Load controller

A load controller, comprising:

• an input circuit which detects that a drive instruction signal by an operation of a drive instructing unit is less or equal to a first input threshold value;
• a constant current source activated in accordance with a detection by the input circuit;
• a PWM signal generating unit that is activated by the constant current source and generates a PWM signal having a prescribed frequency and a duty ratio;
• a comparator that is activated by the constant current source and compares the drive instruction signal with a second input threshold value set to be lower than the first input threshold value;
• a logic calculation unit that carries out a logic calculation of the PWM signal supplied from the PWM signal generating unit with a compared result supplied from the comparator;
• a drive control unit that operates in accordance with an output from the logic calculation unit to generate a PWM drive control signal;
• and
• a load driving element that is driven by the PWM drive control signal supplied from the drive control unit so as to PWM-control a load.