Renesas offers a wide portfolio of high-performance buck regulators with integrated FETs. A buck converter, also known as a step-down converter, is a DC/DC power converter that provides voltage step down and current step up. The converter reduces the voltage when the power source has a higher voltage than Vout of the regulator. A buck converter generally provides the most efficient solution with the smallest external components.

Unsure if a low powered linear regulator or highly efficient switching regulator is a better option for your design? Learn more about Linear vs. Switching Regulators.

Product Selector: Buck Regulators (Integrated FETs)

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Type Title Date
Brochure PDF 19.79 MB 日本語
White Paper PDF 1.07 MB
White Paper PDF 468 KB
White Paper PDF 526 KB
White Paper PDF 378 KB
White Paper PDF 431 KB 简体中文
Application Note PDF 279 KB
7 items
Compact Buck Regulators with COT Control

Renesas’ RAA211230/320 family of synchronous buck regulators are integrated with current mode constant on-time (COT) control which enables fast transient response while shrinking the output filter size. Visit to learn more about how these high performance, compact and pin-compatible COT regulators will make designing your power supply easy!