OCH2981 Description
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 plementary open-drain output drivers with internal Zener diode protection. It is optimized for low start-up voltage.
OCH2981 Key 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
- Built-in reverse