A33 OLINUXINO Board

[aungkokothet]

Hello

I am looking into the existing reference design here: https://github.com/OLIMEX/OLINUXINO/tree/master/HARDWARE/A33

I have a question on AXP223.

I understand AXP223 has IPS Power Path Management and Flash Charger part
for USB or External or Battery power with charging circuit, however, for
our design, we only need external power.

I assume that parts T1, R35, C85, C89, R40, C93, C96, C98, and L7 for fast
charger are not required. I just need to connect IPSOUT to VIN_CHG only.

Is my understanding correct?

And, what do we do with the unused pins? (N_BATDRV could be float as it is
the output, BATSENSE, LOADSENSE, CHSENSEN, CHSENSEP could be grounded?
LX_CHG1&2 could be Float? TS Could be float?)

Regards
Aung