RT8749A Datasheet - Richtek

RT8749A Digital Single-Phase Full Wave BLDC Fan Controller

The RT8749A is a highly integrated digital controlled predriver IC for regulating single-phase full wave brushless DC (BLDC) fans at a programmed speed. The controller IC accepts a Pulse-Width Modulated (PWM) signal provided by the host. The decoded duty-ratio will then be used for mapping to the pr.

RT8749A Features

* including the peak-current limit, the thermal shutdown protection, the under-voltage protection and the motor lock protection. An automatic restart circuit is designed to rotate the motor after the lock condition is released. Applications

* Instrumentation Fans

* Central Heating Blowers

RT8749A-Richtek.pdf