Method for regulating the output voltage (V o) at the output (V out) of a voltage regulator (VREG) for supplying a lighting device, - having a plurality of, but at least two, integrated circuits (IC1, IC2) and - having in each case at least one LED group (LED 1a, LED 1b, LED 2) per circuit (IC1, IC2) with electrical energy by means of a plurality of current sources (LED DRV) each associated with one of these LED groups comprising the steps - Generating an output voltage (V o) by means of the voltage regulator (VREG) at the output (V out) of the voltage regulator (VREG); - Setting of a respective LED group current (I LED1a, I LED1b, I LED2) by the LED groups (LED 1a, LED 1b, LED 2) connected to the output (V out) of the voltage regulator (VREG) by means of one current source (LED DRV) per LED group (LED 1a, LED 1b, LED 2); - Detecting respective voltage drops across the respective current sources (LED DRV) of the respective LED groups (LED 1a, LED 1b, LED 2) as the value of the respective voltage drop of these respective current sources (LED DRV) within the respective integrated circuit; characterized by the steps - Selecting a respective voltage drop value of a current source (LED DRV) of each integrated circuit (IC1, IC2) from the voltage drop values of the current sources (LED DRV) of that respective integrated circuit (IC1, IC2) as a characteristic voltage drop value of that integrated circuit (IC1, IC2), and generating a control value signal at a node (K1, K2) of that respective integrated circuit (IC1, IC2) according to that characteristic voltage drop value of that respective integrated circuit (IC1, IC2); - Reduction of the magnitude of a control voltage (V R) by that respective integrated circuit (IC1, IC2) when the magnitude of the control voltage (V R) is greater than the magnitude of the control value signal at the node (K1, K2) of that respective integrated circuit (IC1, IC2); - Control of the output voltage (V o) of the voltage regulator (VREG) at its output (V out) as a function of the control voltage (V R) and/or a control bus voltage (V RB) derived from the control voltage (V R). - having a plurality of, but at least two, integrated circuits (IC1, IC2) and - having in each case at least one LED group (LED 1a, LED 1b, LED 2) per circuit (IC1, IC2) with electrical energy by means of a plurality of current sources (LED DRV) each associated with one of these LED groups - Generating an output voltage (V o) by means of the voltage regulator (VREG) at the output (V out) of the voltage regulator (VREG); - Setting of a respective LED group current (I LED1a, I LED1b, I LED2) by the LED groups (LED 1a, LED 1b, LED 2) connected to the output (V out) of the voltage regulator (VREG) by means of one current source (LED DRV) per LED group (LED 1a, LED 1b, LED 2); - Detecting respective voltage drops across the respective current sources (LED DRV) of the respective LED groups (LED 1a, LED 1b, LED 2) as the value of the respective voltage drop of these respective current sources (LED DRV) within the respective integrated circuit; - Selecting a respective voltage drop value of a current source (LED DRV) of each integrated circuit (IC1, IC2) from the voltage drop values of the current sources (LED DRV) of that respective integrated circuit (IC1, IC2) as a characteristic voltage drop value of that integrated circuit (IC1, IC2), and generating a control value signal at a node (K1, K2) of that respective integrated circuit (IC1, IC2) according to that characteristic voltage drop value of that respective integrated circuit (IC1, IC2); - Reduction of the magnitude of a control voltage (V R) by that respective integrated circuit (IC1, IC2) when the magnitude of the control voltage (V R) is greater than the magnitude of the control value signal at the node (K1, K2) of that respective integrated circuit (IC1, IC2); - Control of the output voltage (V o) of the voltage regulator (VREG) at its output (V out) as a function of the control voltage (V R) and/or a control bus voltage (V RB) derived from the control voltage (V R).