XL6009 DC-DC Adjustable Step-Up Boost Power Converter Module

Where a buck converter steps voltage down, this XL6009-based module does the opposite, boosting a lower input voltage up to a higher adjustable output, which matters for projects running off a single-cell battery or a low-voltage supply that still needs to power something rated for a higher voltage. The XL6009 chip is a well-documented, widely used boost converter IC, and this module's onboard adjustment lets a builder dial in the exact output voltage a project calls for rather than being locked to one fixed step-up ratio.