E-L6258E

Overview

The E-L6258E is a dual full-bridge motor driver implemented in BCD technology, designed for bipolar stepper and DC motor control. It operates within a supply voltage range of 12V to 40V and delivers a continuous output current of 1.2A per winding, with peak start-up currents up to 1.5A. The device features high-efficiency phase-shift chopping for low current ripple and includes integrated recirculation diodes. It utilizes a PowerSO-36 surface-mount package and incorporates thermal shutdown protection to disable outputs when safe temperature limits are exceeded.

Feature Summary

• Dual DMOS full bridge architecture capable of driving bipolar stepper motor windings or bidirectionally controlling two DC motors
• High-efficiency phase shift chopping mechanism ensuring minimal current ripple at low control levels
• Integrated thermal protection circuitry that automatically disables outputs upon exceeding safe junction temperatures
• TTL/CMOS compatible inputs requiring no external recirculation diodes due to internal power stage design

Applications

• Bipolar stepper motor drive systems
• Bidirectional DC motor control applications
• Microstepping implementations requiring precise current regulation
• General industrial motor control circuits

Procurement Notes

Verify component authenticity through authorized STMicroelectronics distributors. Confirm the specific suffix matches the required electrical specifications. Check for obsolescence status as older variants may be discontinued. Ensure handling procedures account for moisture sensitivity level requirements during storage and reflow processes.

Selection Notes

Select this component for applications requiring integrated power switching without external freewheeling diodes. Consider the 1.2A continuous current limit for load sizing. Evaluate the PowerSO-36 package dimensions for PCB layout constraints. Verify compatibility with existing TTL/CMOS logic levels for input signals.

Part Context

This part belongs to the L6258 series of motor drivers from STMicroelectronics. It represents an evolution in BCD technology integration for motor control. The series focuses on providing complete control and drive solutions with minimal external component count. It targets efficiency improvements in both stepper and DC motor architectures.

Replacement Considerations

Publicly confirmed parameter-equivalent substitutes include E-L6258EA and E-L6258EX. Verify pinout compatibility and thermal characteristics before substitution. Review datasheet updates for any changes in electrical parameters or packaging specifications across these equivalent parts.