Microchip Technology MIC2587R-2YM

Description
The MIC2587 and MIC2587R are single-channel positive voltage hot swap controllers designed for safe insertion and removal of boards in live backplane systems. They use external N-channel power MOSFETs for inrush current and output voltage slew rate control. Overcurrent fault protection is provided by programmable analog fold-back current-limit circuitry with a programmable overcurrent filter. These protection circuits limit the power dissipation of the external MOSFET to ensure it remains within its safe operating area during fault conditions.
The MIC2587 features 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 features a circuit breaker function that automatically attempts to restart power after a load current fault at a low duty cycle to prevent MOSFET overheating.
Both devices provide either an active-HIGH or active-LOW "Power-is-Good" signal to indicate that the output load voltage is within tolerance.

Features
Pin-for-pin functional equivalent to the LT1641 (MIC2587)
Operates from 10V to 80V with 100V ABS MAX operation
Programmable current limit with analog foldback
Active current regulation minimizes inrush current
Electronic circuit breaker for overcurrent fault protection:
Output latch off (MIC2587)
Output auto-retry (MIC2587R)
Fast responding circuit breaker (< 1µs)
Programmable input undervoltage lockout
Open-drain "Power-is-Good" output for enabling DC/DC converters:
Active-HIGH: MIC2587-1/MIC2587R-1
Active-LOW: MIC2587-2/MIC2587R-2
Fault Reporting

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