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LM5122过载输出电压问题

Other Parts Discussed in Thread: LM5122, UC3843

我用LM5122做了款DC-DC的升压电源,经测试带载与效率都没有问题。现有一个问题就是,当输出过载时,如果负载不减轻时没有输出电压,我有在论坛上看到这款IC是不能实现过载维持低电压输出的,是否是这样。我们有用UC3843做过相同的产品,这款是可以限制输也功率的,它的最低开启工作电压是8.4V,有没有更低开启工作电压的IC推存呢?