MP2731 compatibility with 1.8V microcontroller

[adownengineering]

I am hoping to confirm if the I2C bus on this DC/DC is compatible with 1.8V levels? I have a low power microcontroller running off a 1.8V supply and I would like to interface without the use of level shifters (for cost efficiency and board space).

[mpsnow.bryan]

Hello adownengineering,

Thank you for visiting the MPS Technical Forum. Please see from Pg. 10 of the datasheet the Electrical Characteristics table below. The SDA/SCL pins can support up to 5V, but it just so happens the pull-up voltage sample condition we use in the table is also 1.8V