The LDD-300HS from Mean Well is a DC to DC Converter with Input Voltage 9 to 56 V, Output Voltage 1 2 to 52 V, Output Current 1 300 mA, Operating Temperature -40 to 85 Degree C, Storage Temperature -55 to 125 Degree C. Tags: Surface Mount, Buck/Step down. More details for LDD-300HS can be seen below.