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有关LM5119和LM25119电压问题

Other Parts Discussed in Thread: LM25119

@TI技术支援团队。在使用LM2519的时候遇到一个问题,25119的耐压是42V,但是我有一款电源的输入电压会到80V, 那么我能不能先25119的供电前做一级42V以内的稳压来解决 ?这样,我仍然能用LM25119来做生产 ?