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BH6717NUV Datasheet

Three-Phase Full-Wave Fan Motor Driver for Note PC

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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=25C)
Parameter
Symbol
Ratings
Supply voltage
VCC
0.36.5
Power dissipation
Pd 560 *
Operating temperature Topr -25+95
Storage temperature
Tstg -55+125
Output current
Iomax
700 **
FG signal output voltage
VFG
6.5
FG signal output current
IFG
6
Junction temperature
Tjmax
125
* Reduce by 5.6mW/C over 25/C. (On 70mm×70mm×1.6mm glass epoxy board)
** This value is not to exceed Pd.
Unit
V
mW
C
C
mA
V
mA
C
Operating conditions
Parameter
Symbol
Operating supply voltage range
VCC
*These specifications might change for their improvement etc.
Ratings
1.8 5.5
Unit
V
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
1/10
2012.03 - Rev.A


Rohm Semiconductor Electronic Components Datasheet

BH6717NUV Datasheet

Three-Phase Full-Wave Fan Motor Driver for Note PC

No Preview Available !

BH6717NUV
Technical Note
Electrical characteristics(Unless otherwise specified VCC=5V, Ta=25C)
Parameter
Circuit current STB
Circuit current
PWM input H level
PWM input L level
PWM input current H
PWM input current L
Input frequency
FR input H level
FR input L level
PWM off time
Limit voltage
Output voltage
FG low voltage
Lock protection det.time
Lock protection rel.time
Lock protection ratio
Symbol
ICST
ICC
VPH
VPL
IPH
IPL
FP
VFRH
VFRL
TPO
VLM
VO
VFGL
LDT
LRT
RLT
Min.
-
2.5
0
-
-50
20
4.5
0
500
0.2
-
-
-
2.5
-
Limits
Typ.
20
4
-
-
0
-20
-
-
-
1000
0.25
0.25
-
0.5
5
10
Max.
50
VCC
0.7
1
-
50
VCC
0.5
2000
0.3
0.325
0.4
-
10
-
Unit Conditions
μA
mA
V
V
μA PWM=VCC
μA PWM=GND
kHz
V FR=H : Reverse drive
V FR=L : Forward drive
μs
V
V Io250mA (H.L. total)
V IFG5mA
s
s
- rel.time/det.time ratio
Package outlines (Unitmm)
Package : VSON010V3030
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
2/10
2012.03 - Rev.A


Part Number BH6717NUV
Description Three-Phase Full-Wave Fan Motor Driver for Note PC
Maker ROHM
Total Page 11 Pages
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