Patent ID: 7196572

Claim:
An integrated circuit for stabilizing a voltage comprising: an input terminal that applies a supply voltage; an output terminal that generates an output voltage; a first controllable resistance including a resistance value that is controlled by a first control signal; a second controllable resistance including a resistance value that is controlled by a second control signal; a charge pump; and a control circuit to control the first and second controllable resistances; wherein: the input terminal that applies the supply voltage is connected to the output terminal that generates the output voltage via the first controllable resistance; the charge pump is connected, on an output side of the charge pump, to the output terminal to facilitate generation of the output voltage via the second controllable resistance; and the control circuit is configured to generate and respectively feed the first and second control signals to the first and second controllable resistances such that the ratio of the resistance values of the first and second controllable resistances is controlled in a manner dependent on a ratio of an actual value of the supply voltage to a desired value of the supply voltage which results in the output voltage being corrected to a desired value of the output voltage.