LTC1421IG-2.5#PBF - Hot Swap Controller

The LTC1421IG-2.5#PBF is a sophisticated hot swap controller from Linear Technology, designed to enable safe board insertion and removal from a live backplane. This integrated circuit (IC) is specifically engineered to control the power supply to plug-in boards, preventing glitches on the power bus, connector damage, and arcing, which can be caused by uncontrolled inrush currents when boards are inserted or removed.

With a fixed operating voltage of 2.5V, the LTC1421IG-2.5#PBF is tailored to manage low voltage applications effectively. It offers a controlled turn-on of the board's power supply, which is essential in systems that are sensitive to voltage and current spikes, such as servers, telecom equipment, and data storage systems.

Key Features:

• Adjustable Current Limit: This feature allows for precise control over the maximum inrush current, ensuring compatibility with a wide range of power supplies and backplane designs.
• Overcurrent Protection: The device provides robust protection against overcurrent conditions, safeguarding both the hot swap controller and the system it is part of.
• Undervoltage Lockout: The LTC1421IG-2.5#PBF incorporates an undervoltage lockout feature that ensures the controller remains off until the supply voltage reaches a safe operating level.
• High Side Drive: Its high side drive capability allows for the use of N-channel MOSFETs, which typically have lower on-resistance than P-channel MOSFETs, leading to reduced power dissipation and improved efficiency.
• Thermal Protection: The device includes thermal shutdown protection to prevent damage from overheating conditions.
• Soft Start Capability: The soft start function mitigates inrush current impact, contributing to the longevity of the system's components.

The LTC1421IG-2.5#PBF comes in a rugged 16-lead SSOP package with a lead-free finish, suitable for industrial environments. Its operating temperature range of -40°C to 85°C ensures reliable performance across a spectrum of temperature conditions.

This hot swap controller is an ideal solution for engineers looking to enhance system reliability and protect against the risks associated with hot swapping circuit boards. With its comprehensive suite of protective features and robust design, the LTC1421IG-2.5#PBF from Linear Technology stands out as a high-quality component for critical applications where uptime and safety are paramount.