A call againt a small stack (1.10)

[RoyalLance]

Ultimate Bet No-Limit Hold'em Tourney, Big Blind is t100 (6 handed) FTR converter on zerodivide.cx

BB (t1075)
UTG (t1220)
Hero (t3120)
CO (t3285)
Button (t3380)
SB (t2920)

Preflop: Hero is MP with A[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to t300</font>, <font color="#666666">3 folds</font>, BB calls t200.

Flop: (t650) 4[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets t650</font>, <font color="#CC3333">Hero ...</font>

I was thinking once the big bing called my raise pre flop, the he would have no choise but to put the money all in no matter what hand he has. Since the guy called in the big blind I figured he may may have rags or a weaker ace that missed the flop. Should I set the guy all in or should I give up the pot while it's still small?