The MAX25300B from Maxim Integrated is a LDO Voltage Regulator with Input Voltage 1.7 to 5.5 V, Output Voltage 0.6 to 5.3 V, Dropout Voltage 36 mV, Output Current 0.7 A, Quiescent Current 0.0007 to 0.0008 mA. Tags: Surface Mount. More details for MAX25300B can be seen below.