LTC1642AIGN Hot Swap Controller from Linear Technology

The LTC1642AIGN is a sophisticated and feature-rich hot swap controller designed by Linear Technology to ensure safe board insertion and removal from a live backplane. This integrated circuit is housed in a narrow 16-lead SSOP package, making it a compact solution for managing electronic circuit power connections in high-availability systems.

With the ability to control supply voltages ranging from 2.7V to 16.5V, the LTC1642AIGN is versatile and can be used in a wide array of applications, from telecom equipment to data servers and storage systems. The device offers an adjustable current limit, which allows designers to tailor the maximum current the circuit can draw, preventing damage to the board and power supply due to overcurrent conditions.

One of the key features of the LTC1642AIGN is its programmable timer for the circuit breaker function. This timer ensures that if an overcurrent condition persists, the power to the board will be disconnected, thus protecting the system from prolonged faults. The timer's duration can be set according to system requirements, providing additional flexibility in its application.

The hot swap controller also includes under-voltage and over-voltage lockout protections, which prevent the power from being applied to the board if the supply voltage is outside the predefined safe operating range. This feature is critical for avoiding damage caused by voltage surges or sags that can occur in unstable power environments.

Furthermore, the LTC1642AIGN offers a soft-start capability that controls the inrush current at power-up, reducing the stress on components and extending their operational lifetime. This feature is particularly important in systems where multiple boards are inserted or removed frequently.

For system monitoring and diagnostics, the LTC1642AIGN provides a fault output signal. This signal can be used to trigger alarms or initiate system shutdown procedures in the event of a detected fault, enhancing the overall reliability and safety of the system.

In summary, the LTC1642AIGN from Linear Technology is a highly reliable and flexible solution for power management in hot swap applications. Its comprehensive protection features and programmable parameters make it an ideal choice for designers looking to enhance system uptime and safety in their electronic products.