APX6219

The APX6219 is designed to drive both winding of a two-phase bipolar stepper motor or bidirectionally control 2 DC motors. APX6219 includes two Hbridges capable of continuous output current of ±750 mA with peak start up to 1A and operating voltages up to 28V. Motor winding current can be controlled by the internal fixed-frequency, pulse-width modulated (PWM), current-control circuitry. Wide range current control is controlled by means of two logic inputs with a external reference voltage for each bridge. The peak load current limit is set by the user's selection of a reference voltage and current-sensing resistor. Two logic-level select output current limits of 0%,33%, 67%, or 100% of the maximum level. A phase input to each bridge determines load current direction. A thermal shutdown protection circuit disables the outputs if the chip temperature over the safe operation limit. The APX6219 come in SOP-24 package.