Voltage supply

A voltage supply provided by switched-mode driver integrated circuit (IC). IC has an output bridge (Full bridge or H-bridge circuit) with first and second circuit branches, each of the circuit branches has an output node 107a, 107b connected between first and second transistor switches 103a, 104a; 103b, 104b for selectively connecting the output node to respective first and second voltages VH, VL. There are discrete (i.e separate) first and second IC die contacts (e.g pads) 208a, 208b for receiving the first voltage, and first and second circuit branches are connected to first and second IC die contacts respectively. Ancillary circuity (e.g bridge drivers, regulators) 105 is configured to receive supply voltage from voltage supply node voltage (intermediate supply node 201) which is connected to first and second IC die contacts via respective first and second respectively matched resistances. Corresponding die contacts (third and fourth pads 209a,209b), matching resistors 204a, 204b and intermediate voltage node 203 may be associated with low side transistors 104a,104b providing required second voltage VL. The resistance value of the matched resistor pair may be higher than corresponding resistance associated with first/second IC die contacts. Switch-mode driver may be used for driving an audio transducer (e.g loudspeaker).