Reversibly transfers an adenylyl group from ATP to 4'-phosphopantetheine, yielding dephospho-CoA (dPCoA) and pyrophosphate. (R)-4'-phosphopantetheine + ATP + H(+) = 3'-dephospho-CoA + diphosphate Cofactor biosynthesis; coenzyme A biosynthesis. Monomer. Belongs to the eukaryotic CoaD family.