LTC4221IGN - Dual Hot Swap Controller from Linear Technology

The LTC4221IGN is a sophisticated dual Hot Swap controller designed by Linear Technology to manage the safe insertion and removal of printed circuit boards from a live backplane. This integrated circuit provides independent control of two supply voltages ranging from 2.7V to 16.5V, making it a versatile solution for a variety of applications.

Key Features:

• Independent Control: The LTC4221IGN allows for the independent control of two power supply rails, which is essential for systems that require different voltage levels or sequencing.
• Adjustable Overcurrent Protection: The device includes overcurrent protection that can be adjusted using external resistors, offering flexibility to match the requirements of the load.
• Power Good Outputs: This controller provides "power good" outputs, which can be used to signal a microcontroller or other systems that the power supplies are stable and within the acceptable range.
• UV/OV Protection: Under-voltage and over-voltage protection ensures that the connected devices are protected from voltage fluctuations that could potentially cause damage.
• SOIC Packaging: The LTC4221IGN is available in a narrow 16-lead SOIC package, which is suitable for space-constrained applications.
• Glitch Filter: The onboard glitch filter avoids nuisance trips due to transient voltages, ensuring stable operation under varying conditions.
• High Side Drive: The controller operates on the high side of the power path, providing a straightforward implementation that does not interfere with the ground plane.

Applications:

The LTC4221IGN is ideal for a variety of applications, including:

• Redundant Power Systems
• Industrial/Telecommunications
• Network Servers and Storage Systems
• High Availability Systems

Conclusion:

The LTC4221IGN from Linear Technology is a highly reliable and versatile dual Hot Swap controller that ensures the protection and management of electronic systems during hot insertion and removal. Its comprehensive feature set makes it an excellent choice for engineers looking for a robust power management solution.