MAX1698|MAX1698A - 高效率、升压型稳流器，用于LED驱动

MAX1698|MAX1698A是Maxim美信半导体公司的一款DC-DC开关调节器产品，MAX1698|MAX1698A是高效率、升压型稳流器，用于LED驱动，本站介绍了MAX1698|MAX1698A的封装应用图解、特点和优点、功能等，并给出了与MAX1698|MAX1698A相关的Maxim元器件型号供参考。

MAX1698|MAX1698A - 高效率、升压型稳流器，用于LED驱动 - DC-DC开关调节器 - Maxim美信半导体高性能芯片品质 - 美信半导体

产品概述

The MAX1698 and MAX1698A are efficient drivers forwhite or color LEDs. They are ideal for large LED backlitdisplays in PDAs and laptop computers. Numerousbenefits include greater simplicity, lower cost, higherefficiency, longer bulb life, and greater reliability whencompared to fluorescent (CCFL) and electroluminescent(EL) lamps.

The MAX1698/MAX1698A are switch-mode boost controllersin which LED current, rather than output voltage,is regulated The devices drive series-connected LEDswith a controlled current that is measured with a typically15Ω sense resistor, not an expensive fractional-ohm value. LED current control and dimming are accomplishedwith an adjust input (ADJ). For larger light output,multiple LED banks can be connected in parallelwith up to 5W total output power.

The MAX1698A has a higher, and more accuratelyspecified, CS current limit than the MAX1698 for higherpowerapplications of 5W or more. Both devices aresupplied in a space-saving 10-pin µMAX package thatoccupies half the space of an 8-pin SO. An evaluationkit (MAX1698EVKIT) is available to speed designs.

关键特性

以下关键特性由Maxim美信半导体提供：

Over 90% Efficiency

Lossless, Adjustable LED Brightness

Space-Saving 10-Pin µMAX Package

Simpler, Lower Cost, More Reliable Compared to CCFL or EL Backlights

Up to 5W Output Power

热门应用

LCD板背光

电池供电背光应用

蜂窝电话

手持终端

PDA

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