E-L6258

Overview

The E-L6258 is a dual full-bridge motor driver implemented in BCD technology, designed for controlling bipolar stepper motors or bidirectional DC motors. 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 reaching 1.5A. The device integrates thermal protection that disables outputs when safe temperature limits are exceeded. Packaged in a 36-pin PowerSO surface-mount configuration, it supports precision PWM control and four-quadrant current operation.

Feature Summary

• Integrates a dual DMOS full bridge capable of driving both windings of a bipolar stepper motor or two DC motors bidirectionally.
• Features high-efficiency phase shift chopping to minimize current ripple at low control levels, supporting microstepping applications.
• Includes built-in cross-conduction protection and thermal shutdown circuitry to safeguard the device under fault conditions.
• Utilizes TTL/CMOS compatible inputs and eliminates the need for external recirculation diodes through integrated internal components.

Applications

• Bipolar stepper motor control systems
• Bidirectional DC motor drive circuits
• Microstepping motion control applications
• General-purpose motor driver modules

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm package integrity and pin alignment for the 36-pin PowerSO format. Ensure storage conditions comply with moisture sensitivity level requirements prior to soldering. Cross-reference part numbers with authorized distributors to avoid counterfeit inventory.

Selection Notes

Select this component for applications requiring precise PWM-controlled current regulation in bipolar stepper or DC motor setups. The integrated thermal protection and cross-conduction safeguards make it suitable for robust industrial environments. Ensure the system voltage remains within the 12V to 40V operational window and that heat dissipation strategies accommodate the power dissipation characteristics of the PowerSO package.

Part Context

The E-L6258 belongs to the L6258 series of universal motor drivers from STMicroelectronics. It represents an evolution in BCD technology integration, combining logic and power stages into a single compact solution. This series is engineered to simplify motor control designs by reducing external component count while maintaining high efficiency and reliability for demanding electromechanical applications.

Replacement Considerations

Publicly confirmed parameter-equivalent substitutes include E-L6258E and E-L6258EA. Verify electrical compatibility and pinout correspondence before substitution. Note that availability status may vary between these variants and the original model.