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Ideas for a clamp circuit in LDO

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yen

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Hi,
Maybe we can use mirror pmos'size and use resistor to transfer the voltage.
Use comparator's output to control pmos's gate voltage. Do you have any simple methods? If you know , please teach me . Thanks.
Do you know line driver of DAC and common mode feedback? If you has any information or data, can you let me know? I want to understand. Thanks.
 

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