BD6326NUX Datasheet, PDF (1/25 Pages) Rohm – Speed controllable by PWM input signal

DC Brushless Fan Motor Drivers
Three-Phase Full-Wave
Fan Motor Driver
BD6326NUX
General description
BD6326NUX 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.
Package
VSON010X3030
W(Typ) x D(Typ) x H(Max)
3.00mm x 3.00mm x 0.60mm
Features
„ Speed controllable by PWM input signal
„ 180° Sinusoidal drive
„ Power save function
„ Internal RNF resistance
„ Motor rotation direction select function(FR)
VSON010X3030
Application
„ Small fan motor notebook PCs etc.
Absolute maximum ratings
Parameter
Symbol
Limit
Unit
Supply voltage
Power dissipation ^{(NOTE 1)}
V_CC
7
V
P_d
0.58
W
Operating temperature
T_opr
–25 to +95
°C
Storage temperature
T_stg
–55 to +150
°C
Output voltage
Output current^{(NOTE 2)}
V_omax
7
V
I_omax
700
mA
FG signal output voltage
V_FG
7
V
FG signal output current
I_FG
6
mA
Junction temperature
T_jmax
150
°C
(NOTE 1) Reduce by 4.64mW/°C over Ta=25°C. (On 74.2mm×74.2mm×1.6mm glass epoxy board)
(NOTE 2) This value is not to exceed Pd.
Caution: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit
between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated over the
absolute maximum ratings.
Recommended operating condition
Parameter
Operating supply voltage range
Input voltage range(PWM, FR terminals)
Symbol
Limit
Unit
V_CC
2.2 to 5.5
V
V_INx
0 to V_CC
V
○Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays
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TSZ02201-0H1H0B100530-1-2
11. Dec. 2014 Rev.002