ADP120

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100 mA, Low Quiescent Current, CMOS Linear Regulator

Data Sheet (Rev. B) Product Selection Table

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Overview

Input voltage range: 2.3 V to 5.5 V
Output voltage range: 1.2 V to 3.3 V
Low quiescent current:
I_GND = 11 μA with zero load
I_GND = 22 μA with 100 mA load
Low shutdown current: <1 μA
Low dropout voltage
60 mV @ 100 mA load

Output current: 100 mA
High PSRR:
73 dB @ 1 kHz at V_OUT= 1.2 V
70 dB @ 10 kHz at V_OUT= 1.2 V
Low noise: 40 μV rms at V_OUT = 1.2 V
No noise bypass capacitor required
Initial accuracy: ±1%
Stable with small 1 μF ceramic output capacitor

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 22 μA of quiescent current at full load makes the ADP120 ideal for battery-operated portable equipment.

The ADP120 is available in output voltages ranging from 1.2 V to 3.3 V. The part is optimized for stable operation with small 1 μF ceramic output capacitors. The ADP120 delivers good transient performance with minimal board area. Short-circuit protection and thermal overload protection circuits prevent damage in adverse conditions. The ADP120 is available in a tiny 5-lead TSOT and a 4-ball 0.4 mm pitch WLCSP and utilizes the smallest footprint solution for use in a variety of portable applications.

Documentation

Frequently Asked Question 1

FAQ 09/05/2025

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
ADP121	PRODUCTION	150 mA, Low Quiescent Current, CMOS Linear Regulator in 5-Lead TSOT or 4-Ball WLCSP
ADP150	PRODUCTION	Ultralow Noise, 150 mA CMOS Linear Regulator

Tools & Simulations

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