ST DCP3601 Ultra-small Monolithic Buck Converter. /Courtesy of STMicroelectronics

STMicroelectronics announced on the 27th the launch of the DCP3601 ultra-compact monolithic buck converter, which adds flexibility to extensive functional integration.

This product supports achieving high conversion efficiency with a simple design that reduces bill of materials (BOM) costs. The converter completes circuit design with only six external components, including an inductor, bootstrap, filter capacitor, and feedback resistors that set the output voltage, as it has built-in power switches and compensation circuits.

The DCP3601, which supports an input voltage range of 3.3V to 36 volts (V) and an output of 1A, can supply power to low-voltage loads in applications such as smart meters, home appliances, and industrial 24V conversion. Through synchronous rectification and a fixed switching frequency of 1 megahertz (MHz), it ensures high efficiency across all operating conditions and load ranges, achieving up to 91% efficiency at 600mA with a 12V input and 5V output.

This converter provides flexibility through a variety of products that offer forced PWM operation to support noise-sensitive applications or a pulse skipping option that consumes minimal power under light loads.


Designers can use the dedicated evaluation board, STEVAL-3601CV1, to advance new projects with the DCP3601. This board comes with screw terminals and headers, making it immediately operational, and supports efficient circuit design with its compact footprint.

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