LM2743MTCX

DC DC Switching Controllers Overview

The LM2743MTCX is a low voltage N-channel MOSFET synchronous buck regulator controller IC manufactured by Texas Instruments, formerly National Semiconductor. It operates within an input supply range of 2.2V to 16V and supports switching frequencies from 50kHz to 1MHz. The device utilizes voltage mode control for positive output step-down conversion. It is housed in a 14-TSSOP package and functions as a dedicated DC-DC switching controller designed for efficient power management applications requiring precise regulation.

DC DC Switching Controllers Feature Summary

• Synchronous buck topology utilizing external N-channel MOSFETs for high efficiency
• Voltage mode control architecture for stable regulation
• Integrated tracking capability for multi-rail system sequencing

DC DC Switching Controllers Applications

• Positive output step-down DC-DC conversion systems
• Low voltage power management for embedded electronics
• Multi-rail power supplies requiring synchronized sequencing

DC DC Switching Controllers Procurement Notes

Verify the manufacturer origin carefully, as the component was originally produced by National Semiconductor before its acquisition by Texas Instruments. Ensure the specific suffix matches the required package type and temperature rating. Confirm that the supplier provides official datasheets referencing the correct part number to avoid confusion with similar family members or non-compliant substitutes.

DC DC Switching Controllers Selection Notes

Select this controller when designing synchronous buck converters requiring input voltages up to 16V. It is suitable for applications needing adjustable switching frequencies between 50kHz and 1MHz. Consider the 14-TSSOP package constraints for PCB layout. This component is appropriate for designs prioritizing efficiency through synchronous rectification rather than integrated internal switches.

DC DC Switching Controllers Part Context

This component belongs to the LM2743 series of low voltage synchronous buck regulators. It represents the transition period where National Semiconductor products were integrated into Texas Instruments' portfolio. The device serves as a standalone controller, distinct from integrated power stage solutions, allowing designers to select external MOSFETs optimized for specific current and thermal requirements.

DC DC Switching Controllers Replacement Considerations

The LM2743MTCX/NOPB is the equivalent lead-free version of this component. Verify compatibility if environmental compliance is required. No other direct functional substitutes are confirmed in public documentation without evaluating specific circuit redesign requirements.