LM2673T-12/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2673T-12/NOPB is a SIMPLE SWITCHER step-down voltage regulator manufactured by Texas Instruments. It operates as a buck converter with a fixed 12 V output and supports up to 3 A load current. The device accepts an input voltage range of 8 V to 40 V and switches at a frequency of 260 kHz. It utilizes a TO-220-7 through-hole package and functions within a junction temperature range of -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic power switch for simplified design
• Fixed internal switching frequency reduces external component count
• Built-in thermal shutdown and current limit protection

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation in distributed power systems
• Standard 5 V, 12 V, or 24 V bus conversion
• Pre-regulation for switching regulators

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'NOPB' confirms lead-free and RoHS compliance. Confirm the '-12' designation specifies the fixed 12 V output variant rather than the adjustable version. Ensure the 'T' indicates the TO-220-7 through-hole package type required for your assembly process.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 12 V output is required from an 8 V to 40 V input source. It is suitable for applications needing up to 3 A continuous current with minimal external components. Consider the TO-220-7 package for through-hole mounting requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2673 series of SIMPLE SWITCHER regulators. It shares the same topology and control architecture as other variants in the family but is specifically configured for a fixed 12 V output. It differs from the LM2676 and LM2677 series primarily in its maximum output current rating of 3 A versus 5 A.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2673T-12/NOPB is the direct equivalent. LM2673S-12/NOPB offers the same electrical performance in a surface-mount TO-263 package.