The 171021501 from Wurth Elektronik is a DC to DC Converter with Input Voltage 7 to 50 V, Output Voltage 1 2.5 to 15 V, Output Current 1 2.5 A, Output Power 37500 mW, Operating Temperature -40 to 85 Degree C. Tags: Surface Mount, Buck/Step down. More details for 171021501 can be seen below.