The L6219R is a bipolar monolithic integrated circuits intended to control and drive both winding of a bipolar stepper motor or bidirectionally control two DC motors.The L6219R with a few external components form a complete control and drive circuit for LS-TTL or microprocessor controlled stepper motor system.The power stage is a dual full bridge capable of sustaining 10V and including four diodes for current recirculation.
A cross conduction protection is provided to avoid simultaneous cross conduction during switching current direction.
An internal pulse-width-modulation (PWM) controls the output current to 500mA with peak start-up current up to 1A. Wide range of current control from 500mA (each bridge) is permitted by means of two logic inputs and an external voltage reference. A phase input to each bridge determines the load current direction. A thermal protection circuitry disables the outputs if the chip temperature exceeds safe operating limits.
- Low output saturation voltage
- Internal pwm current control
- Internal thermal shutdown
- Able to drive both windings of bipolar stepper motor
- Wide voltage range 4.5V to 10V
- Output current up to 500mA each winding
- Built-in protection diodes
- Designed for unstabilized motor supply voltage
- HAlf-step, full-step and microstepp-ing mode
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