《国际电子商情》数字版2010年9月刊 - (Page 42)

封面故事 LED驱动IC需求持续上涨，2012是关键需要较高的电压，对于取自驱动IC质量攸关LED照明亮度的恒定电流技术，可产品使用的LED等的数量较 48V汽车蓄电池的电源来说效能整合亮度调整功能的脉冲多，大多是串、并联驱动，是十分方便的。整体而言，可达成一致性宽度调制(PWM)整合技术为各类LED驱动IC一致追求的技术发展。而对于照明应用而言，相较于一般的白炽灯泡可以直接连接220V的交流电，LED是2~3伏的低电压驱动，必须设计复杂的变换电路，且 LED 是否能长时间以高效能运作，驱动电源的质量可说是关键之一，LED驱动IC的重要性由此可见。现有的LED路灯和家庭普通LED照明解决方案基本上都分为两个部份，一部分是将220V市电转换到24V 或48V的AC-DC电源适配器，另一部分则是对 LED 提供驱动电流的 LED 升降压控制器。照明LED驱动IC 业者的产品亦在此两方面求取发展。整体而言，在各类LED 应用中，照明领域至今仍属于各家混战局面，因此也成为LED驱动IC布局的重点。立科技副总经理张国城表示，该公司先前筹备多时的 LED一般照明应用产品，在产品线及相关解决方案备齐后，目前已开始为公司带来实质的业绩贡献。 » 上接41页 Junior ad 157mm x 220mm 降低驱动IC用量及成本立今年在LED照明方面的布局便包括甫于日前推出的下接44页 » 42 国际电子商情 | 2010年9月 | www.esmchina.com http://www.burnon.com http://www.esmchina.com

Table of Contents for the Digital Edition of 《国际电子商情》数字版2010年9月刊

STC MCU Co Ltd
Digi-Key Corporation
STC MCU Co Ltd
STC MCU Co Ltd
STC MCU Co Ltd
Texas Instruments HK Ltd
Shenzhen Junyao Electronic Co Ltd
Hong Kong Baite (Group) Electronic Co Ltd
SG Microelectronics (HongKong) Co Limited
Mitsumi Electric Co Ltd
Mitsumi Electric Co Ltd
Wuhan P&S Information Technology Co Ltd
U.S.A.Hittite Microwave Co Ltd Shanghai Rep Office
Zhejiang Jiakang Electronic Co Ltd
International Rectifier
Exar Corporation Shenzhen Representative Office
Excel Cell Electronic Co Ltd
Shenzhen Mornsun Electronics Co Ltd
Fuzetec Technology Co Ltd
Renesas Electronics
BYD Company Limited
BYD Company Limited
DongGuan ShiLong HuaTong Electronic Co Ltd
Shanghai Yachuang Electronics Co Ltd
SinoHub Inc
China Electronics Appliance Shenzhen Co Ltd
Burnon International Limited
U.S.A.Hittite Microwave Co Ltd Shanghai Rep Office
Honestar Technologies Co Ltd
Micrel Semiconductor
Shanghai Keter Polymer Material Co Ltd
SyncMOS Technologies Inc
BCD Semiconductor Manufacturing Limited
Interine Electronics Pan-asia Co Ltd
Interine Electronics Pan-asia Co Ltd
A-Bright Industrial Co Ltd
Powertek Group Co Limited
ROHM Co Ltd
Micon Design Technology Co Ltd
Beijing Yisheng Leju Service Company
Keystone Electronics Corp
National Semiconductor Hong Kong Ltd
Shenzhen Hi-Hone Electronics Co Ltd
Lampek Enterprise Development (HK) Limited
Shenzhen Oriental Jiaying Industrial Co Ltd
Walter Electronic Co Ltd
Shenzhen Secom Telecom Co Ltd
National Semiconductor Hong Kong Ltd
Axelite Technology (Shenzhen) Co Ltd
Cognex Asia Inc Shanghai Rep Office
Asiacom Technology (HK) Ltd
Conquer Electronics Co Ltd
Mueller Electric (Shanghai) Ltd
Hong Kong Trade Development Council
Cytech Technology Ltd/Linear Technology
Qualtek Electronics Ltd
Richardson Electronics
ZLG-MCU Development Co Ltd
Protronic Asia Limited
Mouser Electronics
CviLux Corporation
OTAX
Nanjing Shiheng Electronics Co Ltd
Tenx Technology Inc
Samtec Inc
Xiamen Letdo Electron Co Ltd
Eyang Technology Development Co Ltd
Xiamen Ningly Electronics Co Ltd
LPKF (Tianjin) Co Ltd
Nanjing AH Electronic Science & Technology Co Ltd
Up Teks Co Ltd
Beijing Yuzhongda Electronic Technology Co Ltd
Future Technology Electronics Co Ltd
Beijing Rowa Beite Electronic Co Ltd
EnEcomponents.com
Honghu City Languang Electronics Co Ltd
Weltronics Imaging Technology Ltd
Beijing Times Creation Electronic Co Ltd
Chyao Shiunn Electronic Industrial Ltd
Trantek Electronics Co Ltd
Wealth Metal Factory Ltd
Beijing New Chuang Si Fang Electronic Co Ltd
Shenzhen Jiaweiyi Technology Limited
My Group (Asia) Limited
Holtek Semiconductor (Shanghai) Inc
Sino-Tech International Holdings Ltd
Sino-Tech International Holdings Ltd
Shenzhen Qiankun Industrial & Trading Development Co Ltd

《国际电子商情》数字版2010年9月刊