PSR about LDO, especially error amplifier

[snang]

Hello, I have a question about the PSR of an LDO. The circuit diagram is shown in the image below.


As the current of the EA increases, the PSR at DC also increases. Is this because both gdsg_{ds} and gmg_m increase as the current increases?

 

[dick_freebird]

What increases the EA current, for this remark?

To the extent that PSRR comes from loop DC gain
the PSRR swing is more about the pass FET swinging
from saturation and gain, to linear low gain. You
get to stabilize all corners of application.

 

[KlausST]

seems to be an IC design question....