AH293
Low Voltage Hall-Effect Smart Fan Motor Controller
Block Diagram (SIP5)
Vdd
2
Lock shutdown
and
Automatic recovery
Regulator
3
4
DO
Hall
Plate
Control Logic
Amp.
DOB
5
1
GND
RD
Typical Application Circuit
D2
Vdd
(1.8V/5.75V)
R
pu
293
D1
Coil2
GND
Coil1
1
2
3
4
5
RD
(alarm)
C3
R1
C1
R2
C2
Notes: R1, R2: typical 56Ω
2.2μF
C1, C2, C3: typical
The R, C value need to be fine tuned
base on coils design.
1.8V/5.75V DC Brush-less Fan with RD output function
Anachip Corp.
www.anachip.com.tw
Rev 1.1 Oct 5, 2005
2/9