OCH2981 Datasheet (Orient Chip) - Two Phase Hall-Effect Smart Fan Motor Controller

OCH2981, Two Phase Hall-Effect Smart Fan Motor Controller

The OCH2981 is a single-chip solution for driving two-coil brushless direct current (BLDC) fans and motors.

The device includes a Hall-effect sensor, dynamic offset correction and two complementary open-drain output drivers with internal Zener diode protection.

It is optimized for low start-up volta

OCH2981 Features

* Single-Chip solution

* High sensitivity Hall-effect Sensor

* Operating Voltage: 3.5V to 28V

* Average output current up to 300mA

* Built-in Hall sensor and input amplifier

* Rotor Lock Protection (Lock detection, output shutdown and automatic re-start)

* Built-in revers