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LM2776: 关于2776的疑问

Part Number: LM2776

我们在量产的时候发现:2776存在两种异常状态,1:输出短路

2:S4短路,输出0.6V

对于原理框图的疑惑:1.框图中用反相器,是否会导致四个管同时通,还只是示意图。2:四个开关对闩锁有没有做处理