Datasheet > AAT3183IJS-1.34-T1

AAT3183IJS-1.34-T1

更新时间： 2024-09-17 02:59:31

品牌	Logo	应用领域
ANALOGICTECH		转换器
页数	文件大小	规格书
15页	348K
描述
300mA Inductorless Step-Down Converter

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PRODUCT DATASHEET

AAT3183

ChargePump

300mA Inductorless Step-Down Converter

General Description

Features

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.

• V_INRange: 2.7V to 5.5V

• V_OUT: 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

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.

• 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

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.

Applications

• Camcorders

• Digital Still Cameras

• DSP Core Supplies

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

SC70JW-8 package. Operating temperature range is

-40°C to +85°C.

• PDAs, Handheld Devices, Notebook PCs

• Smart Phones

Typical Application

C_FLY

1µF

C1- C1+

OUT

V_IN

V_OUT

C_IN

1µF

AAT3183

C_OUT

4.7µF

V_ENABLE

GND

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

3183.2008.02.1.3

12 3 4 5 6 7...15

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