GENERAL DESCRIPTION

The ADP120 is a low quiescent current, low dropout, linear regulator that operates from 2.3 V to 5.5 V and provides up to 100 mA of output current. The low 60 mV dropout voltage at 100 mA load improves efficiency and allows operation over a wide input voltage range. The low 25 μA of quiescent current at full load makes the ADP120 ideal for battery-operated portable equipment.

FEATURES

Input voltage range: 2.3 V to 5.5 V

Output voltage range: 1.2 V to 3.3 V

Output current: 100 mA

Low quiescent current IGND = 11 μA with zero load IGND = 22 μA with 100 mA load

Low shutdown current: <1 μA

Low dropout voltage 60 mV @ 100 mA load

High PSRR 73 dB @ 1 kHz at VOUT = 1.2 V 70 dB @ 10 kHz at VOUT = 1.2 V

Low noise: 40 μV rms at VOUT = 1.2 V

No noise bypass capacitor required

Initial accuracy: ±1

Stable with small 1 μF ceramic output capacitor

16 fixed output voltage options

Current-limit and thermal overload protection

Logic controlled enable

5-lead TSOT package

4-ball 0.4 mm pitch WLCSP

APPLICATIONS

Mobile phones

Digital camera and audio devices

Portable and battery-powered equipment

Post regulation