E-L6258EA

Overview

The E-L6258EA is a dual full-bridge motor driver implemented in BCD technology, designed for driving bipolar stepper motors or bidirectional DC motors. It features a DMOS power stage capable of withstanding up to 40V supply voltage. The device delivers a continuous output current of 1.5A per winding, with peak start-up currents reaching 2A. It incorporates precision PWM control and phase shift chopping to minimize current ripple at low levels. Integrated protections include thermal shutdown and cross-conduction prevention. The unit operates within an extended temperature range starting from -40°C and accepts TTL/CMOS compatible inputs.

Feature Summary

• Dual full-bridge architecture enabling independent control of two DC motors or both windings of a bipolar stepper motor
• High-efficiency phase shift chopping mechanism ensuring minimal current ripple during low-current operation
• Integrated thermal protection circuitry that automatically disables outputs when safe temperature limits are exceeded
• Built-in cross-conduction protection and internal recirculation diodes eliminating the need for external components

Applications

• Bipolar stepper motor control systems requiring microstepping capabilities
• Bidirectional DC motor drives for industrial automation
• Precision motion control applications utilizing four-quadrant current control
• General-purpose motor driver circuits integrated with TTL/CMOS logic interfaces

Procurement Notes

Verify the specific suffix EA against official STMicroelectronics documentation to confirm package type and temperature grade compatibility. Ensure the ordering part number matches the exact electrical specifications required for the target application. Cross-reference datasheet revisions to validate pinout and functional integrity before integration into design schematics.

Selection Notes

Select this component for applications requiring robust high-current drive with integrated protection features. The wide voltage range supports various power supply configurations. Consider the thermal management requirements due to the high current capability and ensure adequate heat dissipation for continuous operation near the maximum rated limits.

Part Context

This part belongs to the L6258 family of universal motor drivers manufactured by STMicroelectronics. The family utilizes BCD technology to combine high-voltage power stages with low-voltage control logic on a single chip. This integration simplifies the design of complete motor control systems by reducing the number of external components needed.

Replacement Considerations

Public confirmed substitute part numbers include E-L6258E and E-L6258EX. Verify parameter equivalence and package compatibility before substitution.