The present invention relates to a PWM input circuit of a motor driving apparatus for a fuel pump that prevents circuit burnout even when a voltage greater than or reversed from the voltage of an input signal is input. A PWM input circuit of a motor driving device for a fuel pump according to the present invention includes a power supply unit for supplying power of a first voltage; first to third resistors for dividing the first voltage; an input terminal connected to a first node between the first resistor and the second resistor and receiving a PWM signal from the outside; a capacitor having one end coupled to the first node and the other end connected to a first ground; and an output terminal for outputting a voltage between the second resistor and the third resistor.
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