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TPS7A20: Could you tell me the principles of an LDO?

Part Number: TPS7A20

Tool/software:

Hello teams

Could you tell me the principles of an LDO?

An LDO has a built-in FET. The output of the error amplifier via a feedback circuit is connected to the gate terminal of the FET.

As you know, the FET controls the current value between the drain and source.

Is it possible to change the output voltage of an LDO even though the FET only controls the current?

best regards