SC4250LISTRT

Hot Swap Controllers Overview

The SC4250LISTRT is a negative voltage hot swap controller manufactured by Semtech Corporation, designed to facilitate the safe insertion of line cards into live backplanes. It operates within an SOIC-8 package and supports adjustable thresholds for inrush current programming. The device features closed-loop operation to limit maximum current under short circuit conditions and includes a built-in timing circuit to prevent false shutdowns. It latches off during abnormal conditions, requiring power recycling to resume operation.

Hot Swap Controllers Feature Summary

• Enables safe insertion of line cards into live backplanes via negative voltage hot swap control
• Provides programmable inrush current management with closed-loop maximum current limiting
• Integrates a timing circuit to prevent false shutdowns and monitors drain voltage for MOSFET safety

Hot Swap Controllers Applications

• Live backplane insertion systems
• Line card protection circuits
• Negative voltage power supply management

Hot Swap Controllers Procurement Notes

Verify the specific suffix 'LIS' against official Semtech documentation to confirm pinout or thermal variations compared to standard variants. Ensure compatibility with negative voltage rail requirements. Confirm RoHS compliance status through the manufacturer's latest datasheet before integration.

Hot Swap Controllers Selection Notes

Select this component for applications requiring robust protection during the insertion of hardware modules into active systems. The integrated timing and current limiting features reduce the need for external protection components. Verify that the system operates within the negative voltage domain supported by this controller.

Hot Swap Controllers Part Context

This part belongs to Semtech's SC4250 family of hot swap controllers. These devices are engineered for power management applications where equipment must be added or removed without powering down the entire system. The family focuses on protecting both the host backplane and the inserted card from electrical faults during connection.

Hot Swap Controllers Replacement Considerations

Consult Semtech technical support for verified cross-reference part numbers. Do not assume functional equivalence with other hot swap controllers without verifying pinout and electrical specifications.