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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 moto...


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