Description

The A3966 is designed to drive both windings of a two-phase bipolar stepper motor. The device includes two full-bridges capable of continuous output currents of ±650 mA and operating voltages to 30 V. Motor winding current can be controlled by the internal fixed-frequency, pulse-width modulated (PWM), current-control circuitry. The peak load current limit is set by user selection of a reference voltage and current-sensing resistors.

Features and Benefits

▪ ±650 mA continuous output current

▪ 30 V output voltage rating

▪ Internal fixed-frequency PWM current control

▪ Satlington® sink drivers

▪ User-selectable blanking window

▪ Internal ground-clamp and flyback diodes

▪ Internal thermal-shutdown circuitry

▪ Crossover-current protection and UVLO protection