| 摘要 |
A variable voltage driver circuit using a current detector is disclosed. The circuit includes a voltage generator, a voltage detector for detecting an output voltage of the voltage generator, a delay unit connected with the voltage detector for feeding back a signal to the voltage generator, a pulse generator for receiving a signal from the voltage generator and generating a pulse, a current-pulse generator for detecting a current in accordance with a signal from the pulse generator, a voltage drop detector for detecting a voltage dropped in the signal from the current-pulse generator, a latch for storing a signal from the voltage drop detector, and an extra-voltage driver for supplying a current in accordance with a latch signal when the current is small. In the present invention, when a normal voltage is generated by the voltage generator, the current supplied from the driver is measured. As a result of the measurement, if the current is small, the current is supplied by driving the extra-voltage driver.
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