The LT3089 provides several monitoring and protection functions. Current limit can be programmed with a single resistor. Monitor outputs provide a current output proportional to temperature (1µA/°C) and output current (200µA/A), allowing easy ground-based measurement. The current monitor can be used to compensate for cable drops. The LT3089’s internal protection circuitry includes reverse input protection, reverse-current protection, internal current limiting, and thermal shutdown with hysteresis.