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 follows OUT1
x = L, 200mV *
24-pin TSSOP
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 volt-
age 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 com-
ponents 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 (< 1祍)
"  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
Micrel, Inc. " 2180 Fortune Drive " San Jose, CA 95131 " USA " tel + 1 (408) 944-0800 " fax + 1 (408) 474-1000 " http://www.micrel.com