LM2674M-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2674M-3.3/NOPB is a Texas Instruments SIMPLE SWITCHER power converter designed as a high-efficiency 500 mA step-down voltage regulator. It operates with an input voltage range of 8 V to 40 V and provides a fixed 3.3 V output. The device integrates a 0.5 A switch and features a switching frequency of 275 kHz. Packaged in an 8-pin SOIC surface-mount package, it supports operation from -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a 0.5 A internal power switch for simplified design
• Utilizes SIMPLE SWITCHER architecture for minimal external component requirements
• Operates at a fixed 275 kHz switching frequency

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Battery-powered equipment requiring efficient step-down conversion
• Industrial control systems operating within wide input voltage ranges

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix /NOPB indicates lead-free and RoHS compliance. Confirm the specific output voltage variant matches the application requirement, as the LM2674 series includes multiple fixed voltage options. Ensure the SOIC-8 package footprint aligns with the PCB layout specifications before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V output is required with up to 500 mA load current. It is suitable for designs prioritizing high efficiency and reduced external component count over adjustable output flexibility. Consider the 40 V maximum input rating and thermal management requirements for the SOIC package in the final system design.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2674 family of SIMPLE SWITCHER regulators. It shares architectural similarities with the LM2675 but offers lower current capability. The device represents a standard solution for medium-power buck conversion applications requiring robust performance across industrial temperature ranges.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2674M-5.0/NOPB: Same package and current rating with different fixed output voltage.

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum input voltage for the LM2674M-3.3?

The maximum input voltage is 40 V.

Does the LM2674M-3.3 support adjustable output voltage?

No, the LM2674M-3.3 provides a fixed 3.3 V output. Adjustable versions are available in the LM2674 series.