LTC1644IGN#PBF - Hot Swap Controller from Linear Technology

The LTC1644IGN#PBF is a sophisticated hot swap controller designed by Linear Technology, now part of Analog Devices, to manage the safe insertion and removal of circuit boards from live backplanes. This component is especially crucial in systems where uptime is critical and maintenance or upgrades need to be performed without powering down the entire system. The LTC1644IGN#PBF is housed in a narrow SSOP-16 package, providing a compact solution for space-constrained applications.

Key Features

• Integrated MOSFET Gate Driver: The LTC1644IGN#PBF features an integrated gate driver for an external N-channel MOSFET, allowing for precise control over the inrush current during hot swapping.
• Adjustable Current Limit: Users can set the current limit threshold through an external resistor, tailoring the device's performance to specific application requirements.
• Overcurrent Protection: The device offers robust protection against overcurrent conditions, helping to prevent damage to the electronic components on the inserted board.
• Undervoltage Lockout: The LTC1644IGN#PBF includes an undervoltage lockout feature that ensures the controller remains off until the supply voltage reaches a safe operating level.
• Power Good Output: A "power good" output signal is provided, which can be used to enable downstream converters once the board has been safely powered up.

Applications

The LTC1644IGN#PBF is ideal for a variety of applications that require hot swapping capabilities, including:

• RAID Systems
• Network Routers and Switches
• Servers
• Telecommunications Equipment
• Industrial Systems

Reliability and Performance

The LTC1644IGN#PBF is built to Linear Technology's high standards, ensuring reliable operation in challenging environments. With features like programmable soft-start to limit inrush current and electronic circuit breaker functionality, this hot swap controller is engineered to provide a smooth and safe power-up sequence for electronic boards.

Whether upgrading a server or maintaining a telecom switch, the LTC1644IGN#PBF helps to streamline the process by enabling quick and safe board swaps, minimizing system downtime, and protecting valuable hardware investments.