The R1500 Series from Ricoh Electronic Devices is a LDO Voltage Regulator with Input Voltage 4 to 24 V, Output Voltage 3 to 12 V, Dropout Voltage 95 to 225 mV, Output Current 0.5 A, Quiescent Current 0.07 mA. Tags: Surface Mount. More details for R1500 Series can be seen below.