MP5424 I2C communication

DC-DC Power Converters
1

Regarding I2C communication with the MP5424:

When PWRON is 0V,
I think I can be possible a I2C communication between device and CPU.
because,the shutdown current have a current consumption of 25uA.
Is this correct?

2

Hi @shinichiro_moritaka ,

The I2C interface of the MP5424 is powered by an internal 2V supply. The 2V supply is enabled if VINx exceeds its UVLO threshold during the start-up sequence. The start-up sequence is initiated when PWRON pin is pulled high, so you will need to supply at least 1.2V on PWRON pin to utilize I2C.

Thanks,
Rubas