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AAT2120

500mA Low Noise Step-Down Converter

General Description

The AAT2120 SwitchReg is a 1.8MHz step-down

converter with an input voltage range of 2.7V to

5.5V and output as low as 0.6V. Its low supply

current, small size, and high switching frequency

make the AAT2120 the ideal choice for portable

applications.

The AAT2120 delivers up to 500mA of load current,

while maintaining a low 45碌A no load quiescent cur-

rent. The 1.8MHz switching frequency minimizes

the size of external components, while keeping

switching losses low. The AAT2120 feedback and

control delivers excellent load regulation and tran-

sient response with a small output inductor and

capacitor.

The AAT2120 maintains high efficiency throughout

the load range. The AAT2120鈥檚 unique architecture

produces reduced ripple and spectral noise. Over-

temperature and short-circuit protection safeguard

the AAT2120 and system components from damage.

The AAT2120 is available in a Pb-free, 8-pin,

2x2mm STDFN package and is rated over the -40擄C

to +85擄C temperature range.

Features

鈥?/div>

SwitchReg

鈩?/div>

V

IN

Range: 2.7V to 5.5V

V

OUT

Range: 0.6V to V

IN

Up to 500mA Output Current

Up to 96% Efficiency

Low Noise Light Load Mode

45碌A Typical Quiescent Current

1.8MHz Switching Frequency

Soft-Start Control

Over-Temperature and Current Limit

Protection

100% Duty Cycle Low-Dropout Operation

<1碌A Shutdown Current

Small External Components

Ultra-Small STDFN22-8 Package

Temperature Range: -40擄C to +85擄C

Applications

鈥?/div>

Bluetooth

廬

Headsets

Cellular Phones

Digital Cameras

Handheld Instruments

Micro Hard Disk Drive

Portable Music Players

USB Devices

Typical Application

V

IN

AAT2120

VP

VIN

C

1

4.7碌F

EN

FB

LX

L1

3.0渭H

R

1

118k惟

R

2

59k惟

C

2

4.7碌F

V

O

= 1.8V

500mA

GND

PGND

2120.2007.10.1.1

1

現有數量
61現貨
價格
1 : ￥4.05000剪切帶（CT）
系列
-
包裝
卷帶（TR）剪切帶（CT）Digi-Reel? 得捷定制卷帶
產品狀態(tài)
停產
功能
降壓
輸出配置
正
拓撲
降壓
輸出類型
可調式
輸出數
1
電壓 - 輸入（最小值）
2.7V
電壓 - 輸入（最大值）
5.5V
電壓 - 輸出（最小值/固定）
0.6V
電壓 - 輸出（最大值）
5.5V
電流 - 輸出
500mA
頻率 - 開關
1.8MHz
同步整流器
是
工作溫度
-40°C ~ 150°C（TJ）
安裝類型
表面貼裝型
封裝/外殼
8-UFDFN 裸露焊盤
供應商器件封裝
8-STDFN（2x2）

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AAT2120IES-0.6-T1 Datasheet

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