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使用 LP8556-E00 背光电压突变



输入电压3.5V~5V

输出18V/60mA.

开机正常18V, 几分钟后电压直接跳跃到30V

寄存器的值全部默认值,更改A9h寄存器也没有用,请帮忙分析是什么问题

Iset电阻24K

Fset 0 接到地