L6219DSA

Overview

The L6219DSA is a bipolar monolithic integrated circuit designed to control and drive both windings of a bipolar stepper motor or bidirectionally control two DC motors. It features a dual full-bridge power stage capable of sustaining 46 V, with an output current up to 750 mA per winding and peak startup current up to 1 A. The device supports half-step, full-step, and microstepping modes. Operating voltage ranges from 10 V to 46 V, while the logic supply is 4.75 V to 5.25 V. It operates within a temperature range of -40°C to 125°C.

Feature Summary

• Integrates internal pulse-width modulation (PWM) for precise current control and low output saturation voltage.
• Includes built-in protection diodes for current recirculation and cross-conduction protection during switching.
• Features thermal shutdown circuitry that disables outputs when chip temperature exceeds safe operating limits.

Applications

• LS-TTL controlled stepper motor systems
• Microprocessor-controlled stepper motor applications
• Bidirectional brushed DC motor control

Procurement Notes

Verify component authenticity through authorized STMicroelectronics distributors. Confirm package integrity upon receipt. Check datasheet revisions for any updates to electrical characteristics or pinout configurations before finalizing design integration.

Selection Notes

Select this component for applications requiring integrated control and power stages for bipolar stepper motors. Ensure the load voltage does not exceed 46 V and current requirements align with the 750 mA continuous rating. Consider thermal management solutions given the SOIC-24 package constraints.

Part Context

Part of the L6219 series, which includes variants like L6219R and L6219DS. This specific part number denotes the tube-packaged version in a 24-SOIC package. It serves as a complete solution for driving stepper motors with minimal external components compared to discrete driver designs.

Replacement Considerations

E-L6219DSA is listed as a parameter-equivalent alternative. Designers should verify pin compatibility and electrical specifications against the original datasheet before substitution.

FAQ

Does the L6219DSA support microstepping?

Yes, the device supports half-step, full-step, and microstepping modes via its logic inputs and external voltage reference.

What is the maximum supply voltage?

The power stage can sustain a wide voltage range up to 46 V, making it suitable for unstabilized motor supply voltages.