A buck boost voltage converter circuit has a capacitor pump circuit for boosting an input voltage in a first mode of operation when {HEAD ~ an input voltage} is below {TAIL ~ a desired voltage level} 
is below
A buck boost voltage converter circuit has a capacitor pump circuit for boosting an input voltage in a first mode of operation when { HEAD ~ an input voltage } is below { TAIL ~ a desired voltage level }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL