Low resistive load switch with output current control

A circuit for providing a switchable current linkage between a first terminal and a second terminal, the circuit comprising:

• a transistor device that acts as a switch device;
• a charge pump circuit, wherein an output node of the charge pump circuit is coupled to a control terminal of the transistor device and an input node of the charge pump circuit is coupled to a predetermined voltage on the circuit, and wherein the charge pump circuit is adapted to generate a boosted voltage that has the same sign as a voltage at the input node of the charge pump circuit but a greater magnitude than the voltage at the input node of the charge pump circuit;
• and
• a drive circuit coupled to the charge pump circuit,
• wherein the drive circuit is adapted to provide feedback control for controlling a current flowing through the transistor device based on a quantity indicative of the current flowing through the transistor device or a voltage drop across the transistor device;
• and
• the drive circuit is further adapted to:
• control a magnitude of the voltage at the input node of the charge pump circuit in accordance with the feedback control, or control a magnitude of a voltage at the control terminal of the transistor device in accordance with the feedback control when being coupled to the output node of the charge pump circuit and being supplied by an output of the charge pump circuit,
• wherein the drive circuit is coupled to the input node of the charge pump circuit, and wherein the drive circuit is adapted to control the magnitude of the voltage at the input node of the charge pump circuit in accordance with the feedback control, by sinking a current from the input node of the charge pump circuit or by sourcing a current to the input node of the charge pump circuit.