L6225D

Overview

The L6225D is a dual full-bridge motor driver manufactured by STMicroelectronics, designed for brushed DC motor control applications. It utilizes MultiPower-BCD technology to integrate isolated DMOS power transistors with CMOS and bipolar circuits on a single chip. The device operates within an 8V to 52V supply voltage range and features a typical RDS(ON) of 0.73Ω at Tj = 25°C. It supports a peak output current of 2.8A and a continuous DC current of 1.4A per bridge. The component is housed in a 20-SOIC surface-mount package.

Feature Summary

• Integrates fast free-wheeling diodes and non-dissipative overcurrent protection for the high-side PowerMOSFETs.
• Includes thermal shutdown and cross-conduction protection mechanisms to ensure operational safety.
• Supports parallel operation and under-voltage lockout for enhanced system reliability.
• Enables operating frequencies up to 100kHz for efficient motor control.

Applications

• Brushed DC motor control systems
• General-purpose motor drivers
• Industrial automation equipment

Procurement Notes

Verify the specific suffix 'D' confirms the SOIC-20 surface-mount package variant rather than through-hole options like PDIP or PowerSO. Confirm RoHS compliance status and moisture sensitivity level (MSL 3) requirements during storage and handling. Ensure the ordering part number matches the exact pin configuration and thermal characteristics required for the target PCB layout design.

Selection Notes

Select this component when a dual full-bridge driver with integrated power stages is required for low-to-medium power brushed DC motors. Consider the 52V maximum voltage rating and 1.4A continuous current limit against load demands. Evaluate the 20-SOIC package constraints for thermal management and board space availability compared to alternative packages in the L6225 series.

Part Context

The L6225D belongs to the L6225 series of DMOS dual full-bridge drivers from STMicroelectronics. This family is realized in MultiPower-BCD technology, combining power and logic functions. The series offers various package options including PowerDIP20 and PowerSO20, with the 'D' suffix specifically denoting the standard SOIC-20 surface-mount configuration for automated assembly.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing control signals and thermal dissipation requirements if considering alternative motor driver ICs from other manufacturers or different product lines within the same family.