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LM3550: Can't Charge Issue

Part Number: LM3550

Hi, Team,

My customer used the LM3550 as followed, they found the LM3550 can't charge the output cap. The register 0x10H can be read as 0x32, the register 0xA0 as 0xC7.

There is no votage as C2,C3, C7, C8, C11. How about you suggestion for this? Thanks!