• 简体中文
• English

LTC4217 - 2A Integrated Hot Swap Controller

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 also provided. For a 5A pin compatible version, see LTC4232.

Features Small Footprint 33mΩ MOSFET with RSENSE Wide Operating Voltage Range: 2.9V to 26.5V Adjustable, 5% Accurate Current Limit Current and Temperature Monitor Outputs Overtemperature Protection Adjustable Current Limit Timer Before Fault Power Good and Fault Outputs Adjustable Inrush Current Control 2% Accurate Undervoltage and Overvoltage Protection Pin Compatible with LTC4232 (DFN Package Only) Available in 20-Lead TSSOP and 16-Lead 5mm × 3mm DFN Packages Typical Application

Applications RAID Systems, Solid State Drives Server I/O Cards Industrial Packaging

Demo Boards