ITEM NAME:DC-DC Buck Converter 5V-23V to 3.3V 5V 9V 12V 3A Step DownPower Supply Module JR #aucsearchbutton #aucsearchbutton:hover { cursor: pointer;.Module nature: non-isolated buck. Output ripple: 30mV (no load). 1 x Mini DC-DC Step-down Module. Load regulation: Â ± 0.5%.