×

具超乎想象的小尺寸TPS7510x型LDO白光LED驱动器设计

消耗积分:0 | 格式:PDF | 大小:184KB | 2017-04-12

黄桂强

分享资料个

具超乎想象的小尺寸TPS7510x型LDO白光LED驱动器设计

  Use of white-LED drivers has increased in recent years due to the popularity of color LCD screens on most portable electronic equipment. The white backlight required to bring out the color in these screens is most often provided by white LEDs. In applications powered by a one-cell Li-ion battery, charge pumps or boost converters have been required to drive these LEDs because of their high forward voltage (4 V typical)。 As white-LED technology has advanced, the forward voltage required has significantly dropped. Today, white LEDs such as Nichia’s NHSW046 or NSSW100C are available with a typical forward voltage of less than 3 V. The lower forward voltage eliminates the need for voltage boosting, permitting the use of linear regulation topologies that reduce costs and solution size and increase efficiency across the battery-discharge range. Figure 1 compares the efficiency and battery voltage of the Texas Instruments TPS7510x and a typical series LED boost

声明:本文内容及配图由入驻作者撰写或者入驻合作网站授权转载。文章观点仅代表作者本人,不代表电子发烧友网立场。文章及其配图仅供工程师学习之用,如有内容侵权或者其他违规问题,请联系本站处理。 举报投诉

评论(0)
发评论

下载排行榜

全部0条评论

快来发表一下你的评论吧 !