limited history on villain, ~30 hands, starting to shape up a bit loose passive though, no reads

limp call say low-mid pp, sc though given his loose tendencies I think his range is wider than this, as play went on his stats widened to around 50/3 but i ofcourse didnt have that info during this hand.

NL Holdem $0.10(BB) Poker Stars
SB ($6.27)
BB ($12.78)
UTG ($5.56)
UTG+1 ($4.60)
Hero ($16.35)
MP1 ($7.20)
MP2 ($5.65)
CO ($11.07)
BTN ($9.35)

Dealt to Hero A A

UTG calls $0.10, fold, Hero raises to $0.50, fold, fold, fold, fold, fold, fold, UTG calls $0.40

FLOP ($1.15) 6 4 2

UTG checks, Hero bets $0.80, UTG raises to $5.06 (AI), Hero?

i feel like his range is probably sets, low over pairs, flushes, nut flush draw. I don't feel like I can accurately assess his range because i tend to be wrong in these kind of situations, but what i have run through stove says its probably a marginal call. I tend to find myself getting stacked in these situations though so am being wary of getting stuck on my AA/KK