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TPS54302DDCR和TPS54302DDCT有啥区别，参考电路都一样嘛
主要在包装数量上不一样，带R的是大包，一包3000片，带T的是小包，一包250片。
请查看附件。
包装卷带数量不一样，可参考文档的倒数第三页
www.ti.com.cn/.../tps54302.pdf
