A device includes a segmented pull-up current source circuit including a first plurality of transistors, a segmented pull-down current source circuit including a second plurality of transistors, a comparator circuit configured to compare an output voltage level at the output of the device with a target voltage level and generate a comparator output at one of two output terminals of the comparator circuit, wherein the segmented pull-up current source circuit and the segmented pull-down current source circuit are connected to the two output terminals of the comparator circuit via one or more multiplexers, the first plurality of AND gate circuits and a second plurality of AND gate circuits; and a logic circuit connected to at least one output terminal of the comparator circuit and configured to control an operation of the segmented pull-up current source circuit and the segmented pull-down current source circuit based on the comparator output.
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