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LM27761: 电容或芯片啸叫

Part Number: LM27761

  

这是我的电源拓扑结构,通电后发现有高频的电流声音,通过排查后,确定是LM27761电路啸叫,负载电流约1mA,去掉负载,啸叫声依然存在。去掉IC或者CPOUT电容,则声音消失。