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请问TPS79633DCQR 19+与21+ 丝印一样，但是字体不同，请问是正常情况吗？请帮忙回复，谢谢！
HI
TI 判定芯片质量的唯一标准是购货来源，建议直接找TI购买。
marking容易伪造，从marking看只要是TPS79633就应该没有问题，低下的有差异应该是没有问题的。
