ah291 Diodes, Inc., ah291 Datasheet - Page 2

• Manufacturer Part Number: ah291
• Description: Low Voltage Hall-effect Smart Fan Motor Controller
• Manufacturer: Diodes, Inc.

Pin Assignment
Pin Descriptions
AH291 Rev. 2
1 2
291
3
4
SIP-4L
Front View
1 : V
2 : DO
3 : DOB
4 : GND
dd
Name
DOB
GND
V
DO
NC
dd
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
www.diodes.com
Input Power
Output Pin
Output Pin
Ground
Not Connected
2 of 10
Vdd
NC GND DO
5
1
SOT25
Description
291
2
DOB
4
3
GND
Vdd
DO
1
2
3
SOT89-5L
AH291
CONTROLLER
DECEMBER 2006
©
Diodes Incorporated
AH291
7 4
5
DOB
NC