DC Brushless Motor Drivers for Fans
Standard Single-phase Full wave
Fan Motor Driver
This is the summary of application for BD6981FVM. BD6981FVM can drive FAN motor silently by BTL soft switching.
Small package (MSOP8)
BTL soft switching drive
Constant voltage output for hall element
Lock protection and auto restart
(without external capacitor)
Rotating speed pulse signal (FG) output
PC, PC peripheral component
(Power supply, VGA card, case FAN etc.)
BD player, Projector etc.
W(Typ) x D(Typ) x H(Max)
2.90mm x 4.00mm x 0.90mm
Absolute Maximum Ratings
-40 to +105
Storage Temperature Tstg -55 to +150
Hall Input Voltage
FG Signal Output Voltage
FG Signal Output Current
HB Output Current
(Note 1) Reduce by 4.68mW/°C over 25°C. (On 70.0mm×70.0mm×1.6mm glass epoxy board)
(Note 2) This value is not to exceed Pd.
Caution: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit
between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated
over the absolute maximum ratings.
○Product structure：Silicon monolithic integrated circuit
© 2012 ROHM Co., Ltd. All rights reserved.
○This product has no designed protection against radioactive rays
20.May 2015 Rev.003