| 摘要 |
PURPOSE:To provide a motor driver which can efficiently supply a motor with a current from a current driver with one capacitor for phase compensation. CONSTITUTION:A drive current control circuit 14 controls the currents being let flow by the first and second current control elements constituting a current driver for supplying the coil of a motor with a current. This drive current control circuit 14 has a current mirror 50 which causes a specified current to flow to the base of the first and second current control elements, according to the control signals from outside, and further a capacitor 46 for phase compensation is provided on the input side of this current mirror 50. And, this capacitor 46 for phase compensation compensates without phase shift both phases of the currents supplied to the first and second current control elements. |
