TOOGOO(R) Adjustable Updated DC-DC LM 2596 Converter Buck Step Down Regulator Power Module voltage range: 4-40 v (40 v to limit the highest voltage) Output voltage range:1.25V - 37V (decompression mode, input output must be greater than 2 V above) Output current: 2 A continuous output Output power: the maximum 15 w Ripple frequency: 150 KHZ