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LTC4233 - 10A Guaranteed SOA Hot Swap Controller

The LTC®4233 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. The MOSFET Safe Operating Area is production tested and guaranteed for the stresses in Hot Swap applications.

The LTC4233 provides separate inrush current control and an 11% accurate 11.2A current limit with output dependent foldback. The current limit threshold can be adjusted dynamically using the ISET 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 20A pin compatible version see LTC4234.

Features Allows Safe Board Insertion into a Live Backplane Small Footprint 10mΩ MOSFET Including RSENSE Safe Operating Area Guaranteed at 41W, 30ms Wide Operating Voltage Range: 2.9V to 15V Adjustable, 11% 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 2.5% Accurate Undervoltage and Overvoltage Protection Available in 38-Lead (5mm × 9mm) QFN Package Pin Compatible with LTC4234 Typical Application

Applications High Availability Servers Solid State Drives Industrial Network Routers and Switches Packaging

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