The SLW05B-09 from Mean Well is a DC to DC Converter with Input Voltage 18 to 36 V, Output Voltage 1 9 V, Output Current 1 55.6 to 556 mA, Output Power 5000 mW, Operating Temperature -25 to 71 Degree C. Tags: Through Hole, Buck/Step down. More details for SLW05B-09 can be seen below.