Data Sheet

ADP150

Ultralow Noise, 150 mA, CMOS Linear Regulator

Rev. E

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FEATURES

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Ultralow noise: 9 µV rms, independent of VOUT

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No additional noise bypass capacitor required

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Stable with 1 µF ceramic input and output capacitors

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Maximum output current: 150 mA

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Input voltage range: 2.2 V to 5.5 V

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Low quiescent current

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IGND = 10 µA with zero load

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Low shutdown current: <1 µA

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Low dropout voltage: 105 mV at 150 mA load

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Initial output voltage accuracy: ±1%

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

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PSRR performance of 70 dB at 10 kHz

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Current limit and thermal overload protection

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Logic-controlled enable

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5-lead TSOT package

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

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AEC-Q100 qualified for automotive applications

APPLICATIONS

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Mobile phones

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Digital camera and audio devices

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Portable and battery-powered equipment

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Post dc-to-dc regulation

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Portable medical devices

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RF, voltage controlled oscillator (VCO), and phase locked loop

(PLL) power supplies

TYPICAL APPLICATION CIRCUITS

Figure 1. 5-Lead TSOT with Fixed Output Voltage, 1.8 V

Figure 2. 4-Ball WLCSP with Fixed Output Voltage, 1.8 V

GENERAL DESCRIPTION

The ADP150 is an ultralow noise (9 µV), low dropout, linear regula-

tor 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 per-

formance 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.

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 dam-

age 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.