Touch driving circuit

A touch driving circuit, comprising:

• a charge pump, configured to output a plurality of currents;
• a plurality of regulators, coupled to the charge pump, and configured to output a plurality of charging voltages according to the plurality of currents;
• a plurality of digital to analog converters, coupled to the plurality of regulators, and configured to output a plurality of driving voltages according to the plurality of charging voltages,
• a switch circuit, coupled to the plurality of digital to analog converters and a touch panel, and configured to output the plurality of driving voltages in a time-sharing manner to form a driving signal for the touch panel,
• wherein the plurality of regulators comprises:
• a first regulator, coupled to the charge pump, and configured to receive a first current and output a first charging voltage;
• a second regulator, coupled to the charge pump, and configured to receive a second current and output a second charging voltage;
• a third regulator, coupled to the charge pump, and configured to receive a third current and output a third charging voltage;
• and
• a fourth regulator, coupled to the charge pump, and configured to receive a fourth current and output a fourth charging voltage.