Datasheet > AAT2749IUR-IE-T1

AAT2749IUR-IE-T1

更新时间： 2024-01-11 23:32:49

品牌	Logo	应用领域
思佳讯 - SKYWORKS		开关
页数	文件大小	规格书
18页	393K
描述
Switching Regulator,

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中文翻译

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技术参数
数据手册

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AAT2749IUR-IE-T1 技术参数

生命周期：	Transferred	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.77
Base Number Matches：	1

AAT2749IUR-IE-T1 数据手册

PRODUCT DATASHEET

AAT2749

SystemPower

3.0MHz Step-Down Converter and Low V_INLDO

General Description

Features

•

The AAT2749 is a two channel power regulator that oper-

ates from 2.3V to 5.5V. The AAT2749 contains a 3.0MHz,

600mA step-down converter and a low input voltage

300mA LDO regulator.

V_INRange: 2.3V to 5.5V

Two Outputs

V_{OUT_BUCK}= 1.8V

V_{OUT_LDO}= 1.0V, 1.2V

Step-Down Converter

▪

•

The step-down converter can deliver 600mA of load cur-

rent. The 3.0MHz switching frequency minimizes the size

of external components while keeping switching losses

low. The AAT2749 step-down converter maintains high

efficiency throughout the operating range, which is criti-

cal for portable applications. Fixed frequency, low noise

operation can be forced by a logic signal on the MODE

pin.

Ultra-Small 0603 Inductor (Height 1mm)

Up to 92% Efficiency

3.0MHz Switching Frequency

MODE Selection Pin to Select Forced PWM or PWM/

▪

LL Operation Mode

Current Limit Protection

Automatic Soft Start

LDO Regulator

▪

•

The AAT2749 also contains a 300mA LDO regulator with

input voltage capability as low as 1.62V. The LDO regula-

tor power input can be tied directly to the output of the

step-down regulator to increase efficiency.

V_INLRange: 1.62V to V_IN

300mA Output Current

Current Limit Protection

▪

•

100μA No Load Quiescent Current

Over-Temperature Protection

-40°C to +85°C Temperature Range

Total quiescent current for the step-down converter and

LDO is a low 100μA under no load condition.

The AAT2749 is available in a Pb-free, space-saving

9-pin chip scale package (CSP) (200ꢀm bump in 400ꢀm

pitch) and is rated over the -40°C to +85°C temperature

range.

Applications

•

Battery-Powered Applications

Cellular and Smart Phones

Digital Still and Video Cameras

PDAs, Palmtops

Portable Instruments

Typical Application

2.2μH

OUT_BUCK

1.8V: 600mA

(2.3V - 5.5V)

(1.62V - 5.5V)

IN_BUCK

IN_LDO

C_{IN_BUCK}

4.7μF

C_BUCK

4.7μF

1.2V: 300mA

OUT_LDO

C_LDO

2.2μF

C_{IN_LDO}

1.0μF

AAT2749

CHIP_ENABLE

MODE

GND

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

2749.2009.07.1.1

12 3 4 5 6 7...18

中文翻译

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与AAT2749IUR-IE-T1相关器件

型号	品牌	获取价格	描述	数据表
AAT2782	ANALOGICTECH	获取价格	Triple Output PMIC: Dual Buck with Low-VIN LDO
AAT2782IRN-AAE-T1	ANALOGICTECH	获取价格	Switching Regulator/Controller,
AAT2783	ANALOGICTECH	获取价格	Triple Output PMIC: Dual Buck with Low-VIN LDO
AAT2784	ANALOGICTECH	获取价格	3-Channel Step-Down DC/DC Converter
AAT2784IRN-AAA-T1	ANALOGICTECH	获取价格	3-Channel Step-Down DC/DC Converter
AAT2785	ANALOGICTECH	获取价格	3-Channel Step-Down DC/DC Converter
AAT2785IRN-AAA-T1	SKYWORKS	获取价格	Switching Regulator,
AAT2786	ANALOGICTECH	获取价格	1.5A Step-Down Converter and 150mA LDO
AAT2786IRN-AE-T1	ANALOGICTECH	获取价格	1.5A Step-Down Converter and 150mA LDO
AAT2789	ANALOGICTECH	获取价格	Low Noise, High Frequency Dual Step-Down Converter

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