LM2673T-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2673T-3.3/NOPB is a SIMPLE SWITCHER step-down voltage regulator from Texas Instruments, housed in a TO-220-7 through-hole package. It provides a fixed 3.3 V output with a maximum current of 3 A. The device operates with an input voltage range of 8 V to 40 V and features an internal switching frequency of 260 kHz. It includes adjustable current limiting and functions as a buck converter within a junction temperature range of -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated adjustable current limit for enhanced circuit protection
• Fixed 3.3 V output configuration for standard logic power supplies
• High efficiency operation at the 260 kHz switching frequency

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for digital systems
• Power supply stages for microprocessors and FPGAs
• General-purpose 3.3 V distribution networks

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix /NOPB indicates lead-free and RoHS compliance. Confirm the 'T' designation corresponds to the TO-220-7 through-hole package variant rather than surface-mount options. Ensure the specific part number matches the required fixed 3.3 V output specification.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a robust through-hole solution is required for high-current 3.3 V generation. The TO-220-7 package facilitates thermal management via heatsinking. Verify that the 40 V maximum input rating aligns with the source voltage and that the 260 kHz frequency suits the external inductor selection.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2673 family of SIMPLE SWITCHER regulators, designed for efficient step-down conversion. The series offers various output voltages and packages, including surface-mount and through-hole options. The LM2673T variant specifically targets applications requiring durable mounting and high thermal performance.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2673T-3.3X/NOPB (Texas Instruments)

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum input voltage for the LM2673T-3.3?

The maximum input voltage is 40 V.

Does the LM2673T-3.3 include overcurrent protection?

Yes, it features an adjustable current limit function.