E-L6258EX

Overview

The E-L6258EX is a dual full-bridge motor driver implemented in BCD technology, designed for controlling bipolar stepper motors or bidirectional DC motors. It features a DMOS power stage capable of sustaining up to 40V with a continuous output current of 1.5A per winding and peak start-up currents up to 2A. The device operates within a supply voltage range of 12V to 40V and includes integrated recirculation diodes. Key electrical parameters include a typical switching frequency of 18.5kHz, a maximum collector-emitter voltage of 40V, and an operating temperature range from -55°C to 150°C. The component is housed in a 36-pin PowerSO package.

Feature Summary

• High-efficiency phase shift chopping for low current ripple at minimal control levels
• Integrated thermal protection circuitry that disables outputs upon exceeding safe temperature limits
• TTL/CMOS compatible inputs requiring no external recirculation diodes
• Four-quadrant current control suitable for microstepping applications

Applications

• Bipolar stepper motor drive systems
• Bidirectional DC motor control circuits
• Precision motion control platforms requiring microstepping
• Universal motor driver modules

Procurement Notes

Verify the active status of the E-L6258EX prior to procurement, as official documentation indicates it may be obsolete or discontinued. Confirm availability through authorized distributors and check for parameter-equivalent alternatives such as the E-L6258E or E-L6258EA if direct sourcing is unavailable. Ensure all technical specifications align with current design requirements before finalizing orders.

Selection Notes

Select this component for applications requiring high-current driving capabilities with integrated protection features. The wide voltage range and four-quadrant control make it suitable for diverse motor types. Consider the thermal management requirements due to the 150°C junction temperature limit. Verify compatibility with existing logic levels given the TTL/CMOS input interface.

Part Context

The E-L6258EX belongs to the L6258 series of universal motor drivers by STMicroelectronics. It utilizes DMOS technology to provide robust performance in motor control applications. The device integrates both control and power stages, simplifying system design by reducing the need for external components. It is part of a broader family of motor drivers offering various current and voltage ratings.

Replacement Considerations

Public confirmed substitute part numbers include E-L6258E and E-L6258EA. These are listed as parameter-equivalent replacements. Verify pinout and specification compatibility when transitioning to these alternatives.