BQ40Z80: How to connect CHG pin if not used?

Hello Ryker,

It is not recommend to not use the CHG pin but you could leave the CHG pin floating.

Thank you,

Alan

Hello Ryker, 

    Sorry for the confusion but if you are designing a external balance circuit using a TI gauge BQ40Z80 I would rely on the image below, seen located in the previously mention post. As a designer of the PCB your team would have to modify some aspect of this schematic such as connector for load/battery, select LED to be on the board, determine if the FETs are right for your application and etc. If this project is still in early development of the hardware stage I would recommend using the EVM to do a proof of concept of the system. 
    I believe you are asking about how to wake up from shut down mode and I would review the Datasheet, User guide, and Application note under the Technical documentation. I also attached the links below to some of them below aswell.

Datasheet:
https://www.ti.com/lit/ds/symlink/bq40z80.pdf?ts=1739388556861&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FBQ40Z80

User guide:
https://www.ti.com/lit/ug/sluubt5c/sluubt5c.pdf?ts=1739388578242&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FBQ40Z80

Thank you,
Alan