View r1118x-series datasheet:

＊R1118N (SOT-23-5) is the discontinued product and the R1118K (DFN(PLP)1612-4B) is the non-promotion product. As of March in 2015. R1118x SERIES AUTOMATIC MODE SHIFT / 150mA LOW VOLTAGE REGULATOR NO.EA-175-140530 OUTLINE R1118x Series are CMOS-based voltage regulator ICs with ultra low supply current (Typ.5.5μA), and remarkable improved transient response compared with the conventional low supply current voltage regulator. The supply current of these ICs is automatically shifts between fast mode and low power mode, it depending on the load current. The current threshould is fixed internally. R1118x shifts from low power mode to fast response mode at IOUT=7mA (Typ.) and shifts fast response mode to low power mode at IOUT=2mA (Typ.). These ICs are capable of the lo