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TPS7A6633 发烫厉害



TPS7A6633应用电路如下:

输入24V。

输出3.3V,输出电流0.03A。

发现这颗IC发烫厉害。 但是我看这颗IC的datasheet发现他的IGND应该是很小的(uA级别),为什么会这么烫呢?下面是datasheet中的图表。