The single-ended primary-inductor converter (SEPIC) is a type of DC/DC converter that allows the electrical potential (voltage) at its output to be greater than, less than, or equal to that at its input. This is one of our favorite modules because it offers buck/boost capability, current limiting, and high operating efficiency.
Please note that the item is shipped without the heatsink attached. Simply remove the adhesive backing from the heatsink and place it on the board as shown in the product photo.