Hello,
I'm looking for a very small footprint circuit to act as a current limiter when supplying a resistive heater from a stable, secure +36Vdc / 6A supply. I don't need over- or under-voltage protection, just the current limiter and an active low enable (HVEN*) input. I already have a separate FET circuit that works but does not have current limiting functionality. Instead of adding a sense resistor and Op-Amp type feedback circuit to my FET design, I'm thinking the MAX17523 could do it all, saving me footprint. My questions are:
1. Can I effectively disable the over-voltage feature on the MAX17523? (e.g. by setting the theoretical over-voltage trigger value to well above 36Vdc)
2. What would be voltage drop across the MAX17523 (Vin - Vout) at Vin=36V, Iout=1A? Is this just the output load current multiplied by the Ron value of both internal FETs?
3. Are there any power dissipation issues in the MAX17523 that I am missing when running at +36dc/1A?
Thanks for any help on this device.
David.
