AH291 Datasheet | Diodes Incorporated

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 plementary 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...