General Description
The MIC2584 and MIC2585 are dual-channel positive voltage hot swap controllers designed to facilitate the safe insertion of boards into live system backplanes. The MIC2584 and MIC2585 are available in 16-pin and 24-pin TSSOP packages, respectively. Using a few external discrete components and by controlling the gate drives of external N-Channel MOSFET devices, the MIC2584/85 provides inrush current limiting and output voltage slew rate control in harsh, critical power supply environments. Additionally, the MIC2585 provides output turn-on sequencing and output tracking during turn-on and turn-off. In combination, the devices’ many features provide a simplified, robust solution for many network applications to meet the power sequencing and protection requirements of multiple-voltage logic systems.

Features
• 1.0V 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
• Dual-level overcurrent fault sensing eliminates false tripping
• Fast response to short circuit conditions (< 1µs)
• Two sequenced output mode selections (MIC2585 only)
• ∆250mV supply tracking mode during turn-on/turn-off (MIC2585 only)
• Overvoltage and undervoltage output monitoring (Overvoltage for MIC2585 only)
• Undervoltage lockout protection
• /FAULT status output
• Power-On Reset and Power-Good status output (Power-Good for MIC2585 only)

Applications
• RAID systems
• Network servers
• Base stations
• Network switches
• Hot-board insertion