Power IC voltage regulator Texas Instruments LM2676SX-5.0/NOPB, DC/DC switching regulator, fixed 5.0V, TO-263-7 mounting

Texas Instruments LM2676SX-5.0 is a DC/DC switching voltage regulator that provides a fixed 5.0V output in a TO-263-7 mounting package. Designed for step-down (buck) conversion, this power IC enables efficient voltage regulation from higher input voltages to a stable 5V supply. The device integrates the switching element and control circuitry to simplify board-level power design and reduce external component count when used in compact electronic systems.

Advantages

The LM2676SX-5.0 delivers regulated 5.0V output with high conversion efficiency typical of switching regulators, lowering power dissipation compared with linear regulators. Its integrated switching control and protection features reduce design complexity and improve reliability in continuous operation. The TO-263-7 package provides a compact form factor and thermal conduction suitable for surface-mount board layouts in industrial and embedded applications.

Suitable for

• Board-level voltage regulation for embedded systems
• Power supplies for industrial and automation electronics
• Step-down conversion from higher DC input voltages to 5V
• Compact power modules and single-board designs

Key specifications

• Output voltage: fixed 5.0 V
• Regulator type: DC/DC switching (step-down/buck)
• Package: TO-263-7 surface-mount package
• Integrated switching control and power stage
• Designed for board-level mounting and thermal conduction

How to use

Implement the LM2676SX-5.0 on a PCB according to the manufacturer's recommended layout to ensure stable operation and adequate thermal management. Provide appropriate input decoupling and an output filter network as specified in reference designs to minimize output ripple. Connect input supply, ground, and the output path with suitable trace widths or copper planes to handle expected current. Follow datasheet guidance for any required external inductor, diode, and capacitors to meet transient and stability requirements.

Recommendations

Verify input voltage range and current requirements for your application and confirm thermal considerations on the TO-263-7 package. Use recommended external components and layout practices from Texas Instruments to ensure optimal efficiency and stable 5V output under load.