L6743QTR

Overview

The L6743QTR is a high-current MOSFET driver manufactured by STMicroelectronics, designed for synchronous rectified converters. It features dual outputs supporting both high-side and low-side N-channel MOSFETs. The device operates with a supply voltage range of 5V to 12V and supports logic input levels with VIL at 0.8V and VIH at 2V. It is rated for an operating temperature range from 0°C to +125°C and is housed in a 10-DFN (3x3) surface-mount package.

Feature Summary

• Dual MOSFET driver configuration optimized for synchronous rectified converters
• High driving current capability to ensure fast external MOSFET switching
• Non-inverting half-bridge gate driver architecture

Applications

• Synchronous rectified DC-DC converters
• Power management systems requiring high-speed MOSFET control
• Industrial power supplies

Procurement Notes

Verify the specific suffix 'QTR' indicates tape and reel packaging when ordering. Confirm the 10-DFN (3x3) package dimensions match your PCB footprint requirements. Ensure the design accommodates the 0°C to +125°C operating temperature range for thermal management. Cross-reference the datasheet for exact pinout configurations to prevent installation errors.

Selection Notes

Select this component for applications requiring dedicated high-current drive for synchronous rectification. It is suitable where non-inverting logic inputs are required alongside robust high-side and low-side driving capabilities. Consider the 5V to 12V supply range compatibility with your system's control logic and power rails before integration.

Part Context

This part belongs to the L6743Q series of PMIC gate drivers from STMicroelectronics. It is categorized under integrated circuits specifically designed for power management and interface functions. The device serves as a specialized solution for driving power stages in efficient converter topologies.

Replacement Considerations

Consult official STMicroelectronics documentation for verified substitute part numbers. Do not assume functional equivalence with other generic half-bridge drivers without verifying pinout, current ratings, and electrical specifications against the original datasheet.

FAQ

What type of MOSFETs does the L6743QTR support?

It supports N-channel MOSFETs for both high-side and low-side configurations.

Is the L6743QTR inverting or non-inverting?

The L6743QTR is a non-inverting half-bridge gate driver.