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TLV1117,输出问题，非常奇怪

yunling xing
Intellectual 402 points
Other Parts Discussed in Thread: TLV1117, TPS5430

情况是这样的，我用TPS5430由12V转5V，再由TLV1117-3.3转3.3V，主要给CPU供电。轻载的时候可以正常供电。稍微加一点载，注意是稍微加一点，实测3.3V端电流还不到200mA.3.3V电源会下降，导致CPU复位，CPU会一直处在复位状态，直到把加的负载去掉。TPS5430也会略有下降，会跌落到4.8V左右。TLV1117输出端接100UF电容。TPS5430典型5V供电电路。