An electronic control apparatus includes an exclusive power source wiring for a charge pump circuit which is discriminated from a common power source wiring. The exclusive power source wiring is connected to the common power source wiring via a via-hole va having the impedance larger than that of the wiring pattern. Similarly, the electronic control apparatus includes an exclusive ground wiring for the charge pump circuit which is discriminated from a common ground wiring. The exclusive ground wiring is connected to the common ground via an additional via-hole vb. Furthermore, a noise-suppressing capacitor C is connected between a power source wiring and a ground wiring. The power source wiring interposes between the via-hole va and the exclusive power source wiring, and the ground wiring interposes between the via-hole vb and the exclusive ground wiring.