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AH291 - LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER

Datasheet Summary

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.

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.

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Datasheet Details

Part number AH291
Manufacturer DIODES Incorporated
File Size 181.88 KB
Description LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER
Datasheet download datasheet AH291 Datasheet
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Full PDF Text Transcription

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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.
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