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为什么LM5085不能支持55V以上的输入?

Other Parts Discussed in Thread: LM5085

LM5085的数据表说该芯片可以支持4.5V~75V的输入(Vin在4.5V~75V之间),但是,贵司的网站上关于LM5085的EVB却要求输入Vin的范围是4.5V~55V。我自己做的板子,完全参考EVB的设计,我的Vin为60V,LM5085进去shutdown模式,PGATE的电压等于Vin。该问题有解决的办法吗?我的Vin为48V~63V。