LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER - Diodes Incorporated
Description
AH293
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER
Features
• • • • • • • • • 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
General Description
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
Lead-free
AH293-Y
Package Code Y
Packaging (Note 2) SOT89-5L
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.
AH293 Rev.
2
1 of 7 www.
diodes.
com
JANUARY 2007
© Diodes Incorporated
AH293
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER
Pin Assignment
Vdd 1 GND 2 DO 3 SOT89-5L AH293
5 RD
7 4 DOB
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
AH293
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER
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