L6219DS-T

Overview

The Allegro MicroSystems L6219DS-T 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 forms a complete control and drive circuit with minimal external components, compatible with LS-TTL or microprocessor systems. The power stage features a dual full bridge capable of sustaining 46 V, including four diodes for current recirculation. Internal PWM controls output current to 750 mA with peak startup current up to 1 A. Operating voltage ranges from 10 V to 46 V, with supply voltage at 4.75 V to 5.25 V. Junction temperature range is -20°C to 150°C.

Feature Summary

• Integrated dual full-bridge power stage with built-in cross-conduction protection and thermal shutdown.
• Internal pulse-width-modulation (PWM) regulates output current with wide control range via logic inputs.
• Supports half-step, full-step, and microstepping modes for precise stepper motor positioning.

Applications

• Bipolar stepper motor control systems
• Bidirectional DC motor drives
• Microprocessor-controlled motion control applications

Procurement Notes

Verify component authenticity through authorized distributors. Confirm package marking matches the 24-SOIC specification. Check datasheet revisions for interface compatibility. Ensure supply voltage and load conditions align with rated limits. Validate thermal management requirements for high-temperature operation.

Selection Notes

Select this component for applications requiring integrated bipolar motor driving with internal current regulation. Suitable for systems needing half-step or full-step resolution without external power transistors. Consider thermal dissipation capabilities when operating near maximum junction temperature limits.

Part Context

The L6219 series belongs to Allegro MicroSystems' line of bipolar motor driver ICs. This specific variant integrates control logic and power MOSFETs in a single package. It replaces discrete driver solutions by combining bridge drivers, PWM controllers, and protection circuits into one compact component.

Replacement Considerations

E-L6219DS and E-L6219DSA are documented similar alternatives from STMicroelectronics. Verify pinout compatibility and electrical parameter alignment before substitution.