Datasheet > AAT2713

AAT2713

更新时间： 2024-01-25 23:09:19

品牌	Logo	应用领域
ANALOGICTECH		转换器
页数	文件大小	规格书
23页	1440K
描述
Low Noise Dual 600mA Step-Down Converter with Synchronization

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AAT2713 数据手册

PRODUCT DATASHEET

AAT2713

SystemPower^TM

Low Noise Dual 600mA Step-Down Converter with Synchronization

General Description

Features

The AAT2713 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 bat-

teries. The AAT2713 incorporates a unique low noise

architecture which reduces ripple and spectral noise.

• V_INRange: 2.7V to 5.5V

• Low Noise Light Load Mode

• Low Ripple PWM Mode

• Output Current:

Channel 1: 600mA

Channel 2: 600mA

• 96% Efficient Step-Down Converter

• Low No Load Quiescent Current

▪

Each converter is capable of 600mA output current and

has its own enable pin. Efficiency of the converters is

optimized over full load range. Total no load quiescent

current is 70μA, allowing high efficiency even under light

load conditions.

70μA Total for Both Converters

• Integrated Power Switches

• 100% Duty Cycle

▪

• 1.7MHz Switching Frequency

• Optional Fixed Frequency or External SYNC

• Logic Selectable 180° Phase Shift Between the Two

Converters

• Current Limit Protection

• Automatic Soft-Start

• Over-Temperature Protection

• QFN33-16 Package

• -40°C to +85°C Temperature Range

The integrated power switches are controlled by pulse

width modulation (PWM) with a 1.7MHz typical switching

frequency at full load, which minimizes the size of exter-

nal 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 synchro-

nize the switching frequency of both converters.

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

• Handheld Instruments

• Micro Hard Disc Drives

The AAT2713 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.

• Microprocessor / DSP Core / IO Power

• PDAs and Handheld Computers

Typical Application

VIN1

VOUT1

Input:

VIN2

LX1

2.7V to 5.5V

2.2μH

VCC

C_IN

1μF

FB1

AAT2713

VOUT2

4.7μF

LX2

2.2μH

MODE/SYNC

4.7μF

FB2

EN1

EN2

AGND PGND1 PGND2

w w w . a n a l o g i c t e c h . c o m

2713.2008.01.1.0

12 3 4 5 6 7...23

中文翻译

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