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TPS62140: 芯片的应用问题

Part Number: TPS62140


请帮忙检查一下原理图和Layout是否正确? TPS62140ARGTR芯片电路输入6v以内,输出电压是正常的;但是7v输出电压就一直往下掉,不知道是不是芯片本身的问题