Description

AH293 is a monolithic fan motor controller with Hall sensor’s capability. It contains two complementary open-collector transistors for motor’s coil driving, automatic lock current shutdown, and recovery protections. Besides, rotor-state detection (RD) output is for speed 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. These protecting actions are repeated and periodic during the blocked period. Until the blocking is removed, the motor recovers running normally.

Specifications and features

- On chip Hall sensor

- Rotor-locked shutdown

- Automatically restart

- Rotor-state detection (RD) output

- Built-in Zener protection for output driver

- Operating voltage: 1.8V~5.75 V

- Output current: IO(AVE) = 400 mA

- Package: SIP-5L, SOT23-5L, SOT89-5L

Application Scenarios

This model can be used in various fan motor control applications, where it requires Hall sensor capability, automatic lock current shutdown, and recovery protections.

Comparison

- Efficient motor coil driving

- Automatic lock current shutdown and recovery protections

- Rotor-state detection for speed detection

- Built-in Zener protection for output driver

- Wide operating voltage range

- High output current for motor control

- Multiple package options available

- None reported