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LM5175: Use LM5175 with variable output voltage / output current

Part Number: LM5175


I want to use LM5175 to charge a battery at constant voltage and current

I also need to be able to set the output voltage and output current variable.

Is it possible to use an external operationnal amplifier to adapt the regulation at the level I need and to go directly to COMP pin.

That means NOT using internal LM5175 amplifier with 0.8V threshold

Thanks in advance for your answer