AAT1150 查看數據表（PDF） - Advanced Analogic Technologies

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AAT1150

1MHz 1A Step-Down DC/DC Converter

Advanced Analogic Technologies 

AAT1150

1MHz 1A Step-Down DC/DC Converter

General Description

The AAT1150 SwitchReg™ is a member of

AnalogicTech's Total Power Management IC™

(TPMIC™) product family. The step-down switch-

ing converter is ideal for applications where high

efficiency, small size, and low ripple are critical.

Able to deliver 1A with internal power MOSFETs,

the current-mode controlled IC provides high effi-

ciency using synchronous rectification. Fully inter-

nally compensated, the AAT1150 simplifies system

design and lowers external parts count.

The AAT1150 is available in an MSOP-8 package

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

range.

Features

SwitchReg™

• VIN Range: 2.7V to 5.5V

• Up to 95% Efficiency

• 110mΩ RDS(ON) MOSFET Switch

• <1.0µA of Shutdown Current

• 1MHz Switching Frequency

• Fixed or Adjustable VOUT: 1.0V to 4.2V

• High Initial Accuracy: ±1%

• 1.0A Peak Current

• Integrated Power Switches

• Synchronous Rectification

• Internally Compensated Current Mode Control

• Constant PWM Mode for Low Output Ripple

• Internal Soft Start

• Current Limit Protection

• Over-Temperature Protection

• MSOP-8 package

• -40°C to +85°C Temperature Range

Typical Application

INPUT

10µF

100Ω

0.1µF

Applications

• Cable/DSL Modems

• Computer Peripherals

• High Efficiency Conversion From 5V or 3.3V

Supply

• Network Cards

• Set-Top Boxes

VP

FB

AAT1150

LX

ENABLE

VCC

SGND

PGND

4.1µH

2x 22µF

OUTPUT

1150.2005.03.1.2

1

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