Block Diagram
AH286
HALL-EFFECT SMART FAN MOTOR CONTROLLER
Vdd
2
Regulator
Hall
Plate
Amp.
Lock Shutdown
and
Automatic Recovery
Control Logic
3 DO
4 DOB
5
1
GND
RD
Typical Application Circuit (SIP-5L)
Vdd
(12V)
RD
D2
R pu
D1
286
Coil 2
1 2345
Coil 1
C1=1uF
GND
48V
48V
12V DC Brush-Less Fan with RD Output Function
AH286 Rev. 4
3 of 10
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JANUARY 2007
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