Specification Product Name LM2596S 3A Adjustable Step down DC DC Power Supply ModuleInput voltage 3 2 40VOutput Voltage 1 25 35V adjustable Output current rated current 2A maximum 3AConversion efficiency Up to 92 Output ripple 30mVSwitching Frequency 65KHzWorking Temperature 45℃ 85℃Size 43mm x 21mm x 14 length x width x height Connection port IN input positive IN input negativeOut output positive Out output negativeInput voltage range DC 3 2V to 46V input voltage must be 1 5v higher than the output voltage Cant be pushed up Output voltage range DC 1 25v to 35V continuous adjustable high efficiency Max 92 Max output current is 3A Measured 12V input load regulation will be lower 1 when 5V current output 1APackage included 1 x LM2596S 3A Adjustable Step down DC DC Power Supply Module