MIC2587R-2YM

Hot Swap Controllers Overview

The MIC2587R-2YM is a single-channel positive voltage hot-swap controller designed for safe board insertion and removal in systems with live backplanes. It operates from +10V to +80V, with a 100V absolute maximum rating. The device controls external N-channel MOSFETs to manage inrush current and output slew rate. Key electrical parameters include an operating supply voltage range of 10V to 80V, a supply current of 2mA, and an industrial temperature range of -40°C to +85°C. It features programmable analog foldback current limiting and fast fault response.

Hot Swap Controllers Feature Summary

• Provides active current regulation to minimize inrush current during board insertion
• Features programmable analog foldback current limit circuitry for overcurrent protection
• Includes auto-retry functionality that automatically attempts to restore power after a fault clears
• Offers open-drain Power-is-Good output signaling for system status monitoring

Hot Swap Controllers Applications

• General-purpose hot board insertion in server or telecom chassis
• +12V/+24V/+48V distributed power systems
• +24V/+48V industrial and alarm systems
• Telecom equipment requiring high-side electronic circuit breaking

Hot Swap Controllers Procurement Notes

Verify the specific suffix 'R' indicates auto-retry behavior and '-2' denotes active-low Power-Good signaling against the official datasheet. Confirm package integrity for the SOIC-8 form factor. Ensure compatibility with external N-channel MOSFET selection based on the specified voltage and current ratings. Check for any recent manufacturing changes or PCN notices affecting pinout or material composition.

Hot Swap Controllers Selection Notes

Select this component when automatic recovery from overcurrent faults is required, distinguishing it from the latch-off MIC2587 variant. The active-low Power-Good signal suits systems where low logic levels indicate valid power. Ensure the external MOSFET can handle the peak currents defined by the programmable limit settings. Verify that the input voltage range aligns with the system's bus voltage requirements.

Hot Swap Controllers Part Context

This part belongs to the MIC2587 family of hot-swap controllers manufactured by Microchip Technology, formerly Micrel. It serves as a functional equivalent to legacy parts like the LT1641. The series provides robust protection for high-voltage applications, enabling safe maintenance and expansion of powered systems without shutting down the entire backplane infrastructure.

Hot Swap Controllers Replacement Considerations

• MIC2587-2YM (Note: Latch-off instead of Auto-retry)

Hot Swap Controllers FAQ

What is the difference between MIC2587 and MIC2587R?

The MIC2587R features auto-retry functionality, which automatically attempts to turn on the load after an overcurrent fault clears. The standard MIC2587 latches off and requires a manual reset.

What does the '-2' suffix indicate in MIC2587R-2YM?

The '-2' suffix indicates that the Power-is-Good output is active-low, meaning it pulls low when the output voltage is within regulation.