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General Description

The MIC2582 and MIC2583 are single channel positive voltage hot swap controllers designed to allow the safe insertion of boards into live system backplanes. The MIC2582 and MIC2583 are available in 8-pin SOIC and 16-pin QSOP packages, respectively. Using a few external components and by controlling the gate drive of an external N-Channel MOSFET device, the MIC2582/83 provide inrush current limiting and output voltage slew rate control in harsh, critical power supply environments. Additionally, a circuit breaker function will latch the output MOSFET off if the current limit threshold is exceeded for a determined period. The MIC2583R option includes an auto-restart function upon detecting an over current condition.

Features

? MIC2582: Pin-for-pin functional equivalent to the LTC1422

? 2.3V to 13.2V supply voltage operation

? Surge voltage protection up to 20V

? Current regulation limits inrush current regardless of load capacitance

? Programmable inrush current limiting

? Electronic circuit breaker

? Optional dual-level overcurrent threshold detects excessive load faults

? Fast response to short circuit conditions (<1μs)

? Programmable output under-voltage detection

? Under-voltage Lockout (UVLO) protection

? Auto-restart function (MIC2583R)

? Power-On Reset and Power-Good status outputs (Power-Good for the MIC2583 and MIC2583R only)

? /FAULT status output (MIC2583 and MIC2583R)

Applications

? RAID systems

? Base stations

? PC board hot swap insertion and removal

? +12V backplanes

? Network switches