RS31311AR

Hot Swap Controllers Overview

The RS31311AR is a single-channel hot-swap controller manufactured by Reed Semiconductor Corp. Designed for PCI and PCI-X applications, this integrated circuit manages power sequencing and protection in surface-mount configurations. It operates within a supply voltage range of 2.97V to 16.5V and supports a maximum output current of 5A. The device features an internal switch and programmable current limiting capabilities. It is housed in a compact 10-VSON (3x3) package with exposed pad, suitable for space-constrained designs. The component is rated for industrial operating temperatures ranging from -40°C to +125°C.

Hot Swap Controllers Feature Summary

• Integrates a high-side power switch with dedicated control logic for hot-swap operations
• Provides programmable current limiting to protect downstream circuits from overcurrent conditions
• Supports standard interface protocols including PCI and PCI-X bus architectures

Hot Swap Controllers Applications

• PCI bus card insertion management
• PCI-X system backplane power sequencing
• Hot-pluggable peripheral interface protection

Hot Swap Controllers Procurement Notes

Verify the specific manufacturer part number RS31311AR against official Reed Semiconductor Corp documentation to confirm pinout compatibility and electrical specifications. Ensure that the selected packaging option matches the required assembly process. Cross-reference ordering suffixes if available to identify tape and reel versus cut tape variations. Confirm that the supplier source provides genuine components with traceability records to avoid counterfeit risks during procurement.

Hot Swap Controllers Selection Notes

Select this component when designing systems requiring controlled power ramp-up for PCI or PCI-X slots. Consider the 10-VSON package size for board space optimization. Evaluate the 5A current limit against the load requirements of the connected peripherals. Verify that the operating temperature range meets the environmental constraints of the final application. Ensure the supply voltage range aligns with the system's available power rails.

Hot Swap Controllers Part Context

This device belongs to the family of hot-swap controllers designed for managing power delivery during live insertion events. It addresses the need for surge current limiting and fault protection in expansion slot architectures. The integration of the switch and control logic reduces external component count compared to discrete solutions. It serves as a critical interface between the system power supply and the expansion card.

Hot Swap Controllers Replacement Considerations

Consult official substitution guides from Reed Semiconductor Corp for verified alternatives. Generic equivalents may not match the specific control logic or package dimensions. Verify functional compatibility before replacing the original component in existing designs.