DC-DC Buck-Mode Power Module (5.5~28V to 3.3V 2.4A)

This DC-DC buck-mode step-down power module converts an input of 5.5V to 28V down to a stable 3.3V output at up to 2.4A peak current. Designed with an ultra-compact footprint and a 0.5MHz switching frequency, it is ideal for makers, hobbyists, and students needing reliable regulated power for microcontrollers and embedded electronics.

Wide input step-down conversion

The module accepts an input voltage range from 5.5V to 28V DC, allowing you to step down high-capacity and high-voltage battery packs safely. To maintain reliable operation under heavier loads, raising the minimum input voltage is recommended.

Precise and steady 3.3V output

Supplying a fixed 3.3V output with a tight accuracy of plus-or-minus 0.1V, the board prevents long-term voltage drift. It handles peak load currents up to 2.4A while drawing an ultra-low quiescent no-load current of only 0.5mA.

Compact and flexible mounting

Measuring just 16.5 by 22mm, this tiny board embeds seamlessly into compact electronics enclosures. It supports both direct chip-mounting and standard 2.54mm pin plug-in connections for versatile assembly.

Multi-purpose project power

The non-isolated regulator is designed to power controller mainboards, DIY current sources, floodlights, toy cars, communication gear, and digital radios. It can also be combined with multi-cell batteries to construct custom mobile power solutions.

Durable operating specifications

Engineered for long-term reliability with a rated service life of 50,000 hours, the unit operates across a wide temperature range of -20 to +85 degrees Celsius. Sustained loads of 3A or higher must be avoided to prevent damage and maintain component life.