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安森美半导体推出业界首款10 A超级电容 LED闪光驱动器,用于超薄照相手机和数码相机  Japanese Korean

新的NCP5680集成型LED闪光和电源管理方案采用0.55 mm薄型封装,延长电池使用寿命,并显著提升数码照片质量

2009年6月25日 – 全球领先的高性能、高能效硅方案供应商安森美半导体(ON Semiconductor,美国纳斯达克上市代号:ONNN )推出NCP5680经过优化的超级电容之发光二极管(LED)闪光驱动器,能为超薄照相手机和小巧数码相机的闪光灯和视频摄像灯(video light)提供达10安培(A)的电流。

安森美半导体低压电源管理产品总监Marie-Therese Capron说:“NCP5680结合了超薄棱形超级电容,为超薄照相手机和数码相机提供了极佳的LED闪光和电源管理方案。这全面的LED闪光方案的光度可媲美氙气闪光,但高度仅为后者的一半,且无需额外LED来拍摄视频。NCP5680使锂离子电池令更多耗电功能可更长时间工作,这新的基于超级电容的电源管理方案让智能手机能提供更加丰富的功能。”

安森美半导体的NCP5680结合最新纤薄棱形超级电容,例如由CAP-XX提供及村田制作所授权的电容电压为5.5 V时电容达0.9 F,以及Osram提供的大功率LED OSLUX NCP5680与锂离子电池相辅相成,为闪光照明提供达10 A的大峰值电流,并为与CAP-XX开发的BriteFlash™电源架构一起使用而优化。完全可编程控制的超级电容充电及放电和独特的过载保护,确保为高质量的摄影提供恰当的光。NCP5680这集成驱动器还能为音频放大器等便携系统中的其它大峰值电流电路供电,延长有用的电池工作时间。

500万像素或更高分辨率的相机为了在弱光下拍得高分辨率的照片,需要高亮度的闪光。当今的白光LED能够提供这个等级的光能,但需要比相机电池能提供的能量高出近400%。安森美半导体的NCP5680配合电池,管理一颗超级电容来驱动LED闪光至充分亮度,提供达10 A的大峰值电流。NCP5680中的集成驱动器还管理超级电容,处理其它峰值功率功能,如变焦、自动对焦、音频、视频、无线传输、全球卫星定位系统(GPS)数据读取及射频(RF)放大,延长电池使用时间而不放弃纤薄型设计。

NCP5680集成了超级电容充电、浪涌电流管理和LED电流控制所需的全部电路,节省设计人员的开发时间、电路板空间及元器件成本。超级电容充电和放电完全可编程控制,确保为高质量拍照提供恰当的光。

以I2C接口提供灵活的控制
NCP5680中的I2C寄存器让用户能实时调节两颗LED中各颗LED的输出电流及闪光持续时间。所以这方案能提供不同的光照效果,如指示灯、预闪光、拍照用功率闪光灯,及视频摄录用电筒光。NCP5680连接至环境光传感器时,会自动限制闪光持续时间,防止照片过度曝光,以保障照片质量。此外,超级电容充电电流可以I2C寄存器调节。NCP5680能在全球移动通信系统(GSM)传输期间关闭充电工作,从而限制电池的电流消耗。

安全保护特性
NCP5680还有多项内置保护机制,包括闪光超时(flash time out)、温度检测、过载保护及短路保护。这器件保护闪光电路免受驱动电路及LED任何故障的影响。

封装及价格
NCP5680采用3.5 mm x 3.5 mm x 0.55 mm µQFN-24封装,每3,000片批量的预算单价为1.10美元。

更多技术信息请访问http://www.onsemi.cn 或联系Helene Acrosse(电邮:helene.acrosse@onsemi.com)。

关于安森美半导体(ON Semiconductor)
安森美半导体(ON Semiconductor,美国纳斯达克上市代号:ONNN)拥有跨越全球的物流网络和强大的产品系列,是电源、汽车、通信、计算机、消费产品、医疗、工业、手机和军事/航空等市场客户之首选高性能、高能效硅方案供应商。公司广泛的产品系列包括电源、模拟、数字信号处理器(DSP)、混合信号、先进逻辑、时钟管理、非易失性存储器和标准元器件。公司的全球总部位于美国亚利桑那州菲尼克斯,并在北美、欧洲和亚太地区等关键市场运营包括制造厂、销售办事处和设计中心的业务网络。欲查询公司详情,请浏览安森美半导体网站: www.onsemi.cn

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安森美半导体和安森美半导体图标是Semiconductor Components Industries, LLC的注册商标。所有本文中出现的其它品牌和产品名称分别为其相应持有人的注册商标或商标。虽然公司在本新闻稿提及其网站,但此稿并不包含其网站中有关的信息。

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