发明名称 |
POWER SUPPLY DETECTION CIRCUITRY AND METHOD |
摘要 |
A circuit and method are disclosed for monitoring the voltage level of an unregulated power supply. The circuit includes a voltage reference circuit for generating a first reference voltage signal and a trim circuit which generates a trimmed reference voltage signal based upon the first reference voltage signal. A comparator compares the unregulated power supply voltage to the trimmed reference voltage signal and asserts an output signal based upon the comparison. The output signal is fed back as an input to the trim circuit so that the trim circuit provides a hysteresis effect.
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申请公布号 |
US2002158673(A1) |
申请公布日期 |
2002.10.31 |
申请号 |
US20010846524 |
申请日期 |
2001.04.30 |
申请人 |
STMICROELECTRONICS, INC. |
发明人 |
MCCLURE DAVID C.;YIN RONG |
分类号 |
G01R19/165;(IPC1-7):H03K5/153 |
主分类号 |
G01R19/165 |
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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