L6219DSTR-T

Overview

The Allegro MicroSystems L6219DSTR-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 for LS-TTL or microprocessor-controlled systems with minimal external components. The power stage is a dual full bridge capable of sustaining 46 V, including four diodes for current recirculation. Internal pulse-width-modulation (PWM) controls the output current to 750 mA, with peak startup current up to 1 A. The device supports half-step, full-step, and microstepping modes.

Feature Summary

• Dual full-bridge power stage with built-in protection diodes for current recirculation
• Internal PWM current control with adjustable range via logic inputs and external reference
• Cross-conduction protection to prevent simultaneous switching during direction changes
• Integrated thermal shutdown circuitry to disable outputs at excessive temperatures

Applications

• Bipolar stepper motor control systems
• Bidirectional DC motor drives
• LS-TTL compatible motor control interfaces
• Microprocessor-based motion control applications

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status as historical data indicates variations between non-compliant and compliant versions. Check package integrity for the 24-SOIC form factor. Ensure the specific suffix matches required environmental specifications before integration into production designs.

Selection Notes

Select this component for applications requiring integrated bipolar motor driving with internal current regulation. Consider the 46 V voltage rating and 750 mA continuous current capability. Evaluate compatibility with LS-TTL logic levels. Verify thermal management requirements due to internal shutdown features. Confirm package suitability for surface mount assembly processes.

Part Context

The L6219 series represents a family of bipolar motor driver ICs from Allegro MicroSystems. The DSTR-T variant specifically denotes the tape and reel packaging configuration for automated assembly. This part integrates control logic and power MOSFETs into a single solution, simplifying design compared to discrete implementations.

Replacement Considerations

E-L6219DSA and E-L6219DS are documented similar alternatives from STMicroelectronics. Verify pinout compatibility and electrical parameter alignment before substitution. Cross-reference datasheets for differences in operating temperature ranges and packaging specifications.