating lock protection and automatic

restart circuit.

6) Power Tr incorporated.

7) Hall Bias voltage built-in.

8) Soft start function built-in for reducing power

up acoustic noise.

9) Stop mode duty adjustable.

Parameter

Symbol

Limits

Unit

Supply voltage

18

V

Output current

Iomax

1500

mA

FG single output current

10

mA

FG single output voltage

18

V

Vref output current

Iref

10

mA

HB output current

10

mA

High duty slope setting voltage

VH

6

V

Low duty slope setting voltage

VL

6

V

Stop mode setting voltage

VStop

6

V

Power dissipation (JEDEC 2S2P PCB)

Pd

4500*

mW

Operate temperature range

-25～+105

℃

Storage temperature range

-55～+150

℃

Junction temperature

Tjmax

150

℃

* Pd de-rated by 36mW/

C over 25℃ (based on JEDEC 2S2P board)

Those are stress rating only and functional operating at those conditions for extended periods may

damage to the device.