LM2673SD-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2673SD-ADJ/NOPB is a SIMPLE SWITCHER® 3A step-down voltage regulator from 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 features a fixed switching frequency of 260kHz and delivers up to 3A of output current. It is housed in a 14-VSON (5x6) surface-mount package. The component supports a junction temperature range from -40°C to +125°C and includes internal features such as adjustable current limit and thermal shutdown for robust protection.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated SIMPLE SWITCHER controller with fixed 260kHz switching frequency
• Adjustable current limit capability for flexible load protection
• Thermal shutdown protection to prevent overheating under fault conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Industrial control power supplies
• Telecommunications equipment backend power distribution

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix NOPB indicates lead-free/RoHS compliance. Confirm the SD package denotes the 14-VSON form factor. Ensure the ADJ designation matches the required adjustable output configuration rather than a fixed voltage variant. Cross-reference the manufacturer part number against official TI documentation to avoid counterfeit components.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when an input voltage up to 40V and continuous 3A output are required. The VSON package suits space-constrained PCB layouts. Verify that the 260kHz frequency aligns with external inductor and capacitor selection requirements. Consider thermal performance if operating near maximum ambient temperatures or current limits.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2673 family of non-synchronous buck converters. It differs from the LM2679, which offers 5A output, and the LM2676, which typically handles lower currents. The SD suffix specifically identifies the small outline no-lead package variant within the broader LM2673 product line.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2673SDX-ADJ/NOPB: Identical functional specification with reel packaging instead of tube.

Voltage Regulators - DC DC Switching Regulators FAQ

Is the LM2673SD-ADJ a synchronous rectifier?

No, the LM2673 is a non-synchronous buck converter.

What is the minimum input voltage for operation?

The minimum recommended input voltage is 8V.