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AH289

Anachip
Part Number AH289
Manufacturer Anachip
Description High Voltage Hall-Effect Smart Fan Motor Controller
Published May 10, 2007
Detailed Description AH289 High Voltage Hall-Effect Smart Fan Motor Controller „ Features - On chip Hall sensor - Rotor-locked shutdown - Aut...
Datasheet PDF File AH289 PDF File

AH289
AH289

Overview
AH289 High Voltage Hall-Effect Smart Fan Motor Controller „ Features - On chip Hall sensor - Rotor-locked shutdown - Automatically restart - Rotor-state detection (RD) output - Built-in Zener protection for output driver - Operating voltage: 3.
8V~28V - Output current: IO(AVE) = 400mA - Package: SIP-5L, SOT89-5L „ General Description AH289 is a monolithic fan motor controller with Hall sensor’s capability.
It contains two complementary open-drain transistors for motor’s coil driving, automatic lock current shutdown, and recovery protections.
In addition, rotor-state detection (RD) output is for Rotor-state detection.
To avoid coil burning, rotor-lock shutdown detection circuit shut down the output driver if the rotor is blocked and then the automatic recovery circuit will try to restart the motor.
This function repeats while the rotor is blocked.
Until the blocking is removed, the motor recovers running normally.
„ Pin Configuration 289 ( Front View ) 1 : RD 2 : VCC 3 : DO 4 : DOB 5 :...


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