LM2673T-5.0

Voltage Regulators - DC DC Switching Regulators Overview

The LM2673T-5.0 is a monolithic integrated circuit from the SIMPLE SWITCHER family, functioning as a step-down switching regulator. It provides a fixed 5 V output with a maximum load current of 3 A. The device operates at a switching frequency of 260 kHz and supports an input voltage range up to 40 V. It utilizes a TO-220-7 through-hole package and includes internal features such as adjustable soft-start and current limit.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated power switch capable of delivering 3 A continuous load current
• Fixed 5 V output configuration for simplified design
• Internal adjustable soft-start limits inrush current during startup
• Built-in current limit protects against short circuits and overloads

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Pre-regulator stages for downstream linear regulators
• Battery-powered equipment requiring efficient voltage conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation carefully, as National Semiconductor was acquired by Texas Instruments. Confirm that the specific part number corresponds to the legacy National Semiconductor production run rather than the TI equivalent. Ensure the suffix matches the required package type and temperature rating for your specific application requirements.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5 V output is required with high current capability in a through-hole format. The 260 kHz frequency allows for smaller external passive components compared to lower-frequency alternatives. Consider thermal management requirements due to the power dissipation inherent in buck topologies under heavy loads or high input-output voltage differentials.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2673 series of SIMPLE SWITCHER regulators. It shares architectural similarities with other members like the LM2676 but differs in switching frequency and package options. The series is designed for ease of use with minimal external component count, targeting industrial and commercial applications requiring reliable DC-DC conversion.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The LM2673T-5.0/NOPB is the direct lead-free replacement manufactured by Texas Instruments. Other compatible parts within the same family include the LM22673 variants, though these may differ in switching frequency or package style.