L6219DS

Overview

The Allegro MicroSystems L6219DS 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. An 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 regulating output to 750 mA per winding
• Cross conduction protection to prevent simultaneous switching during direction changes
• Thermal shutdown circuitry that disables outputs when safe operating limits are exceeded

Applications

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

Procurement Notes

Verify component authenticity through authorized channels due to discontinued status. Confirm RoHS compliance variations between original Allegro and STMicroelectronics equivalents. Validate package integrity for 24-SOIC surface mount configuration. Ensure supply chain documentation matches specific manufacturing lot requirements for critical deployments.

Selection Notes

Select this component for applications requiring integrated control and power stages for bipolar stepper motors. Consider the 46 V voltage range and 750 mA current capability for load matching. Evaluate thermal management needs given the junction temperature limits. Verify compatibility with LS-TTL logic levels for interface design.

Part Context

The L6219 series represents a family of bipolar motor drivers originally manufactured by Allegro MicroSystems and later by STMicroelectronics. The L6219DS variant specifically denotes the SOIC-24 package configuration. This component belongs to the broader category of power management ICs focused on motor control solutions.

Replacement Considerations

E-L6219DSA and E-L6219DS013TR from STMicroelectronics are documented as similar replacements.