LM2673T-12

Voltage Regulators - DC DC Switching Regulators Overview

The LM2673T-12 is a Texas Instruments SIMPLE SWITCHER step-down switching regulator designed for through-hole mounting in a TO-220 package. It accepts an input voltage range of 8V to 40V and provides a fixed 12V output at up to 3A. The device operates with a typical switching frequency of 260kHz, enabling the use of compact external components. It features internal thermal shutdown and current limiting protection. The unit supports operation across an extended temperature range from -40°C to +125°C junction temperature.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic switching regulator with built-in power MOSFET
• Fixed 12V output option eliminates external feedback resistor networks
• Includes thermal shutdown and cycle-by-cycle current limiting protection

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for industrial control systems
• Power supply stages for embedded computing hardware
• Battery-powered equipment requiring efficient voltage stepping

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'NOPB' indicates lead-free and RoHS compliance status. Confirm the 'T' designation corresponds to the specific tape-and-reel or tube packaging variant required for your assembly process. Ensure the fixed 12V output matches your system requirements, as adjustable versions exist within the same family.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12V output is required without external programming resistors. The TO-220 package facilitates heat dissipation for high-current applications. Consider the 260kHz switching frequency for balancing efficiency against passive component size. Verify that the 3A continuous current rating meets the maximum load demand of the target circuit.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2673 series of SIMPLE SWITCHER regulators. The series offers various fixed output voltages and adjustable options. The TO-220 variant is distinct from surface-mount packages like the SD (VSON) or LD (LLP), providing different thermal and mechanical integration characteristics for PCB design.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The LM2673T-12/NOPB is the direct lead-free equivalent. Other fixed voltage variants such as LM2673T-5.0 or LM2673T-3.3 share the same pinout but provide different outputs. Adjustable versions like LM2673T-ADJ require external resistors.