| 摘要 |
PURPOSE: An internal power supply voltage generator is provided to have a rapid recovery time and a large driving capacity by realizing comparison circuits having MOS transistors of different channel rates. CONSTITUTION: An internal power supply voltage generator comprises a first comparison circuit(100), a second comparison circuit(200) and an output drive circuit(300). The first comparison circuit(100) compares an internal power supply voltage(IVCC) on an output terminal(400) with a reference voltage(Vref) to output a first comparison signal(COM1) as a comparison result. The second comparison circuit(200) compares the internal power supply voltage(IVCC) with the reference voltage(Vref) to output a second comparison signal(COM2) as a comparison result. The output driving circuit(300) is connected between an external power supply voltage and the output terminal(400), and drives the output terminal(400) according to the second comparison signal(COM2). The MOS transistors(110,120,130,140,150) of the first comparison circuit(100) have more large channel rates than those of the second comparison circuit(200).
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