Applied voltage
Power dissipation
Operating temperature
Storage temperature
V
CC
Pd
Topr
Tstg
V
mW
˚C
˚C
30
550
*
70
125
Limits
–30 ~ +75
*Derating : 5.5mW/˚C for operation above Ta=25˚C
(Mounted on a 70.0mm¥70.0mm¥1.6mm glass epoxy PCB.)
Output current I
OMAX
mA
Junction temperature T
jmax ˚C
UnitSymbolParameter
2-phase half-wave motor pre-driver
BA6409F
1) Built-in discrete diode for reverse connection
protection. (Maximum reverse connection
protection voltage: 80V)
2) Lock-up detector function & lock-up detector
output pin.
3) Compact SOP8-pin package. Fewer external
components make mounting spaces smaller.
4) Automatic restart when lock-up is removed.
5) Hall element input hysteresis circuit is built-in.
The BA6409F is a two-phase half-wave motor pre-
driver for fan motors. The built-in protection diode
eliminates an external diode and the concern of
connecting in reverse when fan motors equipped.
The device also has a lock-up detector and
automatic restart function. There is a lock-up
detector output pin on the IC.
SOP8
99W031A
1999 5 22
Dimension (Units : mm)Description
Features
Absolute Maximum Ratings (Ta=25˚C)
Applications
Two-phase half-wave motor pre-driver for fan motor
High reliability
–55 ~ +125