LM2673S-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2673S-5.0/NOPB is a Texas Instruments SIMPLE SWITCHER step-down voltage regulator operating at a fixed switching frequency of 260 kHz. It provides a fixed output voltage of 5 V with a maximum output current capability of 3 A. The device accepts an input voltage range from 8 V to 40 V and utilizes a TO-263-7 surface-mount package. It features integrated thermal shutdown and adjustable current limiting, ensuring reliable operation within a junction temperature range of -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic buck converter topology for efficient step-down regulation
• Built-in adjustable current limit and thermal shutdown protection mechanisms
• Fixed 260 kHz switching frequency enabling the use of compact external components

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation in distributed power supply architectures
• Pre-regulation stages for linear post-regulators
• Battery-powered systems requiring efficient voltage conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'S' corresponds to the TO-263-7 surface mount package rather than other variants like 'T' (TO-220) or 'SD' (VSON). Confirm that the '-5.0' designation matches the required 5 V fixed output voltage. Ensure the 'NOPB' suffix indicates lead-free and RoHS compliance status as specified by the manufacturer's current documentation standards.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5 V output is required from an 8 V to 40 V input source with up to 3 A load current. The 260 kHz frequency allows for smaller inductors compared to lower-frequency regulators. Consider the TO-263-7 package for its thermal performance and ease of mounting on heatsinks if high continuous current is expected.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2673 series of SIMPLE SWITCHER regulators, which are designed for high-efficiency DC-DC conversion. The series includes various output voltage options and package types, such as through-hole and surface-mount versions, catering to different board space and thermal management requirements within industrial and consumer electronics applications.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible replacements within the same family include LM2673S-ADJ/NOPB for adjustable output or LM2673S-3.3/NOPB for a 3.3 V fixed output. Cross-series alternatives like the LM2676 offer similar functionality but may differ in switching frequency or package dimensions.