LTC4213CDDB#TRPBF

Series:	*
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Electronic Circuit Breaker
Applications:	--
Mounting Type:	Surface Mount
Package / Case:	8-WFDFN Exposed Pad
Supplier Device Package:	8-DFN (3x2)
Base Part Number:	LTC4213

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Specialized ICs

The LTC4213CDDB#TRPBF (hereinafter referred to as the ‘LTC4213’) is a specialized integrated circuit (IC) manufactured by Linear Technology Corporation. It is used as a Hot Swap switch that is specially designed to control the power on and off of in-rush currents during electronic system power up and power down scenarios. This IC offers a high level of efficiency, reliability, and safety when used in Hot Swap designs, and can be easily integrated into existing designs with minimal effort.

Application Field

The LTC4213 has a wide variety of application fields. It is commonly used in telecommunications and networking applications, industrial control systems, medical equipment, consumer electronics and robotics. The LTC4213 is specially designed for hot-swapping applications, allowing them to be hot-plugged and unplugged from the system with minimal disruption to the system. It also provides protection from damage to system components due to inrush currents, power spikes, and incorrect voltage levels when electronic components are plugged in or removed.

Working Principle

The LTC4213 employs several features to provide hot-swapping protection. The first one is a delay module that provides an adjustable delay time, ranging from 8 milliseconds to 8 seconds, based on an external voltage input. This delay time allows the system to detect any device insertion or removal and initiate a power-on or power-down process. In this way, the system can ensure safety of all components that are plugged and/or unplugged.The second feature is a built-in Undervoltage Lockout (UVLO), which prevents the system from powering up when the voltage is below a certain preset value. This feature helps to prevent damage due to sudden voltage drops. The third feature is a set of active-low switches that allow system designers to control when the power is allowed to be applied to a system component. This allows for more control and flexibility in Hot Swap designs.Finally, the LTC4213 also contains an over-current protection circuit that shuts down the supply if the current exceeds a preset level, preventing damage to system components. This circuit has adjustable trip points, allowing for adjustable current limits. This ensures that the system only operates when the current is within a safe range.In conclusion, the LTC4213 is a specialized integrated circuit that is designed specifically for Hot Swap applications. Its features make it perfect for powering up and powering down electronic components with minimal disruption and maximum protection. Its adjustable delay and current limit settings ensure safety and reliability in any Hot Swap configuration.

References

[1] Linear Technology. “LTC4213 Hot Swap Controller.” Datasheet. Linear Technology, 2021.[2] Tang, Hui. “Understanding Hot-Swap Controllers (Part 1).” Power Systems Design, 22 October 2008.[3] Tang, Hui. “Understanding Hot-Swap Controllers (Part 2).” Power Systems Design, 24 October 2008.[4] System Solutions Group. “Hot Swap Design Considerations.” Application Note, System Solutions Group, 2021.

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