Datasheet > AAT1146IJS-1.0-T1

AAT1146IJS-1.0-T1

更新时间： 2024-02-21 19:09:14

品牌	Logo	应用领域
ANALOGICTECH		转换器
页数	文件大小	规格书
20页	663K
描述
Fast Transient 400mA Step-Down Converter

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技术参数
数据手册

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AAT1146IJS-1.0-T1 技术参数

生命周期：	Transferred	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.84

AAT1146IJS-1.0-T1 数据手册

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PRODUCT DATASHEET

AAT1146

SwitchReg^TM

FastTransient 400mA Step-Down Converter

General Description

Features

The AAT1146 SwitchReg is a 1.4MHz step-down con-

verter with an input voltage range of 2.7V to 5.5V and

output voltage as low as 0.6V. It is optimized to react

quickly to a load variation.

• V_INRange: 2.7V to 5.5V

• V_OUTFixed or Adjustable from 0.6V to V_IN

• 27μA No Load Quiescent Current

• Up to 98% Efficiency

• 400mA Max Output Current

• 1.4MHz Switching Frequency

• 120μs Soft Start

• Fast Load Transient

• Over-Temperature Protection

• Current Limit Protection

The AAT1146 is available in fixed voltage versions with

internal feedback and a programmable version with

external feedback resistors. It can deliver 400mA of load

current while maintaining a low 27μA no load quiescent

current. The 1.4MHz switching frequency minimizes the

size of external components while keeping switching

losses low.

• 100% Duty Cycle Low-Dropout Operation

• <1μA Shutdown Current

The AAT1146 is designed to maintain high efficiency

throughout the operating range, which is critical for por-

table applications.

• SC70JW-8 and SOT23-5 Packages

• Temperature Range: -40°C to +85°C

The AAT1146 is available in the Pb-free, space-saving

2.0x2.1mm SC70JW-8 and SOT23-5 packages and is

rated over the -40°C to +85°C temperature range.

Applications

• Cellular Phones

• Digital Cameras

• Handheld Instruments

• Microprocessor / DSP Core / IO Power

• PDAs and Handheld Computers

• USB Devices

Typical Application (Fixed Output Voltage)

AAT1146

V_O

V_IN

OUT

VIN

4.7µH

4.7µF

PGND

AGND

PGND

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1146.2008.06.1.6

12 3 4 5 6 7...20

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