General Description

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.

特性 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)

? 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

Applications

? General-purpose hot board insertion

? High-voltage, high-side electronic circuit breaker

? +12V/+24V/+48V Distributed Power Systems

? +24V/+48V Industrial/Alarm Systems

? Telecom Systems

? Medical Systems