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AAT3220

150mA NanoPower™ LDO Linear Regulator

Advanced Analog Technology, Inc. 

AAT3220

150mA NanoPower™ LDO Linear Regulator

General Description

The AAT3220 PowerLinear NanoPower low

dropout (LDO) linear regulator is ideal for portable

applications where extended battery life is critical.

This device features extremely low quiescent cur-

rent, typically 1.1µA. Dropout voltage is also very

low, typically less than 225mV at the maximum out-

put current of 150mA. The AAT3220 has output

short-circuit and over-current protection. In addi-

tion, the device also has an over-temperature pro-

tection circuit which will shut down the LDO regu-

lator during extended over-current events.

The AAT3220 is available in a Pb-free, space-saving

SC59 package, or a Pb-free SOT-89 package for

applications requiring increased power dissipation.

The device is rated over the -40°C to +85°C tem-

perature range. Since only a small, 1µF ceramic

output capacitor is required, often the only space

used is that occupied by the AAT3220 itself. The

AAT3220 is truly a compact and cost-effective volt-

age conversion solution.

The AAT3221/2 is a similar product for this appli-

cation, especially when a shutdown mode is

required for further power savings.

Features

PowerLinear™

• 1.1µA Quiescent Current

• Low Dropout: 200mV (typ)

• Guaranteed 150mA Output

• High Accuracy: ±2.0%

• Current Limit and Over-Temperature

Protection

• Low Temperature Coefficient

• Factory-Programmed Output Voltages:

1.8V to 3.5V

• Stable Operation With Virtually Any Output

Capacitor Type

• 3-Pin SOT-89 or SC59 Package

• 4kV ESD Rating

Applications

• Cellular Phones

• Digital Cameras

• Handheld Electronics

• Notebook Computers

• PDAs

• Portable Communication Devices

• Remote Controls

Typical Application

INPUT

IN

OUT

AAT3220

GND

OUTPUT

GND

GND

3220.2006.01.1.4

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