MIC2584/MIC2585 Dual-Channel Hot Swap Controller/Sequencer - Micrel - #1

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March 2005 1 MIC2584/2585 MIC2584/2585 Micrel Ordering Information Part Number Output Sequencing Fast Circuit Breaker Package Standard Pb-Free Threshold MIC2584-xBTS MIC2584-xYTS N/A x = J, 100mV 16-pin TSSOP x = K, 150mV * MIC2585-1xBTS MIC2585-1xYTS OUT2 folloxw s = OUT1 L, 200mV MIC2585-2xBTS MIC2585-2xYTS OUT1 follows OUT2 x = M, Off * * Contact Micrel for availability. MIC2584/MIC2585 Dual-Channel Hot Swap Controller/Sequencer 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 NChannel 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 (< 1ìs) • Two sequenced output mode selections (MIC2585 only) • Ä250mV 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 Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com