Product Overview: LT1640HIS8#PBF

The LT1640HIS8#PBF is a high-performance, negative voltage hot swap controller from Linear Technology, designed to enable safe board insertion and removal from a live backplane. This integrated circuit (IC) allows a board to be safely hot-swapped - that is, inserted or removed without the need to power down the system. It is housed in an 8-lead narrow SOIC package, providing a compact solution for space-constrained applications.

Key Features

• Negative Voltage Operation: The LT1640HIS8#PBF is specifically designed for systems that operate with negative supply voltages, making it ideal for telecom and datacom applications where negative bus voltages are common.
• Adjustable Current Limit: The device features an adjustable current limit function that protects the system from overcurrent conditions during the hot-swap event. This helps to prevent damage to the board, the connector, and the backplane.
• Circuit Breaker Function: This hot swap controller includes a circuit breaker function that latches off the external N-channel MOSFET when an overcurrent condition is detected, providing robust protection for the system.
• High Temperature Operation: The "HIS" designation in the part number indicates that this device is designed to operate in industrial and military temperature ranges, ensuring reliable performance under extreme conditions.
• Under-Voltage and Over-Voltage Protection: The LT1640HIS8#PBF provides under-voltage and over-voltage protection, which ensures that the system is protected from voltage transients that can occur during hot-swap events.
• Gate Drive for External N-Channel MOSFET: The controller includes a gate drive for an external N-channel MOSFET, enabling efficient power management and control during insertion and removal of the board.

Applications

The LT1640HIS8#PBF is suitable for a wide range of applications, including but not limited to:

• Telecommunications Infrastructure
• Datacom Equipment
• Negative Voltage Power Distribution Systems
• Industrial and Military Systems

With its robust feature set and high reliability, the LT1640HIS8#PBF from Linear Technology is an excellent choice for designers looking to implement hot-swap capabilities in systems with negative supply voltages.