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GENERAL DESCRIPTION

The ADP160/ADP161/ADP162/ADP163 are ultralow quiescent current, low dropout, linear regulators that operate from 2.2 V to 5.5 V and provide up to 150 mA of output current. The low

195 mV dropout vol tage at 150 mA load improves efficiency and allows operation over a wide input voltage range.

The ADP16x are specifically designed for stable operation with a tiny 1 ?F ¡À 30 ceramic input and output capacitors to meet the requirements of high performance, space-constrained

applications.

The ADP160 is available in 15 fixed output voltage options, ranging from 1.2 V to 4.2 V . The ADP160/ADP161 also include a switched resistor to discharge the output automatically when the LDO is disabled. The ADP162 is identical to the ADP160 but does not include the output discharge function.

FEATURES

Ultralow quiescent current

IQ = 560 nA with 0 ?A load

IQ = 860 nA with 1 ?A load

Stable with 1 ?F ceramic input and output capacitors

Maximum output current: 150 mA

Input voltage range: 2.2 V to 5.5 V

Low shutdown current: <50 nA typical

Low dropout voltage: 195 mV at 150 mA load

Initial accuracy: ¡À1

Accuracy over line, load, and temperature: ¡À3.5

15 fixed output voltage options: 1.2 V to 4.2 V

Adjustable output available

PSRR performance of 72 dB at 100 Hz

Current limit and thermal overload protection

Logic-control enable

Integrated output discharge resistor

5-lead TSOT package

4-ball, 0.5 mm pitch WLCSP

APPLICATIONS

Mobile phones

Digital cameras and audio devices

Portable and battery-powered equipment

Post dc-to-dc regulation

Portable medical devices