Unless you live in Southeast China, or are willing to order thousands of them, you likely cannot. And even if you can find the part, do you have a rework station and the skills to replace it? Beyond even that, are you willing to gamble that it's the only failed part you have -- and that it wasn't another issue that caused the failure in the first place?
The only certain repair is to replace the system board.
eBay, aliexpress and other websites seem to have options relating to your IC, but you might not get a definitive answer unless you reach out to TI since they produce that IC. Of course ejn63 already mentioned this could be a long shot repair, but just telling you this for more information.