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, originally developed under the National Semiconductor brand. This component operates as a buck converter with a fixed 12V output and supports up to 3A of continuous load current. It functions within an input voltage range of 8V to 40V and utilizes a 260kHz switching frequency. The device is housed in a TO-220-7 through-hole package and is rated for operation between -40°C and +125°C junction temperature.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic power switch eliminates the need for external high-voltage components
• Fixed internal feedback network ensures stable regulation without external resistors
• Built-in thermal shutdown and adjustable current limiting protect against overload conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for industrial control systems
• Distributed power architectures requiring efficient step-down conversion
• Battery-powered equipment utilizing higher voltage sources

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the ordering suffix /NOPB confirms lead-free and RoHS compliance status. Confirm the manufacturer designation aligns with Texas Instruments, as National Semiconductor assets were acquired. Ensure the specific suffix matches the required package type and environmental rating before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 12V output is required from an 8V to 40V source. The TO-220-7 package suits applications needing robust thermal dissipation via heatsinking. Consider alternative packages like VSON if board space constraints prohibit through-hole mounting.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2673 family of SIMPLE SWITCHER regulators. It shares core architecture with other variants in the series but differs in output voltage configuration and physical packaging. The TO-220 variant provides distinct thermal advantages over surface-mount counterparts.

Voltage Regulators - DC DC Switching Regulators FAQ

Does the LM2673T-12/NOPB support adjustable output voltages?

No, this specific model features a fixed internal feedback network set to 12V. Adjustable versions require different part numbers.

What is the maximum input voltage for this regulator?

The device accepts input voltages up to 40V, making it suitable for 24V and 48V nominal systems.