The NJU7223DL1-18 from Nisshinbo Micro Devices is a LDO Voltage Regulator with Input Voltage 18 V, Output Voltage 1.8 V, Dropout Voltage 400 to 600 mV, Output Current 0.7 A, Quiescent Current 0.03 to 0.06 mA. Tags: Surface Mount. More details for NJU7223DL1-18 can be seen below.