LTC4217

LTC4217 2A Integrated Hot Swap Controller Features nn Small Footprint nn 33mΩ MOSFET with RSENSE nn Wide Operating Voltage Range: 2.9V to 26.5V nn Adjustable, 5% Accurate Current Limit nn Current and Temperature Monitor Outputs nn Overtemperature Protection nn Adjustable Current Limit Timer Before Fault nn Power Good and Fault Outputs nn Adjustable Inrush Current Control nn 2% Accurate Undervoltage and Overvoltage Protection nn Pin Compatible with LTC4232 (DFN Package Only) nn Available in 20-Lead TSSOP and 16-Lead 5mm × 3mm DFN Packages Applications nn RAID Systems, Solid State Drives nn Server I/O Cards nn Industrial Description The LTC®4217 is an integrated solution for Hot Swap applications that allows a board to be safely inserted and removed from a live backplane. The part integrates a Hot Swap controller, power MOSFET and current sense resistor in a single package for small form factor applications. A dedicated 12V version (LTC4217-12) contains preset 12V specific thresholds, while the standard LTC4217 allows adjustable thresholds. The LTC4217 provides separate inrush current control and a 5% accurate 2A current limit with foldback current limiting. The current limit threshold can be adjusted dynamically using an external pin. Additional features include a current monitor output that amplifies the sense resistor voltage for ground referenced current sensing and a MOSFET temperature monitor output. Thermal limit, overvoltage, undervoltage and power good monitoring are...