Datasheet > LT3471

LT3471

更新时间： 2024-11-29 22:46:55

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
16页	266K
描述
Dual 1.3A, 1.2MHz Boost/Inverter in 3mm ???? 3mm DFN

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中文翻译

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LT3471 数据手册

LT3471

Dual 1.3A, 1.2MHz

Boost/Inverter in

3mm × 3mm DFN

FEATURES

DESCRIPTIO

■

1.2MHz Switching Frequency

The LT^®3471 dual switching regulator combines two 42V,

1.3A switches with error amplifiers that can sense to

ground providing boost and inverting capability. The low

■

Low V_CESATSwitches: 330mV at 1.3A

■

High Output Voltage: Up to 40V

■

Wide Input Range: 2.4V to 16V

V_CESATbipolar switches enable the device to deliver high

■

Inverting Capability

current outputs in a small footprint. The LT3471 switches

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

profile inductors and capacitors. High inrush current at

start-up is eliminated using the programmable soft-start

function, where an external RC sets the current ramp rate.

A constant frequency current mode PWM architecture

resultsinlow,predictableoutputnoisethatiseasytofilter.

■

5V at 630mA from 3.3V Input

■

12V at 320mA from 5V Input

■

–12V at 200mA from 5V Input

■

Uses Tiny Surface Mount Components

■

Low Shutdown Current: <1µA

■

Low Profile (0.75mm) 10-Lead 3mm × 3mm

DFN Package

The LT3471 switches are rated at 42V, making the device

idealforboostconvertersupto±40VaswellasSEPICand

flyback designs. Each channel can generate 5V at up to

630mA from a 3.3V supply, or 5V at 510mA from four

alkaline cells in a SEPIC design. The device can be config-

ured as two boosts, a boost and inverter or two inverters.

APPLICATIO S

■

Organic LED Power Supply

■

Digital Cameras

■

White LED Power Supply

Cellular Phones

Medical Diagnostic Equipment

Local ±5V or ±12V Supply

TFT-LCD Bias Supply

xDSL Power Supply

■

The LT3471 is available in a low profile (0.75mm) 10-lead

3mm × 3mm DFN package.

■

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

■

TYPICAL APPLICATIO

OLED Driver

2.2µH

OLED Driver Efficiency

OUT1

3.3V

350mA

90.9k

15k

4.7µF

CONTROL 1

SW1

4.7k

= 7V

OUT1

SHDN/SS1

FB1N

FB1P

0.33µF

= –7V

REF

OUT1

0.1µF

LT3471

10µF

4.7k

15k

FB2N

FB2P

CONTROL 2

SHDN/SS2

GND

SW2

0.33µF

75pF

105k

1µF

10µH

15µH

–7V

250mA

OUT2

200

100

300

400

10µF

(mA)

OUT

3471 TA01b

3471 TA01

3471f

12 3 4 5 6 7...16

中文翻译

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与LT3471相关器件

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LT3471EDD	Linear	获取价格	Dual 1.3A, 1.2MHz Boost/Inverter in 3mm ???? 3mm DFN
LT3471EDD#TRPBF	Linear	获取价格	LT3471 - Dual 1.3A, 1.2MHz Boost/Inverter in 3mm x 3mm DFN; Package: DFN; Pins: 10; Temper
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LT3472EDD	Linear	获取价格	Boost and Inverting DC/DC Converter for CCD Bias
LT3472EDD#PBF	Linear	获取价格	LT3472 - Boost and Inverting DC/DC Converter for CCD Bias; Package: DFN; Pins: 10; Tempera
LT3472EDD#TRPBF	Linear	获取价格	LT3472 - Boost and Inverting DC/DC Converter for CCD Bias; Package: DFN; Pins: 10; Tempera
LT3473	Linear	获取价格	20mA LED Driver and OLED Driver with Integrated Schottky in 3mm x 2mm DFN
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LT3473_15	Linear	获取价格	Micropower 1A Boost Converter with Schottky and Output Disconnect

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