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LP5030: IC supply voltage and I2C level

Part Number: LP5030

Dear expert,

My customer have the same concern as E2E post in below link.

https://e2e.ti.com/support/power-management/f/196/t/820062?tisearch=e2e-sitesearch&keymatch=LP5030

based on this post, there are no connection between VCC and OUT.

May I learn from you about the connection of VCC and I2C interface?

If VCC is 5V and I2C of host is 3.3V, should I add a level shift device between host and LP5030?

Thanks

Ben