The LT3011 from Analog Devices is a LDO Voltage Regulator with Input Voltage 3 to 80 V, Output Voltage 1.24 to 60 V, Dropout Voltage 100 to 550 mV, Output Current 0.05 A, Quiescent Current 0.046 mA. Tags: Surface Mount. More details for LT3011 can be seen below.