¡El MIC2580 is a hot-swap controller that provides for safe and orderly insertion and removal of PCI based adapter cards from a PCI hot-plug compliant system backplane or CompactPCI™ system. ¡El MIC2580 incorporates a circuit breaker function that protects all four supplies (+12V, +5V, +3.3V, and –12V) upon an overcurrent fault condition. Current foldback limiting pre- vents large transient currents caused by plugging adapter cards into live backplanes, such as in a CompactPCI system. A programmable slew-rate control limits high inrush currents to all loads that occur when power is applied to large capaci- tive loads. Voltage supervisory functions for all four power supplies are provided by “power good” (/PWRGD) and “overcurrent fault” (/FAULT) diagnostic outputs. Power good and overcurrent fault include deglitch filters to prevent nuisance tripping. Power good is active when all four supplies are within tolerance. Fault (/FAULT) goes active upon overcurrent or overtemperature conditions. ¡El on-off control input (/ON) is used to cycle power to the adapter card.