L6258EXTR

Overview

The L6258EXTR 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, an operating temperature range from -55°C to 150°C, and a maximum power dissipation rating of 5.3W. It utilizes a 36-pin PowerSO package.

Feature Summary

• High-efficiency phase shift chopping for low current ripple
• Integrated thermal protection circuitry
• TTL/CMOS compatible inputs without external recirculation diodes
• Four-quadrant current control for microstepping

Applications

• Bipolar stepper motor drive applications
• Bidirectional DC motor control systems
• Microstepping precision positioning circuits
• Industrial automation motor drivers

Procurement Notes

Verify component authenticity through authorized STMicroelectronics distributors. Confirm the specific suffix matches the required tape-and-reel packaging configuration. Ensure all handling procedures comply with electrostatic discharge (ESD) protection standards during storage and assembly processes.

Selection Notes

Select this component when high-current bipolar stepper or DC motor control is required. Consider the extended temperature range variants if operation below -40°C is necessary. Verify that the 36-pin PowerSO footprint aligns with the target PCB layout constraints.

Part Context

This part belongs to the L6258 family of universal motor drivers. It shares functional similarities with the L6258EA variant but differs in specific environmental ratings and package configurations. The series is characterized by its ability to integrate control and power stages into a single compact solution.

Replacement Considerations

Public confirmed substitute part numbers include E-L6258E and E-L6258EA. These are listed as parameter-equivalent alternatives within the manufacturer's ecosystem.