LTC4251-2IS6#TRPBF - Negative Voltage Hot Swap Controller

The LTC4251-2IS6#TRPBF is a robust negative voltage Hot Swap controller designed by Linear Technology to enable safe board insertion and extraction from a live backplane. This controller is specifically crafted to manage negative supply voltages, making it ideal for telecommunications and data networking equipment where negative voltage rails are common. The device operates over a wide voltage range and is housed in a compact TSOT-23 package, offering both space efficiency and performance reliability.

Key Features:

• Wide Operating Voltage Range: The LTC4251-2IS6#TRPBF can handle a broad range of negative voltages, typically from -9V to -80V, which makes it versatile for various applications.
• Adjustable Current Limit: The controller allows for precise setting of the overcurrent limit threshold via an external resistor, enabling tailored protection for different circuit conditions.
• Gate Drive for External N-Channel MOSFET: The device provides a gate drive for an external N-Channel MOSFET, which acts as the main power control element in the Hot Swap function.
• Fast Response to Fault Conditions: It features quick reaction times to overcurrent and overvoltage conditions, ensuring the protection of both the board and the backplane during fault states.
• Automatic Retry or Latch Off: Upon detecting a fault, the LTC4251-2IS6#TRPBF can be configured to either attempt a power-on retry or to latch off, based on the requirements of the application.
• Under Voltage Lockout (UVLO): This safety feature prevents the controller from turning on the MOSFET until the input voltage reaches a safe operating level.
• Thermal Shutdown: The device includes a thermal shutdown mechanism to protect against overheating conditions.

Applications:

• Telecommunications Equipment
• Data Networking Hardware
• Negative Voltage Power Distribution Systems
• Industrial Systems

The LTC4251-2IS6#TRPBF is a critical component for systems that require reliable power management during insertion and removal processes. Its compact form factor, combined with its robust set of features, ensures that it can provide seamless integration and protection in sophisticated electronic systems.