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TPS92200D1EVM: DIM input impedance

Part Number: TPS92200D1EVM

What is the analog input impedance at the DIM input?

To set for example the DIM voltage with a fix resistor voltage divider from 12V supply like 10k to 1k or with 1M and 100k would it be the same?

Or do we need very low input impedance, for example to use a bandgap reference?

My application is to control the current of UVtC LED. With a high impedance voltage divider a NTC could be use to lower the LED current in case of higher LED temperature.

Thanks for any comments.