LIGHT EMISSION DRIVE DEVICE AND VEHICLE LAMP

A light emission drive device includes a current supply unit, which supplies driving current to a light emitting element, which performs light emission of a first function and light emission of a second function, a controller, which controls the driving current so as to have a current value depending on a dimming voltage, and a dimming voltage generator, which generates the dimming voltage. The dimming voltage generator applies a voltage, obtained according to the resistance value of a connected external resistor, to a voltage buffer, and controls the output voltage of the voltage buffer according to whether to perform light emission of any one of the first function and the second function so as to generate the dimming voltage.