A regulator and a method for regulating a current through a load. The regulator may include, for example, a first circuit portion configured to alternately apply and remove a voltage across the load in accordance with a first signal, the voltage causing a current to flow, and a second circuit portion configured to generate the first signal so as to have a duty cycle that depends upon an amount of the current and a second signal when the amount of current is below a threshold amount, and to generate the first signal so as to have a duty cycle that depends upon the amount of the current but not the second signal when the amount of current exceeds the threshold amount.