Hall-Effect Smart Fan Motor Controller
Block Diagram (SIP4)
VCC
1
Regulator
Lock shutdown
and
Automatic recovery
Hall
Plate
Amp.
Control Logic
AH281
2 DO
3 DOB
4
GND
Application Circuit
12V
D1
VCC
C1 =10uF
+
L2
L1
281
12 34
GND
DOB
DO
12V brush-less DC fan
Anachip Corp.
www.anachip.com.tw
Rev 0.7 Apr 16, 2004
2/7