SMAKN DC-DC Buck Converter 7-35V to 1.25-30V 15W CC/CV Module for LED Drive&Charging Module Properties: non-isolated step-down constant current, constant voltage module (CC CV) charging module Input voltage:7-35V Output voltage:1.25-30V(Continuously adjustable) Output current:Max 3A(high than 15W need heat sink) Constant current range:0-3A(Adjustable)