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LT3470 - Negative output regulation by MOSFET

Category: Hardware
Product Number: LT3470A

Dear,
I need help with my design. I used LT3470 in next connection:

I need regulate negative output voltage from LT3470 by GATE of MOSFET. Voltage on GATE is 0 to -11V reference to GND.
For 0V, MOSFET is open and Output votage is minimum by FB resistor.
For -11V, MOSFET is closed and Output voltage is maximum.
Is it regular connection and idea?

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