ML4435 Datasheet (Fairchild) - 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 undervoltage protection.

ML4435 Features

* Proprietary back-EMF sensing commutation technique for motor communication without hall effect sensors

* PWM pulse-by-pulse current limiting to protect motor and FET drivers

* Stand-alone operation; motor starts and stops with power applied to the IC

* Soft-sta