BH6717NUV-E2 Datasheet, PDF (1/11 Pages) Rohm – Three-Phase Full-Wave Fan Motor Driver for Note PC

DC Brushless Motor Drivers for Cooling Fans
Three-Phase Full-Wave
Fan Motor Driver for Note PC
BH6717NUV
No.12010EAT18
●Description
BH6717NUV is a three-phase sensorless fan motor driver used to cool off notebook PCs. It is controlled by a variable
speed provided through the PWM input signal. Its feature is sensorless drive which doesn’t require a hall device as a
location detection sensor and motor downsizing can be achieved by limiting the number of external components as much
as possible. Furthermore, introducing a direct PWM soft switched driving mechanism achieves silent operations and low
vibrations.
●Features
1) Speed controllable by PWM input signal
2) Sensorless drive
3) Soft switched drive
4) Power save function
●Applications
small fan motor notebook PCs etc
●Absolute maximum ratings(Ta=25C)
Parameter
Symbol
Ratings
Unit
Supply voltage
VCC
−0.3～6.5
V
Power dissipation
Pd
560 *
mW
Operating temperature
Topr
-25～+95
C
Storage temperature
Tstg
-55～+125
C
Output current
Iomax
700 **
mA
FG signal output voltage
VFG
6.5
V
FG signal output current
IFG
6
mA
Junction temperature
Tjmax
125
C
* Reduce by 5.6mW/C over 25/C. (On 70mm×70mm×1.6mm glass epoxy board)
** This value is not to exceed Pd.
●Operating conditions
Parameter
Symbol
Ratings
Unit
Operating supply voltage range
VCC
1.8 ～ 5.5
V
*These specifications might change for their improvement etc.
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2012.03 - Rev.A