Voltage Reference from a Battery Charger IC

[ziggyfish]

Hi,

I am currently looking for an IC to charge a 6S battery when I plug an adapter into it. The one I am thinking of using is the bq24630.

The great advantage of using this IC is that it comes with a 3.3 output voltage reference (VREF), with a regulation voltage of 3.267 to 3.333 which is stable enough for my purposes. However, it only supports a 35mA current draw. However, I need a 1-2A current output to run the rest of the system. (the output of the charger IC voltage will be used directly to other components of the system, i.e., I need 3.3V and a VBAT(22V to 28V @ 13A) rail).

My question is considering that the I already have a 3.3 VREF and in the interest of cutting down the component costs (and possibly better efficiency gains too), is it wise to use this VREF, and if so is there a way to use this VREF to power larger loads?

Would using this VREF be better than using say a buck converter?