I am using an LM2776DBVR on a prototype PCB. It is supposed to create a -5v rail from a +5v rail generated from two AAs in series with a TPS61222DCKR. The problem I'm having is that the output of the LM2776DBVR is +720mV when I connect the batteries, despite the TPS61222DCKR giving out a clean +5v. If I briefly short the output of the LM2776DBVR to 0v, then it begins to regulate -5v properly! Could you help determine the cause of this fault? I've noticed others on the forum with the same issue but no solutions. Hopefully someone knows the answer who has hit this problem before! Thanks!
Here's the schematic:
imgur.com/a/S20Gj
Here's the layout:
imgur.com/a/fmOOU
