The L7983 from STMicroelectronics is a DC to DC Converter with Input Voltage 3.5 to 60 V, Output Voltage 1 0.85 to 60 V, Output Current 1 300 mA, Operating Temperature -40 to 150 Degree C, Storage Temperature -65 to 150 Degree C. Tags: Surface Mount, Buck/Step down. More details for L7983 can be seen below.