AH293
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
General Description
Features
AH293 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. Also, rotor-state detection
(RD) output is for speed detection.
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On Chip Hall Sensor
Rotor-Locked Shutdown
Automatically Restart
Rotor-State Detection (RD) Output
Built-in Zener Protection for Output Driver
Operating Voltage: 1.8V~5.75 V
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.
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Output Current: IO(AVE) = 400 mA
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Lead Free Finish/RoHS Compliant for Lead Free
products (Note 1)
Packages: SOT89-5L
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Ordering Information
- X X X
AH293
Package
Packing
-7/-13 :
Lead-Free
L : Lead Free
Y: SOT89-5L
Taping
Note:
1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.
Package
Code
Y
Packaging
(Note 2)
SOT89-5L
7” Tape and Reel
Quantity Part Number Suffix
2500/Tape & Reel -13
Device
AH293-Y
Lead-free
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.
AH293 Rev. 2
1 of 7
JANUARY 2007
www.diodes.com
© Diodes Incorporated