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MIC2594

Negative Voltage Hot-Swap Controller

Status: Not Recommended for new designs

Features:

  • MIC2588: Pin-for-pin functional equivalent to the LT1640/LT1640A/LT4250
  • Provides safe insertion and removal from live -48V (nominal) backplanes
  • Operates from -19V to -80V
  • Electronic circuit breaker function
  • Built-in 400µs "nuisance-trip" delay (tFLT)
  • Regulated maximum output current into faults
  • Programmable inrush current limiting
  • Fast response to short circuit conditions (< 1µs)
  • Programmable undervoltage and overvoltage lockouts (MIC2588-xBM)
  • Programmable UVLO hysteresis (MIC2594-xBM)
  • Fault reporting: Active-HIGH (-1BM) and Active-LOW (-2BM) Power-Good output signal
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Overview
Documents
Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

The MIC2588 and the MIC2594 are single-channel, negative-voltage hot swap controllers designed to address the need for safe insertion and removal of circuit boards into "live" high-voltage system backplanes, while using very few external components. The MIC2588 and the MIC2594 are each available in an 8-pin SOIC package and work in conjunction with an external N-Channel MOSFET for which the gate drive is controlled to provide inrush current limiting and output voltage slew-rate control. Overcurrent fault protection is also provided and includes a programmable overcurrent threshold. During an output overload condition, a constant-current regulation loop is engaged to ensure that the system power supply maintains regulation. If a fault condition exceeds a built-in 400µs nuisance-trip delay, the MIC2588 and the MIC2594 will latch the circuit breaker's output off and will remain in the off state until reset by cycling either the UV/OFF pin or the power to the IC. A master Power-Good signal is provided to indicate that the output voltage of the soft-start circuit is within its valid output range. This signal can be used to enable one or more DC-DC converter modules.

Additional Features
    • MIC2588: Pin-for-pin functional equivalent to the LT1640/LT1640A/LT4250
    • Provides safe insertion and removal from live -48V (nominal) backplanes
    • Operates from -19V to -80V
    • Electronic circuit breaker function
    • Built-in 400µs "nuisance-trip" delay (tFLT)
    • Regulated maximum output current into faults
    • Programmable inrush current limiting
    • Fast response to short circuit conditions (< 1µs)
    • Programmable undervoltage and overvoltage lockouts (MIC2588-xBM)
    • Programmable UVLO hysteresis (MIC2594-xBM)
    • Fault reporting: Active-HIGH (-1BM) and Active-LOW (-2BM) Power-Good output signal
Parametrics
Name
Value
Product type
High Voltage (>16V)
Latch off
Yes
# of PWRGD
1 Active High
Θja (C/W)
152

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MIC2594-1YM-TR
0.075000
0.250000
8
SOIC
3.90mm(.150in)
NiPdAu
e4
MIC2594-2YM
0.075000
0.163265
8
SOIC
3.90mm(.150in)
NiPdAu
e4
MIC2594-2YM-TR
0.075000
0.250000
8
SOIC
3.90mm(.150in)
NiPdAu
e4
MIC2594-1YM
0.075000
0.163265
8
SOIC
3.90mm(.150in)
NiPdAu
e4
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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