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https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1357588/lp2989-lp2989aild-5-0-nopb-there-is-no-any-mark-on-the-chip-surface-is-there-any-explain-document-tks
LP2989AILD-5.0/NOPB，芯片表面没有任何标记，有没有解释文件？ Tks~ć
双
您从何处购买此产品？ TI 器件上必须有标记。 如果您从 TI 购买、请退回此材料。
此致、
Prakash L
