The NCP4687DH33T1G is a 3.3V fixed output CMOS low-dropout (LDO) Linear Regulator with high output voltage accuracy which features a high ripple rejection, low supply current with low-dropout (LDO) and chip enable with built-in low RDS(ON) NMOS transistor for fast output capacitor discharging as option. The device is composed of the voltage reference unit, error amplifier, resistor divider for output voltage sensing or precise output voltage setting.