GENERAL DESCRIPTION：

The ADP150 is an ultralow noise (9 μV), low dropout, linearregulator that operates from 2.2 V to 5.5 V and provides up to150 mA of output current. The low 105 mV dropout voltage at150 mA load improves efficiency and allows operation over awide input voltage range.Using an innovative circuit topology, the ADP150 achieves ultralownoise performance without the necessity of an additional noisebypass capacitor, making it ideal for noise sensitive analog andRF applications. The ADP150 also achieves ultralow noiseperformance without compromising PSRR or line and loadtransient performance. The ADP150 offers the best combinationof ultralow noise and quiescent current consumption to maximizebattery life in portable applications. The ADP150 is specifically designed for stable operation with tiny 1 μF ± 30% ceramic input and output capacitors to meet the requirements of high performance, space-constrained applications. The ADP150 is available in 14 fixed output voltage options, ranging from 1.8 V to 3.3 V. Short-circuit and thermal overload protection circuits prevent damage in adverse conditions. The ADP150 is available in tiny 5-lead TSOT and 4-ball, 0.4 mm pitch WLCSP packages for the smallest footprint solution to meet a variety of portable power applications. 

FEATURES：

Ultra low noise: 9 μV rms, independent of VOUTNo additional noise bypass capacitor requiredStable with 1 μF ceramic input and output capacitorsMaximum output current: 150 mAInput voltage range: 2.2 V to 5.5 VLow quiescent currentIGND = 10 μA with zero loadLow shutdown current: <1 μALow dropout voltage: 105 mV @ 150 mA loadInitial output voltage accuracy: ±1%Up to 14 fixed output voltage options: 1.8 V to 3.3 VPSRR performance of 70 dB at 10 kHzCurrent limit and thermal overload protectionLogic-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