Datasheet > AAT2315_07

AAT2315_07

更新时间： 2024-02-25 10:10:56

品牌	Logo	应用领域
ANALOGICTECH		转换器
页数	文件大小	规格书
22页	696K
描述
Dual 600mA Step-Down Converter with Synchronization

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中文翻译

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数据手册

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AAT2315_07 数据手册

AAT2513

Dual 600mA Step-Down

Converter with Synchronization

™

SystemPower

General Description

Features

The AAT2513 is a high efficiency dual synchronous

step-down converter for applications where power

efficiency, thermal performance and solution size

are critical. Input voltage ranges from 2.7V to 5.5V,

making it ideal for systems powered by single-cell

lithium-ion/polymer batteries.

•

V_INRange: 2.7V to 5.5V

Output Current:

— Channel 1: 600mA

— Channel 2: 600mA

96% Efficient Step-Down Converter

Low No Load Quiescent Current

— 60µA Total for Both Converters

Integrated Power Switches

100% Duty Cycle

•

Each converter is capable of 600mA output current

and has its own enable pin. Efficiency of the con-

verters is optimized over full load range. Total no

load quiescent current is 60µA, allowing high effi-

ciency even under light load conditions.

•

1.7MHz Switching Frequency

Optional Fixed Frequency or External SYNC

Logic Selectable 180° Phase Shift Between

the Two Converters

The integrated power switches are controlled by

pulse width modulation (PWM) with a 1.7MHz typi-

cal switching frequency at full load, which minimizes

the size of external components. Fixed frequency,

low noise operation can be forced by a logic signal

on the MODE pin. Furthermore, an external clock

can be used to synchronize the switching frequency

of both converters.

•

Current Limit Protection

Automatic Soft-Start

Over-Temperature Protection

QFN33-16 Package

-40°C to +85°C Temperature Range

A phase shift pin (PS) is available to operate the

two converters 180° out of phase at heavy load to

achieve low input ripple.

Applications

•

Cellular Phones / Smart Phones

Digital Cameras

The AAT2513 is available in a Pb-free, thermally

enhanced 16-pin QFN33 package and is specified

for operation over the -40°C to +85°C temperature

range.

Handheld Instruments

Micro Hard Disc Drives

Microprocessor / DSP Core / IO Power

PDAs and Handheld Computers

Typical Application

VIN1

VOUT1

Input:

VIN2

LX1

FB1

LX2

2.7V to 5.5V

2μH

VCC

C_IN

1μF

AAT2513

VOUT2

4.7μF

2μH

MODE/SYNC

4.7μF

FB2

EN1

EN2

AGND PGND1 PGND2

2513.2007.04.1.1

12 3 4 5 6 7...22

中文翻译

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