L6227DTR

Overview

The L6227DTR is a DMOS dual full bridge motor driver manufactured by STMicroelectronics, designed for robust motor control applications. It integrates isolated DMOS power transistors with CMOS and bipolar circuits on a single chip using BCD technology. The device operates within an 8V to 52V supply voltage range and delivers a peak output current of 2.8A, with a continuous DC current rating of 1.4A. It features a typical RDS(ON) of 0.73 Ω at Tj=25°C and supports operating frequencies up to 100 KHz. The component is housed in a 24-SO package and functions effectively across a junction temperature range of -25°C to 125°C.

Feature Summary

• Integrates two independent constant off-time PWM current controllers for precise chopping regulation.
• Includes non-dissipative overcurrent protection on high-side power MOSFETs to safeguard against fault conditions.
• Features slow decay synchronous rectification to enhance efficiency during motor braking or freewheeling phases.
• Provides comprehensive protection mechanisms including thermal shutdown, cross-conduction protection, and undervoltage lockout.

Applications

• Brushed DC motor control systems
• Bipolar stepper motor drivers
• Industrial automation actuators
• Home appliance motor drives

Procurement Notes

Verify the specific ordering suffix to ensure the correct packaging format, such as tape and reel, matches your assembly requirements. Confirm that the component meets RoHS3 compliance standards if required by your manufacturing regulations. Cross-reference the manufacturer part number with official distributor catalogs to validate authenticity and availability status before finalizing procurement orders.

Selection Notes

Select this component when a fully integrated solution for driving brushed DC or bipolar stepper motors is required. It is suitable for designs needing high voltage operation up to 52V and moderate current capabilities. Consider the 24-SO package constraints for PCB layout and thermal management. Ensure the application frequency remains within the 100 KHz limit for optimal performance and protection functionality.

Part Context

The L6227DTR belongs to the STSPIN L62 series of motor drivers from STMicroelectronics. This series focuses on providing highly integrated solutions for motion control applications. The device utilizes advanced BCD technology to combine power and logic functions efficiently. It serves as a key component in systems requiring reliable motor drive capabilities with built-in safety features.

Replacement Considerations

Consult official STMicroelectronics documentation for verified substitute part numbers. Ensure any replacement maintains compatibility with the 8V-52V supply range and 24-SO package footprint. Verify that alternative components offer similar current ratings and protection features to maintain system integrity.