LM2673SX-12

Voltage Regulators - DC DC Switching Regulators Overview

The LM2673SX-12 is a SIMPLE SWITCHER® 3-A step-down voltage regulator manufactured by Texas Instruments. It provides a fixed 12 V output with a maximum input voltage of 40 V and a minimum input voltage of 8 V. The device operates at a switching frequency of 260 kHz and delivers up to 3 A of output current. It features adjustable current limit protection and functions within an operating temperature range of -40 °C to +125 °C. The component is housed in a surface-mount TO-263 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated adjustable current limit for enhanced circuit protection
• Fixed 12 V output configuration simplifies design implementation
• High efficiency operation at standard switching frequencies

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Power supply stages for industrial control equipment
• Voltage conversion for automotive electronics

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'SX' against official Texas Instruments documentation to confirm package details and availability. Ensure compatibility with existing thermal management solutions, as the TO-263 package requires adequate heat dissipation. Confirm RoHS compliance status through the manufacturer's latest datasheet before finalizing procurement specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12 V output is required from an 8 V to 40 V input range. The 3 A current capacity suits moderate power applications. Consider the 260 kHz switching frequency for balancing component size and efficiency. Verify that the TO-263 package fits the available PCB real estate and thermal constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

The LM2673 belongs to the SIMPLE SWITCHER family of buck converters. This series is designed for high-efficiency step-down conversion. The LM2673 variant specifically targets 3 A applications. It integrates the switch and control logic into a single monolithic IC. This integration reduces external component count compared to discrete solutions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Consult official substitution guides for equivalent parts. Verify pinout compatibility and electrical parameters such as current rating and input voltage range. Ensure thermal performance matches the original design requirements.