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PTD08D210是不是坏了

Other Parts Discussed in Thread: UCD9248

自制的板子上采用UCD9248+PTD08D210电源方案,电流很大,断开PTD08D210与负载的连接,发现输出阻抗只有几欧姆,是不是可以判断PTD08D210坏了?