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求助!求助!LM2662输出尖峰问题

Other Parts Discussed in Thread: LM2662

本人电源小白,最近使用LM2662制作电源反转,输入5V输出-5V,带小负载输出出现尖峰,尖峰频率很高精密运放的在这个频率PSRR很小,输出端并小电容后尖峰仍有60mV,尖峰应该是内部开关切换造成的,求解决方法,是不是PCB有问题