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AH291

Diodes Incorporated
Part Number AH291
Manufacturer Diodes Incorporated
Description LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER
Published May 10, 2007
Detailed Description AH291 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Features • • • • • • • On Chip Hall Sensor Rotor-Locked Shutdo...
Datasheet PDF File AH291 PDF File

AH291
AH291

Overview
AH291 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Features • • • • • • • On Chip Hall Sensor Rotor-Locked Shutdown Automatically Restart Built-in Zener Protection for Output Driver Operating Voltage: 1.
8V~5.
75 V Output Current: IO( AVE ) = 400 mA Lead Free Packages: SIP-4L and SOT89-5L General Description AH291 is a monolithic fan motor controller with Hall sensor’s capability.
It contains two complementary open-collector drivers for motor’s coil driving, automatic lock shutdown and restart function relatively.
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 AH291 - X X X Package P: SIP-4L Y: SOT89-5L Lead L : Lead Free Packing -B : -7/-13 : Bulk Taping Note: 1.
RoHS revision 13.
...


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