LM2674MX-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2674MX-3.3 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, enabling the use of compact external components. Packaged in a surface-mount MSOP-8 format, it supports operation from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a 0.5 A power switch for simplified design
• Utilizes SIMPLE SWITCHER architecture for minimal external component count
• Fixed 3.3 V output option eliminates feedback resistor selection

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 ranges

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (e.g., NOPB) against the manufacturer's current datasheet to confirm lead-free status and exact package dimensions. Ensure the ordering part number matches the required thermal performance and pin configuration for your PCB layout.

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 applications where input voltages vary between 8 V and 40 V. Consider the MSOP-8 package constraints for thermal management and board space availability compared to larger packages.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2674 family of SIMPLE SWITCHER converters. It shares architectural similarities with the LM2675 but offers lower current capability. The series is known for integrating protection features and simplifying buck converter design through internal compensation and switching elements.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include LM2674M-3.3/NOPB or LM2674SX-3.3/NOPB. Verify pin compatibility and thermal characteristics before substitution. Alternative families like LM2596 may require significant circuit redesign due to different pinouts and frequencies.