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Rohm Semiconductor Electronic Components Datasheet

BH67172NUX Datasheet

Three-Phase Full-Wave Fan Motor Driver

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BH67172NUX pdf
Datasheet
DC Brushless Fan Motor Drivers
Three-Phase Full-Wave
Fan Motor Driver
BH67172NUX
General description
BH67172UX 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
„ Speed controllable by PWM input signal
„ Sensorless drive
„ Soft switched drive Quick start
„ Power save function
„ Internal RNF resistance
„ Quick start function
Application
„ Small fan motor notebook PCs etc.
Package
VSON010X3030
W (Typ.) x D (Typ.) x H (Max.)
3.00mm x 3.00mm x 0.60mm
VSON010X3030
Absolute maximum ratings
Parameter
Symbol
Limit
Supply voltage
Power dissipation
VCC
Pd
0.36.5
464 *1
Operating temperature
Topr –25 to +95
Storage temperature
Output current
Tstg
Iomax
–55 to +125
700*2
FG signal output voltage
VFG
6.5
FG signal output current
IFG 6
Junction temperature
Tjmax
125
*1 Reduce by 4.64mW/°C over Ta=25°C. (On 74.2mm×74.2mm×1.6mm glass epoxy board)
*2 This value is not to exceed Pd.
Unit
V
mW
°C
°C
mA
V
mA
°C
Recommended operating conditions
Parameter
Operating supply voltage range
Symbol
VCC
Limit
1.8 to 5.5
Unit
V
Product structureSilicon monolithic integrated circuit
.www.rohm.co
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product is not designed protection against radioactive rays
1/16
TSZ02201-0H1H0B100300-1-2
31.JUL.2012 Rev.002


Rohm Semiconductor Electronic Components Datasheet

BH67172NUX Datasheet

Three-Phase Full-Wave Fan Motor Driver

No Preview Available !

BH67172NUX pdf
BH67172NUX
Pin configuration
(TOP VIEW)
FG
COM
VCC
U
FR
PWM
TOSC
GND
V
W
Fig.1 Pin configuration
Datasheet
Pin description
P/No.
1
2
3
4
5
6
7
8
9
10
T/name
FG
COM
VCC
U
FR
W
V
GND
TOSC
PWM
機能
FG output terminal
Coil midpoint terminal
Power supply terminal
U phase output terminal
Forward/Reverse switch terminal
W phase output terminal
V phase output terminal
GND terminal
Start-up oscillation terminal
PWM signal input terminal
Block diagram
FG
PWM
FR
TOSC
TSD
UVLO
OSC
Det Level
BEMF
Det
Logic
Pre
GND
COM
VCC
U
V
W
Fig.2 Block diagram
www.rohm.co
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
2/16
TSZ02201-0H1H0B100300-1-2
31.JUL.2012 Rev.002


Part Number BH67172NUX
Description Three-Phase Full-Wave Fan Motor Driver
Maker ROHM
Total Page 20 Pages
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BH67172NUX pdf
BH67172NUX Datasheet PDF
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