Single-Phase Full-Wave Motor Driver
TECHNICAL NOTE
DC Brushless Motor Driver Series for Cooling Fans
Low-voltage Single-phase Full-wave DC Brushless Fan Mot...
Description
TECHNICAL NOTE
DC Brushless Motor Driver Series for Cooling Fans
Low-voltage Single-phase Full-wave DC Brushless Fan Motor Drivers
BH6766FVM, BD6989FVM, BH6799FVM, BH6789FVM
●Description This is the summary of models that suit for notebook PC cooling fan. They employ Bi-CMOS and Bi-CDMOS process, and realize low ON resistor, low power consumption, and quiet drive. They also incorporate lock protection and automatic restart circuit which does not require external capacitor.
●Features 1) Soft switched drive 2) Incorporating lock protection and automatic restart circuit(BD6989FVM、BH6799FVM、BH6789FVM) 3) Rotating speed pulse signal (FG) output (BD6989FVM、BH6799FVM、BH6766FVM) 4) Lock alarm signal (AL) output (BH6789FVM) 5) PWM speed control (BD6989FVM) 6) MSOP8 compact package
●Applications For compact 5V fan such as notebook PC cooling fan
●Lineup
Low voltage single-phase full wave
PWM speed control
Lock protection circuit incorporated
FG output BD6989FVM
PWM speed control not available
Lock protection circuit incorporated
Lock protection circuit not incorporated
FG output BH6799FVM AL output BH6789FVM FG output BH6766FVM
Jan. 2007
●Absolute maximum ratings
◎BD6989FVM
Parameter
Symbol
Limit
Supply voltage
Vcc 10
Power dissipation
Pd 585*
Operating temperature
Topr -40~+105
Storage temperature
Tstg -55~+150
Output voltage
Vomax
10
Output current
Iomax
700**
FG signal output current
IFG 10
FG signal output voltage
VFG
10
Junction temperature
Tj...
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