发明名称 |
Over-voltage protection circuit |
摘要 |
An over-voltage protection circuit for protecting an integrated circuit includes an external power supply terminal to which a power supply voltage is supplied, a grounding terminal to which a ground voltage is supplied, and an internal power supply terminal for supplying the power supply voltage to the integrated circuit. A voltage dividing unit is connected between the external power supply terminal and the grounding terminal for dividing a voltage supplied from the external power supply terminal, and has a Zener diode and a first resistor connected in series. A signal generating unit is connected between the external power supply terminal and the grounding terminal for outputting the power supply voltage or the ground voltage, and a switching unit is connected between the internal power supply terminal and the signal generating unit for performing a switching operation.
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申请公布号 |
US2003214769(A1) |
申请公布日期 |
2003.11.20 |
申请号 |
US20030401751 |
申请日期 |
2003.03.31 |
申请人 |
NISHIKAWA MUTSUO;UEYANAGI KATSUMICHI;UEMATSU KATSUYUKI;KITAMURA AKIO |
发明人 |
NISHIKAWA MUTSUO;UEYANAGI KATSUMICHI;UEMATSU KATSUYUKI;KITAMURA AKIO |
分类号 |
H01L27/04;G05F1/10;H01L21/822;H01L21/8238;H01L23/62;H01L27/02;H01L27/06;H01L27/092;H02H3/20;H02H9/00;(IPC1-7):H02H9/00 |
主分类号 |
H01L27/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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