Datasheet > LTC3426

LTC3426

更新时间： 2024-09-23 22:55:55

品牌	Logo	应用领域
凌特 - Linear		转换器
页数	文件大小	规格书
12页	153K
描述
1.2MHz Step-Up DC/DC Converter in SOT-23

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LTC3426 数据手册

LTC3426

1.2MHz Step-Up DC/DC

Converter in SOT-23

FEATURES

DESCRIPTIO

The LTC^®3426 step-up switching regulator generates an

output voltage of up to 5.5V from an input voltage as low

as 1.6V. Ideal for applications where space is limited, it

switches at 1.2MHz, allowing the use of tiny, low cost and

low profile external components. Its internal 2A, 100mΩ

NMOS switch provides high efficiency even at heavy load,

while the constant frequency, current mode architecture

resultsinlow,predictableoutputnoisethatiseasytofilter.

■

Internal 2A MOSFET Switch

■

1.2MHz Switching Frequency

■

Integrated Soft-Start

V_INRange: 1.6V to 4.3V

■

Low R_DS(ON)Switch: 100mΩ at 5V Output

■

Delivers 5V at 800mA from a 3.3V Input

■

Delivers 3.3V at 800mA from a 2.5V Input

■

Uses Small, Low Profile External Components

Low Profile (1mm) SOT-23 (ThinSOT^TM) Package

■

Antiringing circuitry reduces EMI concerns by damping

the inductor while in discontinuous mode, and internal

soft-starteasesinrushcurrentworries. Internalfrequency

compensation is designed to accommodate ceramic out-

putcapacitors,furtherreducingnoise.Thedevicefeatures

very low shutdown current of 0.5µA.

APPLICATIO S

■

White LED Driver Supply

■

Local 3.3V or 5V Supply

■

Battery Back-Up

The LTC3426 is available in the 6-lead SOT-23 package.

, LTC and LT are registered trademarks of Linear Technology Corporation.

ThinSOT is a trademark of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

Protected by U.S. Patents, including 6498466, 6611131

TYPICAL APPLICATIO

3.3V to 5V Boost Converter

Efficiency

100

2.2µH

= 3.3V

OUT

= 5V

3.3V

OUT

800mA

10µF

LTC3426

SHDN

GND

22µF

OFF ON

3426 TA01

100

1000

LOAD CURRENT (mA)

3426 TA01b

3426f

12 3 4 5 6 7...12

中文翻译

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