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Power ICs: microBUCK® Voltage Regulator

Scalability, ease of use and high efficiency

Vishay’s microBUCK® DC/DC Regulators offer flexibility and integration while maintaining high efficiency. This portfolio reduces costs in designs with a selection of high-density parts with common pinouts. This allows applications to scale for the best combination of cost and performance.

Vishay microBUCK® Integrated Voltage Regulators accommodate a variety of applications, including computing, consumer electronics, telecom, and industrial and the Series included are the SiC43x, SiC44x, SiC45x, SiC46x, SiC47x.

Key Advantages

  • Industry leading MOSFET Technology
    • High-side Very low Qsw and Qgd reduce switching-related power loss
    • Low-side Monolithic Schottky improves reverse recovery
    • Very low on-resistance RDS(on) with high density process
  • Innovative Control IC Design
    • Wide operating voltage (4.5V – 60V)
    • PMBus 1.3 interface with telemetry available for SiC45x series
    • Power save / Ultrasonic mode → high efficiency at light loads
    • Fast transient response (COT-VM)
    • Full protection set (OC, OV, OT, and UV)
  • Advanced Multi Chip Packaging
    • Thermally enhanced Leadframe QFN package
    • A single CU clip forms the SW node connection, resulting in reduced source inductance and lower switching losses

Welcome to Future Picks

Future Picks is a brand initiative dedicated to curating and showcasing best-selling and emerging products. Future aims to introduce our customers to the latest and most promising electronic components and solutions. We carefully select parts that reflect trends and complement each other.



microBUCK® voltage regulators commonly feature key components such as high-stability thin-film chip resistors in the feedback network, ensuring precise resistance for accurate voltage regulation. Power inductors within the buck converter topology manage High-current flow while regulating output voltage efficiently. Capacitors play crucial roles in stabilizing input and output voltages, filtering noise, and ensuring a stable power source. The meticulous selection of components, considering scalability, efficiency, precision, high-current, high-energy, wide input voltage, and power densities, enables the design of a robust and reliable microBUCK® voltage regulator that meets the diverse demands of modern power supply applications.


Vishay — MicroBUCK Diagram


Vishay — PowerCAD Simulation Tool

PowerCAD Simulation Tool is a free online tool that designers can use to accelerate their circuit design and enhance confidence for a first time success. This tool allows the user to see online schematics, functional analysis tools, simulation waveforms, and more.


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