LM2673SX-12/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2673SX-12/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 a fixed 12V output at up to 3A. The device integrates a 0.5A internal switch and features adjustable current limiting. It functions at a switching frequency of 260kHz, allowing for the use of small external components. The unit is housed in a TO-263 (D2PAK) package and supports operation from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-efficiency power switch rated for 3A continuous load current.
• Includes built-in thermal shutdown and adjustable current limit protection.
• Utilizes a fixed 260kHz switching frequency to minimize passive component size.

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Input voltage conditioning for industrial controllers
• Power supply stages for communication equipment

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'SX' against official Texas Instruments documentation to confirm pinout and marking details, as standard variants may differ. Ensure the NOPB designation confirms lead-free and RoHS compliance status prior to integration. Cross-reference the datasheet revision date to validate electrical characteristics against your design requirements.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12V output is required from a 40V maximum input rail. It is suitable for designs prioritizing low external component count over variable output flexibility. Consider the TO-263 package for thermal management needs in moderate power applications where surface mount assembly is preferred over through-hole mounting.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2673 family of SIMPLE SWITCHER regulators. It shares architectural similarities with the LM2676 and LM2677 series but offers lower current capacity compared to the 5A variants. The family is characterized by minimal external component requirements and integrated protection features for robust DC-DC conversion.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2673S-12/NOPB serves as a direct functional equivalent within the same package and specification profile. Verify pin compatibility and thermal performance metrics before substitution.