LTC4263IDE#PBF - Negative Voltage Hot Swap Controller

The LTC4263IDE#PBF is an advanced Hot Swap controller from Linear Technology designed to enable safe board insertion and removal from a live backplane. Utilizing a negative voltage control scheme, this device is specifically tailored for systems operating with negative supply voltages ranging from -9V to -80V. The LTC4263IDE#PBF ensures electronic circuit protection by limiting inrush current during plug-in events, thus preventing glitches on the supply rail, damage to connectors, and disruption to other loads.

One of the key features of the LTC4263IDE#PBF is its integrated charge pump, which drives an external N-channel MOSFET. This setup eliminates the need for an additional positive voltage, streamlining the design for systems with only a negative supply. The charge pump allows for the MOSFET to be controlled smoothly, providing a soft-start capability that minimizes inrush current and ensures a controlled ramp-up of the output voltage.

The LTC4263IDE#PBF incorporates a current limit threshold that is adjustable via an external resistor. This flexibility allows designers to set the maximum current according to the specific needs of their application. Furthermore, the device features a foldback current limit, which helps to reduce the power dissipation in the MOSFET during overcurrent conditions.

Additional protection features of the LTC4263IDE#PBF include overcurrent protection, overvoltage protection, undervoltage lockout, and thermal shutdown. These comprehensive safeguards ensure that the electronic system is protected under a wide range of fault conditions. The device also provides a FAULT output that signals when a fault condition occurs, enabling system monitoring and diagnostics.

Available in a 12-lead DFN package, the LTC4263IDE#PBF is designed for robust operation in harsh environments. Its performance and small footprint make it an ideal choice for a variety of applications, including telecom systems, industrial controls, and server farms, where negative supply voltages are common and reliable Hot Swap functionality is essential.

Overall, the LTC4263IDE#PBF by Linear Technology represents a sophisticated solution for negative voltage Hot Swap applications, offering designers a combination of performance, flexibility, and protection in a compact package.