Features: `Allows Safe Board Insertion and Removal from a Live Backplane`Controls Load Voltages from 1V to 6V`No Gate Components Required`Adjustable Current Limit with Circuit Breaker`Limits Peak Fault Current in 1s`No External Timing Capacitor Required`Adjustable Supply Voltage Power-Up Rate`Gate...
LTC4224-1: Features: `Allows Safe Board Insertion and Removal from a Live Backplane`Controls Load Voltages from 1V to 6V`No Gate Components Required`Adjustable Current Limit with Circuit Breaker`Limits Peak Fa...
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The LTC4224-1 Dual Low Voltage Hot Swap™ controller allows a board to be safely inserted and removed from a live backplane. It controls two supplies with external Nchannel MOSFETs and operates with one supply as low as 1V provided the other supply is 2.7V or greater.
The LTC4224-1 can ramp up the supplies in any order and at adjustable ramp rates. To minimize the number of external components and PCB area, the gate capacitor is optional, all timing delays are generated internally, and the ON pins have integrated pull-up currents. Protection against overcurrent faults of LTC4224-1 is provided by a fastacting current limit and timed circuit breakers. A FAULT pinsignals overcurrent faults.
The LTC4224-1 remains off after a fault, while the LTC4224-2 automatically tries to apply power again after a four second cool-down period.