LTC1921IMS8 - Dual, Hot Swap™ Controller

The LTC1921IMS8, from Linear Technology, is a sophisticated dual-channel Hot Swap™ controller designed to enable safe board insertion and removal from a live backplane. This compact, integrated solution is crucial for systems where uptime and reliability are critical, by managing the inrush current during plug-in, thus avoiding damage to connectors, backplane traces, and power supply components.

Key Features:

• Independent Control: Each channel of the LTC1921IMS8 operates independently, allowing for precise management of two separate supply voltages ranging from 2.7V to 16.5V.
• Adjustable Inrush Current: Users can adjust the inrush current limit via external components, providing flexibility to accommodate a range of board requirements and ensuring compatibility with various system designs.
• Circuit Protection: The device includes overcurrent protection and foldback current limiting, enhancing the safety and longevity of the system by preventing damage due to excessive currents.
• Status Indicators: Integrated status outputs provide real-time feedback on the operation of each channel, which is essential for system monitoring and diagnostics.
• Compact Packaging: Housed in an MSOP-8 package, the LTC1921IMS8 saves valuable board space, making it ideal for dense, space-constrained applications.

Applications:

The LTC1921IMS8 is well-suited for a variety of applications, particularly in systems requiring high-availability or redundant power supplies. These include:

• RAID systems
• Network servers and routers
• Industrial systems
• Telecommunications equipment

Conclusion:

With its robust feature set and dual-channel configuration, the LTC1921IMS8 from Linear Technology provides an efficient and reliable solution for power management in critical systems. By safeguarding against electrical mishaps during hot-swapping, this controller ensures system integrity and helps maintain continuous operation, making it an invaluable component in high-performance and high-availability environments.