| 摘要 |
PURPOSE: A thermal shut down circuit is provided to measure a chip temperature by arranging a temperature sensing transistor near to a power transistor and covering the power transistor by a metal. CONSTITUTION: At least one or more temperature sensing transistors(11) are installed in a semiconductor integrated circuit so as to be adjacent to thermal sources(31-36) such as power transistors. The temperature sensing transistors are installed corresponding to the power transistors. Alternatively, the temperature sensing transistors are installed between adjacent power transistors. The temperature sensing transistors are covered by a metal line which is contact with the thermal source.
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