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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/q89481240/archive/2011/7/20/230476.html2011/7/20 23:08:00
件下，可以减小镇流电阻，使功耗降低一半。图5b给出了六个不同led驱动电流的变化范围：15.4mA至19.6mA，由厂商A提供的led电流变化更小一些，来自厂商A和厂商b的led平
http://blog.alighting.cn/q89481240/archive/2011/7/20/230473.html2011/7/20 23:07:00
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http://blog.alighting.cn/weking1/archive/2011/7/20/230398.html2011/7/20 11:10:00
A相纳米Al2o3 0571-888 52193 基本信息： cAs#：1344-28-1 A相纳米Al2o3硬度高、尺寸稳定性好，可广泛应用于各种塑料、橡胶、陶瓷、耐
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