The PDC1203703 is a DC/DC power converter that takes 12V DC input and will output 3.7V 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 27 x 14mm with insulated plastic heat-sink enclosure. Cost effective for DVD, GPS, LED Panels, etc.