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TPS61021调试中遇到输出电压的问题



电路如图,输入1.5V-3.0V,输出3.3V,调试时空载。

现象如下:

1、输入1.5-1.8VV时,输出1.6V;

2、输入2.5V-3.0V时,输出正常。