L6226QTR

Overview

The L6226QTR is a DMOS dual full bridge driver designed for motor control applications, realized in BCD multipower technology. It integrates isolated DMOS power transistors with CMOS and bipolar circuits on the same chip. The device operates within an input supply voltage range of 8 to 52 V and delivers a peak output current of 2.8 A, with a DC rating of 1.4 A. The typical on-resistance (RDS(on)) is 0.73 Ω at TJ = 25 °C. It supports operating frequencies up to 100 kHz and features thermal shutdown, under-voltage lockout, cross-conduction protection, and programmable high-side overcurrent detection with a diagnostic output.

Feature Summary

• Integrates isolated DMOS power transistors with CMOS and bipolar circuits via BCD multipower technology
• Includes thermal shutdown and non-dissipative overcurrent detection on high-side power MOSFETs
• Provides a diagnostic output for implementing overcurrent protection
• Supports paralleled operation and cross-conduction protection

Applications

• Motor control systems
• Bipolar stepper motor drivers
• Industrial automation actuators

Procurement Notes

Verify that the specific part number suffix 'QTR' corresponds to the tape-and-reel packaging variant as indicated by distributor listings. Confirm compatibility with the QFN32 5x5 package dimensions and pinout against the official STMicroelectronics datasheet. Ensure that the ordering documentation explicitly references the L6226QTR designation to distinguish it from other package options within the L6226 family. Cross-reference the manufacturer's latest revision history for any updates to electrical characteristics or mechanical drawings before finalizing procurement specifications.

Selection Notes

Select this component when a dual full-bridge configuration is required for driving bipolar loads such as stepper motors. The BCD multipower technology offers robust integration of power and control logic. Consider the 2.8 A peak current capability and 0.73 Ω RDS(on) for efficiency requirements. The integrated protection features, including thermal shutdown and overcurrent detection, simplify system design by reducing external component count. Verify that the 8–52 V operating range aligns with the target application's power supply constraints.

Part Context

The L6226QTR belongs to the L6226 series of DMOS dual full bridge drivers manufactured by STMicroelectronics. This series utilizes BCD multipower technology to combine high-voltage power stages with low-voltage control circuitry. The 'QTR' suffix typically denotes the reel packaging format, distinguishing it from other variants like the bare die or different package types within the same functional family. It is categorized under motor controllers and drivers in semiconductor product classifications.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Users should consult the official STMicroelectronics replacement guide or contact technical support for validated alternatives.