Hello,

I'm currently designing a PCB with a MDBT50Q as the main MCU running micropython. I would like to connect a BNO055 sensor to it.

Datasheet for MDBT50Q: https://www.raytac.com/download/index.php?index_id=43

The MDBT50Q show on page 36 a Reg0 DC/DC Enabled setup where an internal buck converter steps down the voltage. This allows me to connect a 3.6V Lithium Ion directly to the PCB, however, when fully charged (4.2V) this will be too much for the BNO055 sensor which is rated at 2.4V-3.6V. So my thinking was to use VDD (default 1.8V) that is set using the REGOUT0, however, I have no idea how to do this.

Any advice or links would be appreciated.

Thanks in advance.