The LT3012B from Analog Devices is a LDO Voltage Regulator with Input Voltage 4 to 80 V, Output Voltage 1.24 to 60 V, Dropout Voltage 160 to 620 mV, Output Current 0.25 A, Quiescent Current 0.04 mA. Tags: Surface Mount. More details for LT3012B can be seen below.