Patent ID: 8384306

Claim:
A method of forming a charge pump controller comprising: configuring no more than three alternately switched switches of the charge pump controller to couple to a capacitor including configuring at least one current carrying electrode of each of the no more than three alternately switched switches to be connected to at least one plate of the capacitor wherein the no more than three alternately switched switches are configured to couple the capacitor in a charging configuration during a first time period and to couple the capacitor to supply a current to an LED during a second time period; coupling a first transistor, as a first switch of the no more than three alternately switched. switches, between a first output of the charge pump controller and a supply voltage input of the charge pump controller wherein the first output is configured to be coupled to a first plate of the capacitor and to a first terminal of the LED; and coupling a second transistor, as a second switch of the no more than three alternately switched switches, between a second output of the charge pump controller and the supply voltage input wherein he second output is configured to be coupled to a second plate of the capacitor.