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TPS7A02: TPS7A0218 chip pin1 marking

Part Number: TPS7A02

Tool/software:

We are using LDO TPS7A0218PYCHR, DSBGA package for one of our designs. During assembly of components, we are facing challenge. We are not able to locate the first pin on the chip. Please help us. I am attaching chip zoom image. Please mark pin 1 on the image. Thank you.https://drive.google.com/drive/folders/1qAFNK4VqwDxYP8dQFU9cidsGX_LXREPa?usp=sharing

https://drive.google.com/file/d/1MhE-jsVqnKu298lfKVjLLNnyFvoIZXdK/view?usp=sharing

drive.google.com/.../view