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AH293

LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER



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AH293 pdf
Features
AH293
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
General Description
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
Output Current: IO(AVE) = 400 mA
Lead Free Finish/RoHS Compliant for Lead Free
products (Note 1)
Packages: SOT89-5L
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.
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
AH293 - X X X
Package
Y: SOT89-5L
Lead-Free
L : Lead Free
Packing
-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
Package Packaging
Code
(Note 2)
7” Tape and Reel
Quantity
Part Number Suffix
AH293-Y Y SOT89-5L 2500/Tape & Reel
Lead-free
-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.
AH293 Rev. 2
1 of 7
www.diodes.com
JANUARY 2007
© Diodes Incorporated



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AH293 pdf
Pin Assignment
AH293
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Vdd 1
5 RD
GND 2 AH293
DO 3
74 DOB
SOT89-5L
Pin Descriptions
Symbol
RD
Vdd
DO
DOB
GND
Description
Rotor-State Detection
Input Power
Output Pin
Output Pin
Ground
AH293 Rev. 2
2 of 7
www.diodes.com
JANUARY 2007
© Diodes Incorporated



Part Number AH293
Description LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER
Maker Diodes Incorporated - Diodes Incorporated
Total Page 7 Pages
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