ML4435 Datasheet (Micro Linear) - Sensorless BLDC Motor Controller

ML4435, Sensorless BLDC Motor Controller

The ML4435 provides all the circuitry for sensorless speed control of 3 phase Brushless DC Motors.

Controller functions include start-up circuitry, Back EMF commutation control, Pulse Width Modulation (PWM) speed control, pulse-by-pulse current limiting, motor coasting, and under-voltage protection.

ML4435 Features

* n Proprietary back-EMF sensing commutation technique for motor communication without hall effect sensors n PWM pulse-by-pulse current limiting to protect motor and FET drivers n Stand-alone operation; motor starts and stops with power applied to the IC

* n Soft-start function limits start-up curr