| 摘要 |
In a basic circuit of a booster circuit, two charging units perform a charging operation and two boosting units perform a boosting operation (discharging operation). One of the charging units is connected to a voltage input and the other is connected to a voltage output. The charging unit that is connected to the voltage input includes three parallel connected MOS transistors Q 11 , Q 12 , and Q 13 , the other charging unit includes a MOS transistor Q 4 . One of the boosting units is connected to the voltage input and the other is connected to the voltage output. The boosting unit that is connected to the voltage input includes three parallel connected MOS transistors Q 31 , Q 32 , and Q 33 , the other boosting unit includes a MOS transistor Q 2 . Q 11 and Q 31 are turned ON immediately after start up, then Q 12 and Q 32 are turned ON and finally Q 13 and Q 33 are turned ON.
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