Current-Limit Switch Is Digitally Programmable
Current-limit switches are virtually ubiquitous in system controls. They provide a safe means for regulating the current delivered to a load circuit. The switches allow the load current to increase to a programmed limit but no higher. This application note illustrates the implementation of a digitally programmable current-limit switch using MAX890L a current-limited, high-side P-channel switch and MAX5160 digital potentiometer
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http://www.maxim-ic.com/appnotes.cfm/appnote_number/298/ln/en
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