L6219R

Overview

The L6219R 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 built-in recirculation diodes. The device includes internal pulse-width modulation (PWM) for current control up to 500 mA, peak startup current up to 1 A, and thermal shutdown protection. Operating voltage ranges from 4.75V to 5.25V logic supply and 4.5V to 10V load supply, housed in a 24-SO package.

Feature Summary

• Full integration of control and power stages for simplified system design
• Internal PWM current regulation ensures stable output performance
• Cross-conduction protection prevents simultaneous switching faults
• Thermal shutdown safeguards against overheating conditions

Applications

• Bipolar stepper motor control systems
• Bidirectional DC motor drives
• Microprocessor-controlled motion applications
• LS-TTL compatible interface circuits

Procurement Notes

Verify component authenticity through authorized STMicroelectronics distributors. Confirm the specific suffix 'R' indicates the lower voltage load range variant compared to standard versions. Check datasheet specifications for exact electrical limits before integration. Ensure proper thermal management during operation.

Selection Notes

Select this variant when operating within the 4.5V to 10V load voltage range. Choose over standard versions if system power constraints require lower supply voltages. Verify compatibility with LS-TTL logic levels. Consider the 24-SO package size for PCB layout constraints.

Part Context

Part of the L6219 family of bipolar stepper motor drivers. Shares core architecture with L6219DSA but differs in load voltage specifications. Designed for general-purpose motor control applications requiring integrated drive and logic functions.

Replacement Considerations

E-L6219DSA is listed as a parameter equivalent substitute by STMicroelectronics. Verify pinout and electrical characteristics match before replacement.