Datasheet > AAT3221IJS-35-T1

AAT3221IJS-35-T1

更新时间： 2022-11-25 14:50:09

品牌	Logo	应用领域
ANALOGICTECH		稳压器
页数	文件大小	规格书
16页	392K
描述
150mA NanoPower⑩ LDO Linear Regulator

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AAT3221IJS-35-T1 数据手册

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AAT3221/2

150mA NanoPower™ LDO Linear Regulator

Functional Block Diagram

OUT

Over-Current

Protection

Over-Temp

Protection

V_REF

GND

truly high performance LDO regulator especially

well suited for circuit applications which are sensi-

tive to load circuit power consumption and extend-

Functional Description

The AAT3221 and AAT3222 are intended for LDO

regulator applications where output current load

requirements range from No Load to 150mA. The

advanced circuit design of the AAT3221/2 has been

optimized for very low quiescent or ground current

consumption making it ideal for use in power man-

agement systems for small battery operated

devices. The typical quiescent current level is just

1.1µA. The AAT3221/2 also contains an enable cir-

cuit, which has been provided to shutdown the LDO

regulator for additional power conservation in

portable products. In the shutdown state the LDO

draws less than 1µA from input supply.

ed battery life.

The LDO regulator output has been specifically

optimized to function with low cost, low ESR

ceramic capacitors. However, the design will allow

for operation with a wide range of capacitor types.

The AAT3221/2 has complete short circuit and

thermal protection. The integral combination of

these two internal protection circuits give the

AAT3221/2 a comprehensive safety system to

guard against extreme adverse operating condi-

tions. Device power dissipation is limited to the

package type and thermal dissipation properties.

Refer to the thermal considerations section for

details on device operation at maximum output

load levels.

The LDO also demonstrates excellent power sup-

ply ripple rejection (PSRR), and load and line tran-

sient response characteristics. The AAT3221/2 is a

3221.2002.03.0.94

1...5 6 789 10 11...16

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