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TPS61089升压输出不对

Other Parts Discussed in Thread: TPS61089

我用TPS61089做了个升压电路,参数按照datasheet计算,应该输出5V电压,其中一路开始时输出5V,但是现在突然输出9-10V电压,另一路一样电路,现在还是输出5V,请问这种情况是芯片烧了,还是其他原因

输入是3.8V,目前一直是空载测试,还没有加负载