An object of the present invention is to provide a minimum output and the light output control device and method to control the maximum output that provides optimal lighting control when the light output control of the lighting apparatus according to the dimming control. To this end, the present invention is an input unit for receiving the output dimming control value from the outside; Detects the dimming control value from said input unit and compared with a first reference value for determining whether a minimum amount of light output, the comparison detects the dimming control is equal to the force a minimum amount of light control illumination control signal output is less than a reference value, and the detection When the dimming control is above a first reference value control section which outputs a lighting control signal in response to the detected dimming control value; PWM control unit for outputting a PWM operation signal according to the light control signal output from the controller; And a lighting unit that emits light according to the PWM operation signal output from the PWM controller. Therefore, this invention can prevent the occurrence unstable lighting to control the minimum output at the light output control of the lighting apparatus according to the dimming control, in accordance with the elapsed time after lighting at the time of the light output control of the lighting apparatus according to the dimming control It can advantageously provide an optimal light output to control maximum output.