Good day!
I am working on custom device with BQ25892 as a power path management IC. My power path design is following: Vbus = 12v, Vsys = 3.6-4.2v (default). The SYS voltage is further boosted up to 5 volts which is a main logic voltage level for the rest of the device. So now I'm trying to set-up the communication between the host uC (which is 5-volts powered) and BQ25892 via I2C bus. And I'm really confused about if I can pull-up BQ25892 SDA/SCL lines through a 10-kOhm resistors directly to 5V rail (as it is said in BQ25892 reference manual - "Connect SDA/SCL to the logic rail through a 10-kΩ resistor"). Would it be right and safe for BQ25892? Or maybe I should use a level-shifting between the HOST_SDA/SCL and BQ_SDA/SCL? But which rail should I use to pull-up to in that case - BAT, SYS?
Thanks in advance!
Cheers.
