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TPS61022: 输入2.5-4.2v;输出5V但不能带载

Part Number: TPS61022


用TPS61022设计的升压电路。输入2.5-4.2v;输出5V但不能带载。1A放电,输出电压直接到0v。从0.1A升到1A,输出电压不会直接到0V但会一点点降低,当电流升到2A,输出电压会到0v。

这是我的PCB布局。