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TPS61196: 多芯片输出电流不一致

Part Number: TPS61196

我们有个产品使用了两颗TPS61196,两颗芯片是同样的电路,设置电流为140mA,正常工作时为60%占空比,测试发现两个芯片输出的RMS电流分别是85mA和80mA,是否属于正常误差?

若不属于正常误差,还请告知正常误差应该为多少?