The L4963 from STMicroelectronics is a DC to DC Converter with Input Voltage 9 to 46 V, Output Voltage 1 5.1 to 36 V, Output Current 1 1500 mA, Operating Temperature -40 to 150 Degree C, Storage Temperature -40 to 150 Degree C. Tags: Surface Mount, Buck/Step down. More details for L4963 can be seen below.