AAT3220IGY-3.3-T1 查看數據表（PDF） - Skyworks Solutions

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AAT3220IGY-3.3-T1

150mA NanoPower LDO Linear Regulator

Skyworks Solutions 

Functional Block Diagram

IN

DATA SHEET

AAT3220

150mA NanoPowerTM LDO Linear Regulator

Over-Current

Protection

Over-Temp

Protection

OUT

VREF

GND

Functional Description

The AAT3220 is intended for LDO regulator applications

where output current load requirements range from no

load to 150mA.

The advanced circuit design of the AAT3220 has been

optimized for minimum quiescent or ground current con-

sumption, making it ideal for use in power management

systems for small battery-operated devices. The typical

quiescent current level is just 1.1µA. The LDO also dem-

onstrates excellent power supply ripple rejection (PSRR)

and load and line transient response characteristics. The

AAT3220 is a truly high performance LDO regulator

especially well suited for circuit applications which are

sensitive to load circuit power consumption and extend-

ed battery life.

The LDO regulator output has been specifically optimized

to function with low cost, low equivalent series resistance

(ESR) ceramic capacitors. However, the design will allow

for operation with a wide range of capacitor types.

The AAT3220 has complete short-circuit and thermal

protection. The integral combination of these two inter-

nal protection circuits give the AAT3220 a comprehen-

sive safety system to guard against extreme adverse

operating conditions. Device power dissipation is limited

to the package type and thermal dissipation properties.

Refer to the Thermal Considerations section of this

datasheet for details on device operation at maximum

output load levels.

8

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

202250A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 7, 2012

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