View xc6421-series datasheet:

XC6421 Series ETR03053-006 300mA Small High Speed Dual LDO Regulator, Built-in Inrush Current Protection ■GENERAL DESCRIPTION The XC6421 series is an ultra small CMOS dual LDO regulator, mounting 300mA 2-channel small high speed LDO. The series features high accuracy, high ripple rejection and low dropout voltage. The series is capable of high density board installation by the ultra small package of two low on-resistance regulators. Both output accuracies are ±1% by laser trimming. Each regulator can be turned off independently to be in stand-by mode by controlling EN pin. In this state, the electric charge at the output capacitor (C ) is discharged via the internal auto-discharge switch, and as a result L the V voltage quickly returns to the V level. OUT SS