BA6901F

Motor driver ICs

1/10

2-Phase half-wave motor pre driver for

fan motor

BA6901F

BA6901F is a 2-phase half-wave motor pre driver for fan motors. This IC has lock detection, and automatic restart

functions as motor protection function.

Variable speed control is possible by charge-discharge pulse circuit and PWM input. This IC incorporates current limit

circuit, hall signal output pin, and alarm signal output pin.

!

Applications

Fan motors

!

Features

1) Lock detection, automatic restart circuit.

2) Hall signal output.

3) Alarm signal output.

4) Current limit circuit.

5) PWM control (PWM pulse signal input).

6) Charge-discharge pulse circuit (Possible to control of variable speed by charge-discharge pulse circuit and PWM input).

7) Thermal shut down circuit.

!

Absolute maximum ratings (Ta = 25

°C)

Parameter

Symbol

Limits

Unit

Power supply voltage

Tjmax

36

36

15

150

∗1

∗2

70

V

mA

°C

mA

V

Power dissipation

Pd

625

mW

Operating temperature

Topr

°C

°C

Storage temperature

Output current

Signal output voltage

Junction temperature

Signal output current

Tstg

∗1 To use at temperature above 25°C reduce 5.0mW / °C.

(On 70.0mm

×70.0mm×1.6mm glass epoxy board.)

∗2 This value is not to be over Pd and ASO.

−25~+75

−55~+150

!

Recommended operating conditions (Ta = 25

°C)

Parameter

Symbol

Min.

Typ.

Max.

Unit

Operating supply voltage

3.5

−

28.0

V