The B1509LS-1WR3 from MORNSUN is a DC to DC Converter with Input Voltage 13.5 to 16.5 V, Output Voltage 1 9 V, Output Current 1 12 to 111 mA, Output Power 1000 mW, Operating Temperature -40 to 105 Degree C. Tags: Through Hole, Buck/Step down. More details for B1509LS-1WR3 can be seen below.