Patent ID: 7863869

Claim:
A circuit for current regulation, comprising: an error determination circuit having at least a first input and an output, wherein the error determination circuit is arranged to provide an error signal at the output based, at least in part, on the difference between a value of a signal at the first input and a reference voltage; a sense selector that is arranged to select a sense signal from a plurality of sense signals, and to selectively couple the selected sense signal to the first input of the error determination circuit, wherein the selected sense signal is based, at least in part, on a current through a load; and a current path selector that is arranged to selectively enable a selected current pathway from a plurality of current pathways, wherein the circuit is arranged such that the current through the load is regulated based, at least in part, on a resistance associated with the selected current pathway, wherein the circuit is arranged to enable the current through the load to be regulated to a selected one of a plurality of different independent values.