RS31317BR

Hot Swap Controllers Overview

The RS31317BR is a single-channel hot swap controller and electronic fuse from Reed Semiconductor Corp., housed in a 26-LGA package. It operates within an input voltage range of 4.5V to 16V and supports a maximum continuous current of 15A. The device integrates a low-resistance pass MOSFET with an internal resistance of 2.7mΩ. Key features include adjustable current limiting from 2A to 15A and an adjustable over-current blanking timer, providing precise protection for motherboard and industrial applications.

Hot Swap Controllers Feature Summary

• Integrates a low-loss pass MOSFET for efficient power delivery
• Provides adjustable current limiting to protect downstream loads
• Includes configurable over-current blanking timer for transient tolerance
• Offers comprehensive hot swap protection for system safety

Hot Swap Controllers Applications

• Motherboard power distribution systems
• Industrial control system protection
• PCIe and PCI slot power management

Hot Swap Controllers Procurement Notes

Verify the specific suffix 'BR' against the manufacturer's official datasheet to confirm pinout compatibility and thermal specifications. Ensure the ordering information matches the exact 26-LGA package variant required for your PCB layout. Cross-reference the part number with authorized distributors to confirm active status and availability before finalizing procurement plans.

Hot Swap Controllers Selection Notes

Select this component when designing circuits requiring robust hot swap capabilities and precise current regulation within a 4.5V to 16V input window. The integrated MOSFET eliminates the need for external switching elements, simplifying the bill of materials. Consider the adjustable current limit range to match the specific load requirements of the protected circuitry while ensuring adequate headroom for startup transients.

Hot Swap Controllers Part Context

This device belongs to Reed Semiconductor's family of electronic fuses and hot swap controllers designed for high-reliability applications. It serves as a critical protection element in power management IC portfolios, bridging the gap between standard fuses and complex digital power controllers by offering analog simplicity with digital-like adjustability.

Hot Swap Controllers Replacement Considerations

Consult official substitution guides for compatible eFuse devices with similar voltage and current ratings. Verify that alternative parts support the same 26-LGA footprint or require adapter solutions. Ensure replacement components maintain equivalent hot swap timing characteristics and current limit accuracy for system stability.

Hot Swap Controllers FAQ

What is the internal resistance of the integrated pass MOSFET?

The integrated pass MOSFET has an internal resistance of 2.7mΩ.

Is the current limit fixed or adjustable?

The current limit is adjustable, allowing configuration from 2A to 15A.

Does the device support over-current blanking?

Yes, it features an adjustable over-current blanking timer to handle load transients.