NCP508 Datasheet - ON Semiconductor

NCP508 50mA Low Dropout Voltage Regulator

Pin No. Pin Name Description 1 Vin Positive power supply input voltage 2 GND Power supply ground 3 Enable This input is used to place the device into low *power stand by. When this input is pulled low, the device is disabled. If this function is not used, Enable should be connected.

NCP508 Very Low Noise, Fast Turn On, 50 mA Low Dropout Voltage Regulator The NCP508 is a 50 mA low noise voltage regulator, designed to exhibit fast turn on time and high ripple rejection. Each device contains a voltage reference unit, an error amplifier, a PMOS power transistor, resistors for setting output voltage, current limit, and temperature limit protection circuits. The NCP508 has been designed for use with ceramic capacitors. The device is housed in SC 88A and WDFN6 1.5x1.5 pac.

NCP508 Features

* Very Low Noise at 39 mVrms without a Bypass Capacitor

* High Ripple Rejection of 70 dB at 1 kHz

* Low Dropout Voltage of 140 mV (typ) at 30 mA

* Tight Load Regulation, typically 6 mV for DIout = 50 mA

* Fast Enable Turn

* On time of 20 msec

* L

NCP508_ONSemiconductor.pdf