GENERAL DESCRIPTION

The ADP150 is an ultralow noise (9 µV), low dropout, linear regulator that operates from 2.2 V to 5.5 V and provides up to 150 mA of output current. The low 105 mV dropout voltage at 150 mA load improves efficiency and allows operation over a wide input voltage range.

Using an innovative circuit topology, the ADP150 achieves ultralow noise performance without the necessity of an additional noise bypass capacitor, making it ideal for noise sensitive analog and RF applications. The ADP150 also achieves ultralow noise performance without compromising PSRR or line and load transient performance. The ADP150 offers the best combination of ultralow noise and quiescent current consumption to maximize battery life in portable applications.

FEATURES

  Ultra low noise: 9 µV rms, independent of VOUT

  No additional noise bypass capacitor required

  Stable with 1 µF ceramic input and output capacitors

  Maximum output current: 150 mA

  Input voltage range: 2.2 V to 5.5 V

  Low quiescent current

     IGND = 10 µA with zero load

  Low shutdown current: <1 µA

  Low dropout voltage: 105 mV @ 150 mA load

  Initial output voltage accuracy: ±1%

  Up to 14 fixed output voltage options: 1.8 V to 3.3 V

  PSRR performance of 70 dB at 10 kHz

  Current limit and thermal overload protection

  Logic-controlled enable

  5-lead TSOT package

  4-ball, 0.8 mm × 0.8 mm, 0.4 mm pitch WLCSP

APPLICATIONS

  Mobile phones

  Digital camera and audio devices

  Portable and battery-powered equipment

  Post dc-to-dc regulation

  Portable medical devices

  RF, PLL, VCO, and clock power supplies