The LTC4280CUFD#PBF is a state-of-the-art Hot Swap controller designed by Linear Technology to enable safe board insertion and removal from a live backplane. This intelligent electronic component allows a board to be safely hot-swapped, preventing both the board and the backplane from being damaged by inrush currents or voltage spikes that can occur during insertion or removal.

Key Features

• Integrated MOSFET: The device incorporates an N-channel MOSFET that can control supply voltages from 2.9V to 15V, providing a robust solution for various applications.
• Adjustable Current Limit: Users can set the overcurrent limit threshold via an external resistor, ensuring protection tailored to specific circuit requirements.
• Foldback Current Limiting: This feature helps to reduce the power dissipation in the MOSFET during overcurrent conditions.
• Multi-Function Timer: A programmable timer serves multiple functions, including controlling the length of time the MOSFET remains off after a fault and setting the circuit breaker delay.
• Power Good Output: The LTC4280CUFD#PBF provides a Power Good output signal, which can be used to enable downstream converters once the supply has been safely established.

Applications

The LTC4280CUFD#PBF is versatile and can be employed in a wide range of applications, including:

• Server and Telecom Hot Swap Systems
• Network Routers and Switches
• Industrial Systems
• High Availability Systems

Product Specifications

The LTC4280CUFD#PBF comes in a 20-lead QFN package and operates over an industrial temperature range. Its compact form factor and robust design make it ideal for space-constrained and harsh environments, ensuring reliability and performance in critical applications.

Conclusion

With its advanced features and robust design, the LTC4280CUFD#PBF from Linear Technology is a premier choice for designers looking to implement Hot Swap capabilities in their systems. Its ability to manage inrush currents, protect against overcurrent conditions, and signal system stability makes it an invaluable component for maintaining system integrity and uptime.