Patent ID: 7427853

Claim:
A power regulator comprising: a first node, wherein a first voltage developed at the first node is used to produce an output voltage of the power regulator; a first transistor having a control terminal, wherein the first transistor is coupled between a first supply voltage and the first node, wherein the first transistor is operable to supply current to the first node when the first transistor is conductive; a second transistor having a control terminal, wherein the second transistor is coupled between the first node and a second supply voltage; and a first control circuit coupled to the control terminal of the first transistor and to the control terminal of the second transistor, wherein the first control circuit is operable to generate burst-pulses and use the burst pulses to control the first transistor and the second transistor during start-up of the power regulator to ramp up the output voltage of the power regulator, thereby limiting the current supplied to the first node during start-up; wherein a width of the burst-pulses is programmable in the first control circuit.