The PDC2405006U2S is a DC/DC power converter that takes 12-24V DC input and will output 5V DC. Cuts DC power to create low amperage, regulation output. Low heat, with synchronous rectification technology. Full load efficiency above 90%, small size, just 46 x 32 x 22mm with insulated plastic heat-sink enclosure. Cost effective for USB compatible hardware, iPhone/iPod, or Samsung/Android.