BQ25630: Quick Question on Vsys

Hi Cameron, 

It is not for the exact part number, but the FAQ post I have linked below describes expected VSYS output in various operation modes for this architecture of charger IC. The BQ25630 is expected to behave in a similar manner. 

 https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1257114/faq-bq25620-how-is-vsys-regulated-for-bq25620-22-and-bq25628-29-what-conditions-determine-how-it-s-regulated-when-is-sysmin-threshold-valid  

Cameron Perl said:

Is the minimum set by VSYSMIN constantly being monitored or is it only applicable when USB power (or external power) is applied? If there is no external power, will VSYS track the battery voltage?

VSYS is only guaranteed be regulated above VSYSMIN when an input adapter is present. If only battery is present VSYS will track the battery voltage as it discharges. 

Best Regards,

Garrett