The MIC69303RT from Microchip Technology is a Space Qualified LDO Voltage Regulator with Input Voltage 1.65 to 5.5 V, Output Voltage 0.5 V, Dropout Voltage 500 mV, Output Current 3 A, Temperature operating range -55 to 125 Degree C. Tags: Surface Mount. More details for MIC69303RT can be seen below.