BD6989FVM-TR Datasheet, PDF (1/17 Pages) Rohm – Low-voltage Single-phase Full-wave DC Brushless Fan Motor Drivers

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