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 and a second output configured to provide a second driving voltage, wherein the second driving voltage is higher than the first driving voltage, - 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 and a second output configured to provide a second driving voltage, wherein the second driving voltage is higher than the first driving voltage, - 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.