Datasheet > 17000-00TR

17000-00TR

更新时间： 2024-11-25 21:55:31

品牌	Logo	应用领域
IXYS		转换器升压转换器
页数	文件大小	规格书
6页	251K
描述
White LED Step-Up Converter

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中文翻译

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17000-00TR 数据手册

MX841

IXYS

White LED Step-Up Converter

Features:

General Description

The MX841 is a fixed frequency, constant current

source step-up DC/DC converter. The output current

is directly regulated making the MX841 ideal for

driving series connected white light emitting diodes

(LED’s) in backlight applications. The MX841

powers up to 3 series white LED’s at 1.1V, and 20

series/parallel white LED’s at 5.0V.

• 1.1V to 5.5V Input Range

• 2 Amp Peak Switch Current

• High Efficiency > 80%

• 20V Maximum Output with Over-Voltage

Protection

• LED Intensity Control

• 1.0 MHz Fixed Frequency Switching

• 8 Lead SOIC Package

The MX841 features a 1.0MHz switching frequency

to accommodate the use of small capacitors and a

small inductor necessary in size sensitive portable

applications. Light intensity and shutdown are

conveniently controlled by a single analog voltage.

Power efficiency and battery life are extended

through the use of a high voltage, low R_DSONN-

channel MOSFET switch.

Applications:

• White LED Display Backlighting

- Low Voltage: Mobile Phones, PDA’s,

MP3 Players, Digital Cameras

- High Drive Current: Vehicle

Instrumentation Panels

The MX841 is designed to operate over

Ordering Information

temperature range of -40°C to +85°C, and is

available in an SOIC-8 Package, with or without an

Exposed Pad in Tube or on Tape and Reel.

(Alternate package types available upon request).

Qty

Part No.

Description

17000-00TU SOIC-8 Standard Tube

17000-00TR SOIC-8 Standard T&R

100

2500

17043-00TU SOIC-8 Exposed Pad Tube 100

17043-00TR SOIC-8 Exposed Pad T&R 2500

Functional Block Diagram

Typical Application

Vbattery

Vboost

VDD

osc

driver

CTL/SLEEP

OVD

err amp/

comparator

band gap

compare

Analog

Gnd

MX841

CTL/

SLEEP

CTRL

Isense

Rsense

Isense

Switch

Gnd

Analog

GND

Switch

GND

sleep det

bias gen

MX841

Drawing No. 17023

03/10/05

www.ixys.net

Preliminary

12 3 4 5 6

中文翻译

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