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Functional Block Diagram
(1) For SIP-4L
Vdd
1
Regulator
Hall
Plate
Amp.
AH2984
TWO PHASE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Lock detect,
Shutdown and
Automatic re-start
Control Logic
2 DO
3 DOB
4
GND
(2) For SOT89-5L
Vdd
1
Regulator
Hall
Plate
Amp.
Lock detect,
Shutdown and
Automatic re-start
Control Logic
5 NC
3 DO
4 DOB
AH2984
Document number: DS31698 Rev. 3 - 2
2
GND
3 of 11
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