Part Number: AH291
Function: LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER
Package: SIP-4L and SOT89-5L Type
Manufacturer: Diodes Incorporated.
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.
1. On Chip Hall Sensor
2. Rotor-Locked Shutdown
3. Automatically Restart
4. Built-in Zener Protection for Output Driver
5. Operating Voltage: 1.8V to 5.75V
6. Output Current: IO(AVE)= 400mA
7. Green Molding Compound
1. Two-coil BLDC cooling fans
2. Low to medium voltage, low power BLDC motors
AH291 Datasheet PDF Download
Other data sheets are available within the file: AH-291, AH291-YG-13