Hi @gd556,
Okay, so far everyone is speculating, but we can't give you a good answer without information.
I hear you asking about the problem possibly being a charging IC issue, but for most of us that wouldn't be our first suspect, so to get started, why do you think it might be the charging IC? Is this based on some diagnosis or just one of the things that you ran across on the internet that describes your problem?
Speaking of which, what have you done so far to investigate this? When I have a problem I don't know how to fix, I start with the basics. In this case, that means verifying rather than assuming that power is getting to the iPad in the first place. Have you checked that your charger and/or charging cord is working, either by swapping them out for another one, trying them on another device or, depending on your level of expertise, measuring the voltage output with a voltmeter.
Once the source of power has been checked, the next point of failure to look at is the charging port itself. Take some microfiber cloth, 90% or higher isopropyl alcohol and a toothpick and clean out the charging port. Dust, dirt, lint and stuff can get in there and get packed at the bottom keeping the plug from fully engaging. In addition, take a magnifying glass and a bright light and look inside to a) verify you've got it cleaned properly, and b) to check for bent, broken or missing pins inside the connector.
If you haven't found any issues so far, plug it in and try wiggling the cord, up & down, left & right, etc., to see if there's a loose connection; moving it will possibly make contact at some point, so you may get some indication of charging when held a a particular position. If you get anything there, that would indicate that the charging port itself is damaged and may be loose from the motherboard and in need of replacement.
Finally, plug it into a computer and see if it's recognized; that will tell you if it's somehow just comatose or if your hardware connection via the lightning port is out of order.
So get back to us with what you've checked so far, and if you haven't already, go through this list and let us know what you find. Once we have that information, we may be able to actually help you. It could indeed be a charging IC problem, but nobody here is going to assume that without good reason. In order to reach that diagnosis, there are several checks that would need to be done inside the case with a volt/ohm meter.