BA6901F Datasheet, PDF (1/10 Pages) Rohm – 2-Phase half-wave motor pre driver for fan motor

Motor driver ICs
BA6901F
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
VCC
Power dissipation
Pd
36
V
625 ^∗1
mW
Operating temperature
Topr
−25~+75
°C
Storage temperature
Tstg
−55~+150
°C
Output current
IOUT
70 ^∗2
mA
Signal output voltage
VSO
36
V
Signal output current
ISO
15
mA
Junction temperature
Tjmax
150
°C
∗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.
!Recommended operating conditions (Ta = 25°C)
Parameter
Operating supply voltage
Symbol
VCC
Min.
3.5
Typ.
−
Max.
Unit
28.0
V
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