Patent ID: 8299772

Claim:
A circuit, comprising: a regulator circuit coupled to first and second nodes; a capacitance circuit coupled between the first and second nodes, the regulator circuit coupled to charge a capacitance of the capacitance circuit with a charge current; and a slew rate control circuit coupled between the first and second nodes and coupled to the capacitance circuit, the slew rate control circuit coupled to control a change in voltage over change in time between the first and second nodes during a power up mode of the circuit, wherein the slew rate control circuit further includes a switch and a resistor coupled to the capacitance circuit, wherein the slew rate control circuit is coupled to switch the switch in response to a voltage between the first and second nodes, wherein a voltage drop across the resistor is limited to a base-emitter voltage drop of a transistor coupled between the first and second nodes to set the change in voltage over change in time.