NCP508

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 packages. Standard voltage versions are 1.5, 1.8, 2.5, 2.8, 3.0, and 3.3. Other voltages are available in 100 mV steps. 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 Logic Level Enable ESR can vary from a few mW to 3 W These are Pb−Free Devices Typical Applications RF Subsystems in Handsets Noise Sensitive Circuits; VCOs, PLL Battery or Unregulated Voltage C1 1m 1 2 5 ON OFF 34 Figure 1. Typical Application Diagram Vout C2 1m http://onsemi.com 4 5 123 SC70−5/SC−88A/SOT−353 SQ SUFFIX CASE 419A M MARKING DIAGRAM 5 xxx MG G 1 XXX = Specific Device Code M = Date Code* G = Pb−Free Package (Note: Microdot may be in either location) *Date Code orientation and/or position may vary depending upon manufacturing location. WDFN6 MN SUFFIX CASE 511BJ 1 X MG G X = Specific Device Code...