Three-Phase Full-Wave Fan Motor Driver
Datasheet
DC Brushless Fan Motor Drivers
Three-Phase Full-Wave Fan Motor Driver
BD67173NUX
General Description
BD6717...
Description
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
CTOM VCC
VCC
10kohm
U FTR
1pin
M
―
PWM TOSC GND V W
2200pF
PWM
Product structure : Silicon monolithic integrated circuit .www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111 15 001
This product has no designed protection against radioactive rays
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TSZ02201-0H1H0B101160-1-2 08.Sep.2015 Rev.001
BD67173NUX
Contents
General Description ........................................
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