LTC4261CGN-2#PBF - Negative Voltage Hot Swap Controller

The LTC4261CGN-2#PBF is a sophisticated negative voltage hot swap controller from Linear Technology designed to enable safe board insertion and extraction for systems with negative supply voltages. This component is particularly useful in telecommunications and data communications equipment, where it helps to prevent damage to connectors, backplanes, and power supply components that can occur with the sudden connection or disconnection of power.

Encased in a compact 16-lead SSOP package, the LTC4261CGN-2#PBF offers a feature-rich solution for power management. It operates over a wide voltage range of -9V to -80V, making it suitable for various applications. The device integrates a charge pump to control the external N-channel gate, providing a seamless transition of power without the need for an additional external power supply.

One of the key features of this hot swap controller is its adjustable current limit, which can be set via a single external resistor. This allows for precise control of the inrush current, ensuring compatibility with different types of loads and systems. Additionally, the LTC4261CGN-2#PBF includes a circuit breaker function with an adjustable response time, offering another layer of protection by disconnecting the load in the event of overcurrent conditions.

The LTC4261CGN-2#PBF also features a multi-function timer that can be used to control the duration of certain events, such as fault conditions. In the case of an overcurrent or power fault, the timer will ensure a safe retry interval before attempting to reconnect the load. The device also provides status indication through a FAULT output, which can be used to signal a system controller or to drive an LED for visual status alerts.

Overall, the LTC4261CGN-2#PBF is an essential component for managing power distribution safely and effectively in negative voltage environments. Its robust feature set ensures that systems remain protected and operational, even under adverse conditions.