LM2673SDX-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2673SDX-ADJ/NOPB is a SIMPLE SWITCHER step-down voltage regulator manufactured by Texas Instruments. It operates with an input voltage range of 8V to 40V and provides an adjustable output voltage from 1.2V to 37V. The device supports a maximum output current of 3A with a fixed switching frequency of 260kHz. It utilizes a VSON-14 surface-mount package and functions within a junction temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-voltage MOSFET enables efficient buck conversion without external driver components
• Fixed 260kHz switching frequency allows for the use of compact passive components
• Adjustable output voltage setting via external resistor network
• Built-in thermal shutdown and current limit protection mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Battery-powered equipment power management
• Industrial control system power supplies
• Telecommunications infrastructure biasing

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number includes the NOPB suffix, which indicates lead-free and RoHS compliance status. Confirm the package designation matches the VSON-14 form factor required for the specific PCB layout. Ensure the ADJ variant is selected when variable output voltage is necessary rather than a fixed voltage option.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when an input supply between 8V and 40V requires conversion to a lower adjustable voltage level. The 3A current capability suits moderate power applications where space constraints favor a small VSON-14 footprint over through-hole packages. Verify that the required output voltage falls within the 1.2V to 37V operational window defined by the datasheet specifications.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2673 family of SIMPLE SWITCHER regulators, designed for high-efficiency DC-DC conversion. The SDX suffix specifically denotes the tape-and-reel packaging format for automated assembly processes. The LM2673 series distinguishes itself through integrated power switches and simplified external component requirements compared to discrete solutions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2673S-ADJ/NOPB offers identical electrical performance in a TO-263-7 surface mount package. LM2673T-ADJ/NOPB provides the same functionality in a TO-220-7 through-hole package. Cross-package replacements require verification of thermal dissipation capabilities and physical mounting constraints.