What is "VDCI" in terms of output voltage?
From a bit of Googling, it seems that this is terminology used in voltage source devices to mean VDC from an inverter. I'd guess that the lack of a + in front of the 5.0V is just a typo.

That being said, it may also be that they OCR'ed the data from a PDF, and it mistook a close-bracket as an 'I', i.e. "Something (+200VDC)" became "Something +200VDCI".