AAT1154 Ver la hoja de datos (PDF) - Analog Technology Inc

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AAT1154

1MHz 3A Step-Down DC/DC Converter

Analog Technology Inc 

SwitchRegTM

General Description

The AAT1154 SwitchReg is a step-down switching con-

verter ideal for applications where high efficiency, small

size, and low ripple are critical. Able to deliver 3A with

an internal power MOSFET, the current-mode controlled

IC provides high efficiency. Fully internally compensated,

the AAT1154 simplifies system design and lowers exter-

nal parts count.

The AAT1154 is available in a Pb-free SOP-8 package and

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

PRODUCT DATASHEET

AAT1154

1MHz 3A Step-Down DC/DC Converter

Features

• VIN Range: 2.7V to 5.5V

• Fixed or Adjustable VOUT: 1.0V to 4.2V

• 3A Output Current

• Up to 95% Efficiency

• Integrated Low On Resistance Power Switch

• Internally Compensated Current Mode Control

• 1MHz Switching Frequency

• Constant Pulse Width Modulation (PWM) Mode

• Low Output Ripple With Light Load

• Internal Soft Start

• Current Limit Protection

• Over-Temperature Protection

• SOP-8 Package

• -40°C to +85°C Temperature Range

Applications

• Cable/DSL Modems

• Computer Peripherals

• High Efficiency Conversion from 5V or 3.3V Supply

• Network Cards

• Set-Top Boxes

Typical Application

INPUT

100Ω

10μF

0.1μF

VP

FB

AAT1154

VCC

LX

EN

GND

1.5μH

120μF

OUTPUT

1154.2007.11.1.7

www.analogictech.com

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