L6219

DESCRIPTION 

The L6219 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 45V and include internal 

pulse-width modulation (PWM) control of the output current to 

750mA .The outputs have been optimized for a low output saturation

voltage drop (less than 1.8V total source plus sink at 500mA ). 

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. Thermal protection circuitry 

disables the outputs if the chip temperature exceeds safe operating 

limits. 

FEATURES 

*Interchangeable with SGS L6219

*750mA Continuous Output Current 

*45V Output Sustaining Voltage 

*Internal Clamp Diodes 

*Internal PWM Current Control 

*low Output Saturation Voltage 

*Internal Thermal Shutdown Circuitry

规格书L6219