L6219 是什么集成电路

The L6219DS motor driver is designed to drive both windings of a
bipolar stepper motor or bidirectionally control two dc motors. Both
bridges are capable of sustaining 45 V and include internal pulse-width
modulation (PWM) control of the output current to 750 mA. The outputs
have been optimized for a low output saturation voltage drop (less than
1.8 V total source plus sink at 500 mA).
For PWM current control, the maximum output current is determined
by the user’s selection of a reference voltage and sensing
resistor. Two logic-level inputs select output current limits of 0, 33,
67, or 100% of the maximum level. A PHASE input to each bridge
determines load current direction.
The bridges include both ground clamp and flyback diodes for
protection against inductive transients. Internally generated delays
prevent cross-over currents when switching current direction. Special
power-up sequencing is not required. Therma