LM2673S-12/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2673S-12/NOPB is a SIMPLE SWITCHER 3A step-down voltage regulator manufactured by Texas Instruments. It operates with a fixed 12V output and supports an input voltage range from 8V to 40V. The device utilizes a buck topology with a switching frequency of 260kHz. It is housed in a TO-263-7 (D2PAK) surface-mount package. The component functions within a junction temperature range of -40°C to +125°C and includes adjustable current limit protection.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated adjustable current limit for enhanced circuit protection
• Fixed 12V output configuration for simplified design
• High efficiency operation at 260kHz switching frequency

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Input voltage step-down for industrial control circuits
• Power supply stages for communication equipment

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix NOPB indicates lead-free/RoHS compliance as per Texas Instruments documentation. Confirm the S suffix corresponds to the TO-263-7 surface mount package variant. Ensure the -12 designation matches the required 12V fixed output specification for your application design.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12V output is required from an 8V to 40V input source. The 3A current rating suits moderate power applications. The TO-263 package offers thermal advantages over smaller footprints. Verify that the 260kHz frequency aligns with your passive component selection constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2673 series of SIMPLE SWITCHER regulators. It shares the core architecture with other variants like the LM2673T-5.0 but differs in package type and output voltage. The series is characterized by high efficiency and integrated protection features, distinguishing it from older linear regulator technologies.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible substitutes within the same family include LM2673S-ADJ/NOPB for adjustable output or LM2673S-5.0/NOPB for 5V output. Cross-family replacements require verification of current ratings and thermal performance.