L6225PDTR

Overview

The L6225PDTR is a dual full-bridge motor driver IC manufactured by STMicroelectronics, utilizing BiCDMOS technology. It features four half-bridge outputs capable of driving bipolar stepper or brushed DC motors within an 8V to 52V supply range. The device provides a typical on-resistance of 0.73Ω and supports peak output currents up to 2.8A with a continuous DC rating of 1.4A per channel. Designed for surface-mount applications, it operates reliably across a junction temperature range of -25°C to 125°C.

Feature Summary

• Integrates isolated DMOS power transistors with CMOS and bipolar circuits on a single chip for compact control solutions.
• Includes non-dissipative overcurrent protection and thermal shutdown mechanisms to safeguard the high-side PowerMOSFETs.
• Features integrated fast free-wheeling diodes and cross-conduction protection to ensure stable switching operations.
• Supports parallel operation configurations to enhance current handling capabilities in demanding motor drive scenarios.

Applications

• Bipolar stepper motor control systems
• Brushed DC motor drivers
• General-purpose motor control applications

Procurement Notes

Verify that the specific suffix 'P' denotes the PowerSO-20 package and 'T' indicates tape-and-reel packaging when sourcing this component. Confirm compatibility with your PCB footprint requirements, as the PowerSO-20 form factor differs from standard SOIC packages. Ensure that the operating environment stays within the specified thermal limits to maintain device reliability and prevent premature failure due to overheating.

Selection Notes

Select the L6225PDTR when application requirements demand a dual H-bridge configuration with moderate current capabilities up to 1.4A DC per leg. This component is suitable for designs requiring integrated protection features such as thermal shutdown and cross-conduction prevention. Consider the PowerSO-20 package constraints regarding thermal dissipation and board space availability compared to alternative DIP or larger surface-mount options.

Part Context

This part belongs to the STSPIN L62 series of motor drivers, which are designed for robust industrial and consumer applications. The L6225 variant specifically targets bipolar stepper and brushed DC motor drives, offering a balance between performance and integration. It represents a solution for controlling two independent motor channels or one complex bipolar load using a single integrated circuit.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.