A light emitting diode (LED) voltage driver circuit includes an input terminal to which a voltage is applied, a ground terminal, an input capacitor whose one end is connected to the input terminal and the other end, which is different from the one end, is connected to the ground terminal, wherein the input capacitor is charged by a voltage difference between the voltage applied to the input terminal and a voltage of the ground terminal, and a buck converter circuit connected to the input capacitor and the input terminal and configured to output power to an LED, wherein the voltage charged in the input capacitor is supplied as an input voltage of the buck converter circuit.