This is a charging ic/circuit from an iPhone and there aren’t any datasheets available for it.

I have a few questions:

1. What would the purpose of the series capacitor c2300 on the switching side be for?
2. What are PMID capacitors for?
3. Why would q2301 be used if it looks to always be on when 1.8v is at the gate which is basically all the time when there’s power to the phone

Sorry if the picture isn’t clear it’s a screenshot from my phone

This is a charging ic/circuit from an iPhone and there aren’t any datasheets available for it.

I have a few questions:

1. What would the purpose of the series capacitor c2300 on the switching side be for?
2. What are PMID capacitors for?
3. Why would q2301 be used if it looks to always be on when 1.8v is at the gate which is basically all the time when there’s power to the phone

Sorry if the picture isn’t clear it’s a screenshot from my phone