Regulador de comutação DC/DC Texas Instruments LM2674M-5.0/NOPB, saída fixa 5,0 V, SOIC-8

The DC/DC Switching Regulator Texas Instruments LM2674M-5.0/NOPB is a fixed 5.0V step-down (buck) regulator in an SOIC-8 package designed to convert a higher input voltage into a stable 5.0V output. This power management IC integrates switching control and protection features to simplify design of compact power supplies for embedded systems, power modules, and battery-powered devices that require efficient voltage conversion and reliable regulation.

Advantages

The LM2674M-5.0/NOPB provides regulated 5.0V output with high conversion efficiency and a compact SOIC-8 footprint, enabling smaller board area and simplified layout. Integrated switching control reduces the number of external components compared with discrete solutions, and built-in protection features support reliable operation under varying input and load conditions.

Suitable for

• Embedded microcontroller and digital logic power rails
• Battery-powered equipment and portable devices
• Power supply modules for instrumentation and control systems
• Industrial and automotive auxiliary power circuits (where device ratings are appropriate)

Key specifications

• Fixed output voltage: 5.0 V
• Topology: Step-down (buck) switching regulator
• Package type: SOIC-8 surface-mount
• Intended use: Regulated DC output from higher input voltages
• Typical application: Powering 5V logic and peripherals

How to use

Follow the manufacturer’s recommended application schematic for correct placement of the inductor, diode, input and output capacitors and any feedback components. Provide an appropriate input voltage that is above the required dropout for step-down conversion and within the device’s allowable range. Ensure proper PCB layout for switching regulators—keep high-current traces short, place decoupling capacitors close to the device pins, and route the ground return to minimize loop area. Verify thermal conditions and ensure adequate cooling when operating near maximum rated currents.

Recommendations

Use low-ESR capacitors on the input and output, select an inductor with suitable current rating and low series resistance, and include a fast recovery diode or recommended Schottky as specified in application notes. Test the regulator under expected load and transient conditions to confirm stable regulation and to size thermal management appropriately.