The LT4180 solves the problem of providing tight load regulation over long, highly resistive cables without requiring an additional pair of remote sense wires. This Virtual Remote Sense™device continuously interrogates the line impedance and corrects the power supply output voltage via its feedback loop to maintain a steady voltage at the load regardless of current changes.The LT4180 is a full-featured controller with 5mA optoisolator sink capability, under/overvoltage lockout, soft-start and a ±1% internal voltage reference. The Virtual Remote Sense feature set includes user-programmable dither frequency and optional spread spectrum dither.The LT4180 works with any topology and type of isolated or nonisolated power supply, including DC/DC converters and adjustable linear regulators.The LT4180 is available in a 24-pin, SSOP package.Applications12V High Intensity Lamps28V Industrial SystemsHigh Power (>40 Watts) CAT5 Cable SystemsWiring Drop Cancellation for Notebook Computer Battery ChargingAC and DC AdaptorsWell-Logging and Other Remote InstrumentationSurveillance Equipment