A voltage regulator exhibits a load line that is piecewise linear. This piecewise
linearity variation has a first constant voltage segment VLEAK at which
output voltage is regulated for output currents less than or equal to the leakage
current IL. The output voltage VLEAK corresponds to the maximum
output voltage allowable at the leakage current for a given operational range specification.
The piecewise linearity variation further includes a second, linearly decreasing
segment that varies from the maximum allowable output voltage VLEAK at
the leakage current to a full load voltage VDROOP at full load current
IFL. This serves to effectively maximize the available output voltage
swing in the presence of a leakage current offset. The piecewise linear load line
is adjustable to accommodate changes in leakage current.