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Features
AH287
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER
General Description
• On Chip Hall Sensor • Rotor-Locked Shutdown • Automatically Restart • Built-in Zener Protection for Output Driver • Operating Voltage: 3.8V~28V • Output Current: IO(AVE) = 400mA • Lead Free Packages: SIP-4L and SOT89-5L (Note 1) • SIP-4L and SOT89-5L: Available in “Green” Molding
Compound (No Br, Sb) • Lead Free Finish/ RoHS Compliant (Note 2)
AH287 is a monolithic fan motor controller with Hall sensor’s capability. It contains two complementary open-drain 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.