MIC2587

The MIC2587 and MIC2587R are single-channel positive voltage hot swap controllers designed to provide safe insertion and removal of boards for systems that require live (always-powered) backplanes. These devices use few external components and act as controllers for external N-channel power MOSFET devices to provide inrush current control and output voltage slew rate control. Overcurrent fault protection is provided via programmable analog foldback current limit circuitry equipped with a programmable overcurrent filter. These protection circuits combine to limit the power dissipation of the external MOSFET to insure that the MOSFET is in its SOA during fault conditions. The MIC2587 provides a circuit breaker function that latches the output MOSFET off if the load current exceeds the current limit threshold for the duration of the programmable timer. The MIC2587R provides a circuit breaker function that automatically attempts to restart power after a load current fault at a low duty cycle to prevent the MOSFET from overheating. Each device provides either an active-HIGH (-1BM) or an active-LOW (-2BM) "Power-is-Good" signal to indicate that the output load voltage is within tolerance.

Features
  • MIC2587: Pin-for-pin functional equivalent to the LT1641
  • Operates from +10V to +80V with 100V ABS MAX operation
  • Industrial temperature specifications at VCC = +24V and VCC = +48V
  • Programmable current limit with analog foldback
  • Active current regulation minimizes inrush current
  • Electronic circuit breaker for overcurrent fault protection Output latch off (MIC2587) or Output auto-retry (MIC2587R)
  • Output latch off (MIC2587) or
  • Output auto-retry (MIC2587R)
  • Fast responding circuit breaker (< 2µs) to short circuit loads
  • Programmable input undervoltage lockout
  • Fault Reporting: Open-drain "Power-is-Good" output for enabling DC/DC converter(s) Active-HIGH: MIC2587-1/MIC2587R-1 Active-LOW: MIC2587-2/MIC2587R-2
  • Active-HIGH: MIC2587-1/MIC2587R-1
  • Active-LOW: MIC2587-2/MIC2587R-2
Parameter
Parameter Name Value Value
Product type High Voltage (>16V) High Voltage (>16V)
Latch off Yes Yes
# of PWRGD 1 Active Low 1 Active Low
Foldback Current Limit Yes Yes
Θja (C/W) 160 160
Documents
MIC2587/MIC2587R - Single-Channel, Positive High-Voltage Hot Swap ControllerData Sheets11/05/2015972KB
Micrel AN 108 - Universal Serial Bus Power ManagementAppNote10/02/2015125KB
Micrel AN 21 - Dual Current-Limiting Switch for USB ApplicationsAppNote10/01/201536KB
Ordering Information
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
MIC2587-1YM8SOIC-40C to +85CTUBE**********
MIC2587-1YM-TR8SOIC-40C to +85CT/R**********
MIC2587-2YM8SOIC-40C to +85CTUBE**********
MIC2587R-1YM8SOIC-40C to +85CTUBE**********
MIC2587R-1YM-TR8SOIC-40C to +85CT/R3.743.122.842.742.71
MIC2587R-2YM8SOIC-40C to +85CTUBE**********
Similar Devices
ProductPrice5K
MCP18480$4.42
MIC2085
MIC2310
MIC2342
MIC2582$2.34
MIC2583$2.74
MIC2583R$2.74
MIC2584$4.47
MIC2585-2
MIC2587$2.71
MIC2588
MIC2590
MIC2591B
MIC2593
MIC2594
MIC2595
RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
MIC2587-1YM0.0750000.1632658SOIC3.90mm(.150in)NiPdAue4
MIC2587-1YM-TR0.0750000.2500008SOIC3.90mm(.150in)NiPdAue4
MIC2587-2YM0.0750000.1632658SOIC3.90mm(.150in)NiPdAue4
MIC2587-2YM-TR0.0750000.2500008SOIC3.90mm(.150in)NiPdAue4
MIC2587R-1YM0.0750000.1632658SOIC3.90mm(.150in)NiPdAue4
MIC2587R-1YM-TR0.0750000.2500008SOIC3.90mm(.150in)NiPdAue4
MIC2587R-2YM0.0750000.1632658SOIC3.90mm(.150in)NiPdAue4
MIC2587R-2YM-TR0.0750000.2500008SOIC3.90mm(.150in)NiPdAue4
MIC2587/MIC2587R - Single-Channel, Positive High-Voltage Hot Swap Controller MIC2587
Micrel AN 108 MIC2595
Micrel AN 21 MIC2595