LTC4252-1IMS - Negative Voltage Hot Swap Controller

The LTC4252-1IMS from Linear Technology is a sophisticated negative voltage hot swap controller designed to enable safe board insertion and removal from a live backplane. This component is particularly suitable for systems with negative supply voltages ranging from -48V, commonly found in telecom and datacom applications.

Key Features:

• Integrated Charge Pump: The device includes an onboard charge pump that eliminates the need for an external power source to drive the gate of an external N-channel MOSFET, simplifying the design and reducing component count.
• Adjustable Current Limit: The LTC4252-1IMS allows for precise setting of the overcurrent threshold, ensuring protection against excessive current draw which can lead to system damage.
• Fast Response Time: It features a fast response to fault conditions, quickly disconnecting the load in the event of overcurrent, overvoltage, or undervoltage conditions, thereby protecting both the board and the backplane.
• Undervoltage and Overvoltage Lockout: The controller ensures that the system operates within safe voltage levels by disabling the external MOSFET when the input voltage goes out of the predefined safe range.
• Multi-Function Timer: An onboard timer provides control over the fault timeout period, which can be adjusted based on system requirements, improving flexibility in various applications.

Applications:

The LTC4252-1IMS is ideal for a range of applications that require reliable power management and protection. These include:

• Telecommunications Equipment
• Datacom Infrastructure
• Network Servers and Storage Systems
• Industrial Systems

Product Specifications:

Overall, the LTC4252-1IMS from Linear Technology is a robust and reliable solution for managing power in negative supply voltage environments, ensuring system safety and integrity during hot-swap events.