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附件为原理图，电路确定短路，但是加上电源后，电源输出电流50mA左右，芯片渐渐发烫，不知道啥问题，希望懂的人指教一下，谢谢
我看了一下典型应用电路, 基本上 Vi 都是接到内部的三极管 b, 可能这是跟你电路的区别
