Diodes AH291 - Manual (Page 2)

AH291
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
AH291
Document number: DS31041 Rev. 8 - 2
2 of 9
www.diodes.com
June 2010
© Diodes Incorporated
Pin Descriptions
Pin Name Description
Vdd Input Power
DO Output Pin
DOB Output Pin
GND Ground
NC Not Connected
Functional Block Diagram
Hall
Plate
Control Logic
Regulator
Lock detect,
shutdown and
automatic re-start
Vdd
DOB
DO
Amp.
GND