Features: ·Single Channel Positive NFET Driver·Programmable Undervoltage and Overvoltage Protection·Foldback Current Limit·Adjustable Current Limit Time-Out·Latch Off or Automatic Retry on Current Fault·Driver for SCR Crowbar on Overvoltage·Programmable Reset Timer·Reference Output with Uncommitte...
LTC1642: Features: ·Single Channel Positive NFET Driver·Programmable Undervoltage and Overvoltage Protection·Foldback Current Limit·Adjustable Current Limit Time-Out·Latch Off or Automatic Retry on Current F...
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The LTC®1642 is a 16-pin Hot SwapTM controller that allows a board to be safely inserted and removed from a live backplane. Using an external N-channel pass transistor, the board supply voltage can be ramped up at a programmable rate. A high side switch driver controls the N-channel gate for supply voltages ranging from 2.97V to 16.5V.
The SENSE pin allows foldback limiting of the load current, with circuit breaker action after a programmable delay time. The delay allows the part to power-up in current limit. The CRWBR output can be used to trigger an SCR for crowbar load protection after a programmable delay if the input supply exceeds a programmable voltage. The RESET output can be used to generate a system reset with programmable delay when the supply voltage falls below a programmable voltage. The ON pin can be used to cycle the board power. The LTC1642 is available in the 16-pin SSOP package.