| 摘要 |
<p>An overvoltage protection circuit includes an output transistor (109) connected between a first power supply (Vbat) and an output terminal (106), a load (112) connected to the output terminal, a dynamic clamping circuit (111) for controlling a voltage difference between the first power supply and the output terminal, and a clamp selection switch (110) electrically connected between the dynamic clamping circuit (111) and the output terminal (106), and a conductive condition of the clamp selection switch (110) is determined according to a comparison between a reference voltage (GND) and a voltage of the output terminal.
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