LM2674MX-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2674MX-3.3/NOPB is a Texas Instruments SIMPLE SWITCHER power converter featuring a fixed 3.3V output and a maximum output current of 500mA. It operates as a high-efficiency step-down voltage regulator with an input voltage range of 8V to 40V. The device utilizes a buck topology and supports a switching frequency of 275kHz. Packaged in an 8-pin SOIC (MSOP) surface-mount format, it functions within a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic switch for simplified design
• Fixed internal feedback network for stable regulation
• Thermal shutdown protection for reliability

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation modules
• Battery-powered equipment power supplies
• General-purpose DC/DC conversion stages

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'MX' corresponds to the MSOP package variant rather than standard SOIC. Confirm 'NOPB' indicates lead-free and RoHS compliance status. Ensure the fixed 3.3V output matches system requirements, as adjustable versions exist within the same family. Cross-reference datasheet revision dates for updated thermal characteristics.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact surface-mount solution is required for 500mA loads. The fixed 3.3V output eliminates external resistor networks. Consider the 275kHz switching frequency for balancing component size against noise. Verify input voltage stays within the 8V to 40V operational window for optimal efficiency.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2674 SIMPLE SWITCHER family, designed for high-efficiency step-down applications. It serves as a direct replacement for older National Semiconductor equivalents. The MX suffix denotes the small outline micro-package, distinguishing it from through-hole or larger surface-mount variants like the N or M series.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2674M-3.3/NOPB offers identical electrical performance in a larger SOIC-8 package. LM2674N-3.3/NOPB provides the same functionality in a DIP-8 through-hole package. For adjustable output needs, consider LM2674MX-ADJ/NOPB.