Datasheet Summary
500mA Single Phase DC Fan Driver
- General Description
The OCH29891 is an integrated Hall sensor with H-Bridged output driver designed for brushless DC motor applications. The device is using HV process includes an one-chip Hall sensor for magnetic sensing, an amplifier that amplifies the Hall voltage, a parator to provide switching hysteresis for noise rejection, a bi-directional drivers for sinking and driving large current load.
Placing the device in a variable magnetic field, if the magnetic flux density is larger than threshold BOP, the DO is turned to sink and DOB is turned to drive. This output state is held until the magnetic flux density reverses and falls below BRP,...