(((ssaunders95)))
I'm sorry that your husband was abusive and drunk to the point of blacking out. That's not good at all.

Is drinking a very regular part of his life? How old are your children?
I would definitely start with a recommendation that you seek professional assistance. Not just for yourself, or your hub, but also for your children. Children pick up on all SORTS of things. It's not uncommon for children of abusers to become abusers themselves as they become older. Other children of abusers fall onto the other side of the spectrum and frequently become involved throughout their lives with other abusers. NOT a good atmosphere for children to be present.
You deserve to be treated well. You deserve love and affection ~ not physical and emotional harm. Your children are the most important aspect...THEY need you to protect them from physical and/or emotional harm & children pick up on the intense negative emotions very early in life.
I'd leave a note saying that you had to leave to protect your kids and yourself from his abusive ways. Don't tell him where you intend to go, or give a phone number, because he will quickly lose his temper and go bananas!! Instead, tell him that you'll contact him _____. Get in with a T asap, by yourself and your children. Let them help guide you on where to go from there.
You don't need to let it go ~ it *could* be worse. Please get out today! (((gentle hugs)))