The LT4180 is a full-featured controller with 5mA opto-isolator current sink capability, undervoltage/overvoltage lockout, soft-start and a ±1% internal voltage reference. Virtual remote sensing feature settings include user-programmable dither frequency and optional spread spectrum dither. The LT4180 solves the problem of providing tight load regulation over long, high impedance cables without the need for an additional pair of remote sensing wires. This Virtual Remote SenseTM device continuously detects line impedance and corrects the power supply output voltage through its feedback loop to maintain a stable voltage at the load, independent of current changes. The LT4180 can be used with any conversion topology and all types of isolated or non-isolated power supplies, including DC/DC converters and adjustable linear regulators. LT4180 - Virtual Remote Sense Controller Features Precision load voltage regulation over high resistance cables (no remote sense wiring required) Compatible with isolated and non-isolated supplies ±1% internal voltage reference 5mA current sink capability Soft correction reduces turn-on transients Undervoltage and overvoltage protection Pin-programmable dither frequency Optional spread spectrum dither Wide VIN range: 3.1V to 50V 24-lead SSOP package
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