Diodes Incorporated AH287
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. These protected actions are repeated and periodic during the blocked period.| Part No. | AH287 |
|---|---|
| Datasheet | AH287 Download |
| Manufacturer |  Diodes Incorporated |
| Description | HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER |
| Buy | Stock & Price |
FEATURES
AH287 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLERGENERAL 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) 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. Until the blocking is removed, the motor recovers and runs normally. Typical Application Circuit 24V D2 287 D1 12 34 GND D3 C1 DO DOB L2 L1 48V 48V Note: The optional Capacitor C1 and Diode D3 are for power stabilization. C1 is recommended to be E-Cap., luF/25V; D3 is recommended to be Zener Diode, VZ =27V. Which C1and D3 value need to be fine tuned to optimize design for different coils and power suppliers.
