Type /name:LM2596HVS DC-DC step-down moduleInput Voltage:4.5V ~ 53VOutput Voltage:3V ~ 40VOutput Current:3A (max)Conversion efficiency:92%(the highest)Output Ripple:<30mVSwitching frequency:150KHzOperating Temperature:-45 ° ~ +85 °Size:43mm * 21mm * 14mm (L * W* H)IN-IN + inputPositiveInput Negative!Positive outputOUT +OUT-output negativeInput voltage range: DC4.5V to53V (inputvoltagemust be greater thanthe outputvoltageto1.5Vor morehigh.Could notboost)Output voltage range: DC3Vto 40Vvoltage is continuously adjustable, high efficiency(up to 92%)the maximum outputcurrent of3A.Measured12V input, 5Voutputcurrent is 1Aload regulationrate of less than1%Note: This is thestep-down module, the input voltagemust behigher than the outputvoltage.Outputcurrent is greater than2.5A (or outputpower greater than10W)to work long hours, please addheat sink.