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给朋友修一LED发光设备,线路板上的DC-DC芯片炸碎(SOP8封装),找不到一点痕迹,根据实物画出有关部分线路图,请经验丰富的高手,指导一下,本人查了一些相关的芯片,没有这种引脚方式的,根据电路分析,其输出电压应该大于5V,我很为难.
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