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Simply put, the TPS65218D0 is a device that is functionally equivalent to the TPS65218 (-B1 version) that meets the majority of the original target specs of the device. They are pin-2-pin compatible and functionally equivalent. The TPS65218D0 is replacing the -B1 version, and they are a not complementary devices. 差别不大。可以先不改试试，谢谢。
