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请问TPS61030带纯阻性负载电压被拉低的现象是否正常

Other Parts Discussed in Thread: TPS61030

您好 我用TPS61030做了一个单锂电池升压的电路,负载为4.4欧左右电阻时电压被拉低到4.7V左右,输出电流1A多,但是负载为手机时电压并无明显降低,电流表串入电路测得电流为950ma左右,电压5.02V,请问这种情况是什么原因?是否正常 谢谢