| 摘要 |
A voltage supplying apparatus is provided for supplying an output voltage to an electronic circuit. The electronic circuit includes a first voltage-drop device. The voltage supplying apparatus includes a current source for supplying a constant current, a second voltage-drop device, and a regulator. The second voltage-drop device is coupled with the current source and has the same feature in process deviation with the first voltage-drop device. The regulator for stabilizing the output voltage includes a voltage input terminal and a voltage output terminal. The voltage input terminal is coupled with the current source and has a first voltage corresponding to the output voltage. The voltage output terminal provides the output voltage and a corresponding output current. When the output current is deviated due to the process deviation of the first voltage-drop device, the first voltage will be shifted accordingly to offset the output current deviation.
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