Driver circuit for an electronic display, comprising: - a power supply system configured to provide a reference voltage (Vref), the power supply system comprising a battery and a reference voltage regulator connected to the battery , wherein the reference voltage regulator is configured to provide a default reference voltage (Vref_1) or a depleted reference voltage (Vref_2) as the reference voltage (Vref), - a DC-DC converter having an input and having at least a first output configured to provide a first driving voltage (VL1) and a second output configured to provide a second driving voltage (VL2), wherein the second driving voltage (VL2) is higher than the first driving voltage (VL1), - wherein the DC-DC converter comprises at least a first charge pump having a high voltage port and a low voltage port , the first output being connected to the low voltage port of the first charge pump , the second output being connected to the high voltage port of the first charge pump , - a switch or a multiplexer connected to the input of the DC-DC converter and being configured to selectively connect the input of the DC-DC converter to the low voltage port of the first charge pump or the high voltage port of the first charge pump , - a controller connected to the switch or multiplexer and being configured to determine a voltage level of the battery of the power supply system , - wherein the controller , when the voltage level of the battery drops below a predefined threshold, is configured to switch the driver circuit from a default mode to a depleted mode and to force the reference voltage regulator to switch from the default reference voltage (Vref_1) to the depleted reference voltage (Vref_2) as the reference voltage (Vref), and - wherein, when in the default mode, the input of the DC-DC converter is connected to the high voltage port of the first charge pump , and, when in the depleted mode, the input connected to the low voltage port of the first charge pump . - a power supply system configured to provide a reference voltage (Vref), the power supply system comprising a battery and a reference voltage regulator connected to the battery , wherein the reference voltage regulator is configured to provide a default reference voltage (Vref_1) or a depleted reference voltage (Vref_2) as the reference voltage (Vref), - a DC-DC converter having an input and having at least a first output configured to provide a first driving voltage (VL1) and a second output configured to provide a second driving voltage (VL2), wherein the second driving voltage (VL2) is higher than the first driving voltage (VL1), - wherein the DC-DC converter comprises at least a first charge pump having a high voltage port and a low voltage port , the first output being connected to the low voltage port of the first charge pump , the second output being connected to the high voltage port of the first charge pump , - a switch or a multiplexer connected to the input of the DC-DC converter and being configured to selectively connect the input of the DC-DC converter to the low voltage port of the first charge pump or the high voltage port of the first charge pump , - a controller connected to the switch or multiplexer and being configured to determine a voltage level of the battery of the power supply system , - wherein the controller , when the voltage level of the battery drops below a predefined threshold, is configured to switch the driver circuit from a default mode to a depleted mode and to force the reference voltage regulator to switch from the default reference voltage (Vref_1) to the depleted reference voltage (Vref_2) as the reference voltage (Vref), and - wherein, when in the default mode, the input of the DC-DC converter is connected to the high voltage port of the first charge pump , and, when in the depleted mode, the input connected to the low voltage port of the first charge pump . <EOS>