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LTC4210-3 and -4 - Hot Swap Controller in 6-Lead SOT-23 Package

The LTC4210-3/LTC4210-4 is a 6-pin SOT-23 Hot Swap controller that allows a board to be safely inserted and removed from a live backplane. An internal high side switch driver controls the GATE of an external N-channel MOSFET for a supply voltage ranging from 2.7V to 7V. The LTC4210 provides the initial timing cycle and allows the GATE to be ramped up at an adjustable rate.

The LTC4210 features a fast current limit loop providing active current limiting together with a circuit breaker timer. The signal at the ON pin turns the part on and off and is also used for the reset function.

The LTC4210-3 retries on overcurrent fault and the LTC4210-4 latches off on an overcurrent fault.

Features Allows Safe Board Insertion and Removal from a Live Backplane Adjustable Analog Current Limit with Circuit Breaker Fast Response Limits Peak Fault Current Automatic Retry or Latch Off On Current Fault Adjustable Supply Voltage Power-Up Rate High Side Drive for External MOSFET Switch Controls Supply Voltages from 2.7V to 7V Undervoltage Lockout Adjustable Overvoltage Protection Low Profile (1mm) SOT-23 (ThinSOTTM) Package Typical Application

Applications Hot Board Insertion Electronic Circuit Breaker Industrial High Side Switch/Circuit Breaker Packaging

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