MIC2596

MIC2596/2597 Micrel MIC2596/2597 Dual Channel Negative Voltage Hot Swap Controllers Final Information General Description The MIC2596 and MIC2597 are dual channel negative voltage hot swap controllers designed to facilitate safe PC board insertion into and removal from live backplanes. To minimize external components, each channel of the MIC2596/MIC2597 has an integrated high voltage power MOSFET. Built-in current sensing in each channel provides inrush current limiting, by regulating the channel’s output current to a usersettable maximum. Current sensing also provides programwww.DataSheet4U.com mable overcurrent and open-load detection. A channel will be turned off if it experiences overload or no-load conditions lasting longer than programmable intervals. Foldback current limiting holds power dissipation of the internal MOSFETs at safe levels during overloads, and very fast shutdown response to faults ensures protection for both system power supplies and the load. The MIC2596 will automatically attempt to restart into an overcurrent fault until the fault is cleared, while the MIC2597 will latch the output in the off state until it is reset by external action. A logic-compatible signal is provided on each channel to indicate overcurrent or undercurrent fault conditions. Features Allows safe hot-swap in –48V systems Operates to –70V Programmable inrush current limiting Two thermally isolated channels Overcurrent fault sensing and protection Nuisance tri...