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足led应用的高功率及高效率要求的理想驱动方案。驱动多个led也需要仔细考虑。图1是led的串并联连接电路。其中图1(A)为led的并联连接电路。图1(h)是led的串联连接电路。由
http://blog.alighting.cn/q89481240/archive/2011/8/18/232660.html2011/8/18 1:18:00
c3454是一种同步降压-升压型dc/dc转换器，为用单节锂离子电池输入以高达1A的电流驱动单个大功率led而优化。该器件视vin与led正向电压之间关系的不同，自动在同步降压、同
http://blog.alighting.cn/magicc/archive/2011/8/17/232650.html2011/8/17 22:45:00
常有四种不同的驱动电路：(A) 电压源与镇流电阻, (b) 电流源与镇流电阻, (c) 多路电流源, (d) 一路电流源驱动串联led。图5.各个白色led的正向电压(vf)对调节
http://blog.alighting.cn/magicc/archive/2011/8/17/232648.html2011/8/17 22:44:00
式的闪光灯驱动芯片，sp6686、sp6685和sp7685支持的闪光灯电流分别为400mA、700mA和1.2A。由于它们的开关频率高达2.4mhz，所以输入输出电容和电荷泵电容的容
http://blog.alighting.cn/magicc/archive/2011/8/17/232644.html2011/8/17 22:42:00
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http://blog.alighting.cn/angel1/archive/2011/8/17/232595.html2011/8/17 14:20:00
