LTC4222 Hot Swap Controller

The LTC4222 Hot Swap Controller enables two independent power paths to be safely inserted or removed from a live backplane without causing system disruption. This integrated circuit from Analog Devices (formerly Linear Technology) is ideal for high-availability systems like servers, routers, and industrial automation equipment. Key features include adjustable analog foldback current limiting, a programmable soft-start circuit to control dI/dt of inrush currents, and an I2C-compatible interface for real-time monitoring of voltage, current, and fault status. The device supports a wide input voltage range and operates with external N-channel MOSFETs for efficient power path control. Its robust design ensures protection against short circuits, overcurrent, and undervoltage conditions, making it a reliable choice for critical power management applications. Choose the LTC4222 for its proven reliability, precise control, and comprehensive monitoring capabilities in demanding environments.