AAT3183 查看數據表（PDF） - Advanced Analogic Technologies

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AAT3183

300mA Inductorless Step-Down Converter

Advanced Analogic Technologies 

ChargePumpTM

General Description

The AAT3183 is a high efficiency step-down charge pump

converter providing up to 300mA of output current. The

1/2x (gain) charge pump converter topology provides

enhanced efficiency over conventional LDO regulators

and requires only three low cost ceramic capacitors. No

inductor is required; saving space and cost when com-

pared to inductive switching regulators.

The AAT3183 typically consumes 35µA of no load (zero

output current) quiescent current, making it ideal for

portable battery powered systems. Shutdown current is

less than 1µA.

The AAT3183 soft-start prevents excessive inrush cur-

rent while providing monotonic turn-on characteristics.

The device includes integrated short-circuit and over-

temperature (thermal) protection to safeguard system

components.

The AAT3183 is available in a Pb-free 2.0x2.1mm

SC70JW-8 package. Operating temperature range is

-40°C to +85°C.

PRODUCT DATASHEET

AAT3183

300mA Inductorless Step-Down Converter

Features

• VIN Range: 2.7V to 5.5V

• VOUT: 1.5V and 1.34V

• 300mA Maximum Output Current

• Ultra-Small Solution for Portable Applications

▪ Small Footprint

▪ Only Three External Ceramic Capacitors Required

▪ No Inductor

• High Efficiency over the Output Current Range

• Excellent Transient Performance

• 35µA Typical Quiescent Current

• <1.0µA Shutdown Current

• Up to 2MHz Switching Frequency

• Integrated Soft-Start

• Short-Circuit and Thermal Protection

• 2.0x2.1mm SC70JW-8 Package

• -40°C to 85°C Temperature Range

Applications

• Camcorders

• Digital Still Cameras

• DSP Core Supplies

• PDAs, Handheld Devices, Notebook PCs

• Smart Phones

Typical Application

VIN

VENABLE

CFLY

1µF

C1- C1+

IN

OUT

CIN

1µF

AAT3183

EN

GND

VOUT

COUT

4.7µF

3183.2008.02.1.3

www.analogictech.com

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