Patent ID: 8659344

Claim:
An electronic circuit with a power supply regulator circuit that is partly implemented in an integrated circuit, the power supply regulator circuit comprising: a power supply input; a regulated power supply output for supplying an output voltage; a first and a second output transistors with main current channels coupled in parallel between the power supply input and the regulated power supply output, the first output transistor being integrated in the integrated circuit, the second transistor being located outside the integrated circuit; a first driver circuit coupled between the regulated power supply output and a control electrode of the first output transistor; a second driver circuit with an input for receiving an indication of a current supplied by the first output transistor and an output coupled to a control electrode of the second output transistor, the second driver circuit being configured to initiate a rise of current through the second output transistor in response to detection that the indicated current through the first output transistor exceeds a threshold level, at least until the indicated current through the first output transistor has dropped below the threshold level.