Thanks for the reply. So the correct approach is simply to calculate the maximum resistance that leaves 7V at the input with the minimum supply voltage and the maximum current being drawn by the IC? -n. On Mar 31, 2007, at 4:27 PM, Vasile Surducan wrote: > On 3/31/07, James Nick Sears wrote: >> Hello all, >> >> I am working on a regulator based upon the Maxim MAX5061. A couple >> of things are unclear to me in the datasheet: >> >> In the schematic on p13 of the datasheet (http://datasheets.maxim- >> ic.com/en/ds/MAX5060-MAX5061.pdf) there is a resistor R13 in series >> with the power input to the controller. I don't see any reference to >> this resistor anywhere else in the datasheet and am not clear as to >> what value it should be. > > It must be computed. The internal stabiliser has 5V and supply voltage > could be any from 7V to 24V. At 24V you need to help the MAX5061 > package by decreasing power dissipation on an outside resistor. You > need to know the IN current for computing it and max supply voltage > you may have. > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist