BD67173NUX Datasheet, PDF (1/30 Pages) Rohm – Three-Phase Full-Wave Fan Motor Driver

Datasheet
DC Brushless Fan Motor Drivers
Three-Phase Full-Wave
Fan Motor Driver
BD67173NUX
General Description
BD67173NUX 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.
Key Specifications
 Operating Supply Voltage Range: 2.2V to 5.5V
 Operating Temperature Range: -25°C to +95°C
Package(s)
VSON010X3030
W(Typ) x D(Typ) x H(Max)
3.00mm x 3.00mm x 0.60mm
Features
 Speed controllable by PWM input signal
 Sensorless drive
 Soft switched drive Quick start
 Power save function
 Internal RNF resistance
 Quick start function
VSON010X3030
Applications
 Small fan motor for notebook PCs etc.
Typical Application Circuit(s)
SIG
＋
1uF~4.7uF
VCC
10kohm
FG
COM
T
VCC
U
VCC
10kohm ^FT^R
1pin
M
―
PWM
TOSC
GND
V
ï¼·
2200pF
PWM
〇Product structure : Silicon monolithic integrated circuit
.www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
〇This product has no designed protection against radioactive rays
1/27
TSZ02201-0H1H0B101160-1-2
08.Sep.2015 Rev.001