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AH292

LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER



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AH292 pdf
Features
AH292
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
General Description
On Chip Hall Sensor
Rotor-Locked Shutdown
Automatically Restart
Frequency Generator (FG) Output
Built-in Zener Protection for Output Driver
Operating Voltage: 1.8V~5.75 V
Output Current: IO(AVE) = 400 mA
Lead Free Finish/RoHS Compliant for Lead Free
products (Note 1)
Lead Free Packages: SOT89-5L
AH292 is a monolithic fan motor controller with Hall sensor’s
capability. It contains two complementary open-collector
transistors for motor’s coil driving, automatic lock current
shutdown, and recovery protections. In addition a Frequency
generator (FG) output is also available for speed detection.
Rotor-lock shutdown detection circuit turns off the output driver
when the rotor is blocked to avoid coil overheat. Then, the
automatic recovery circuit will restart the motor. These protected
actions are repeated and periodic during the blocked period. Until
the blocking is removed, the motor recovers and runs normally.
Ordering Information
AH292 - X X X
Package
Y: SOT89-5L
Lead-Free
L : Lead Free
Packing
-B : Bulk
-7/-13 : Taping
Note: 1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.
Device
AH292-Y
Lead-free
Package
Code
Y
Packaging
(Note 2)
SOT89-5L
Tube/Bulk
Quantity
Part Number
Suffix
NA NA
7” Tape and Reel
Quantity
Part Number Suffix
2500/Tape & Reel
-13
Note: 2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
AH292 Rev. 3
1 of 7
www.diodes.com
JANUARY 2007
© Diodes Incorporated



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AH292 pdf
Pin Assignment
AH292
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Pin Descriptions
Vdd 1
5 FG
GND 2 AH292
DO 3
74 DOB
SOT89-5L
Symbol
FG
Vdd
DO
DOB
GND
Description
Frequency Generation
Input Power
Output Pin
Output Pin
Ground
Block Diagram
Vdd
2
Regulator
Hall
Plate
Amp.
Lock shutdown
and
Automatic recovery
Control Logic
3 DO
4 DOB
AH292 Rev. 3
5
GND
1
FG
2 of 7
www.diodes.com
JANUARY 2007
© Diodes Incorporated



Part Number AH292
Description LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER
Maker Diodes Incorporated - Diodes Incorporated
Total Page 7 Pages
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