RT8749 Datasheet - Richtek

RT8749 Digital Single-Phase Full Wave BLDC Fan Controller

The RT8749 is a highly integrated digital control 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, and decodes the duty-ratio of this PWM signal to 256 counts. The decoded dut.

RT8749 Features

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

* Embedded 256 x 16 Bits Flash Memory

* Built-in Low RDS(ON) Power

RT8749-Richtek.pdf