The LT1641-1IS8#PBF is a 8-pin Hot Swap 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 an N-channel gate for supply voltages ranging from 9 to 80V. The chips feature a programmable analog fold back current limit circuit. If the chips remain in current limit for more than a programmable time, the N-channel pass transistor is either latched off. The PWRGD output indicates when the output voltage, sensed by the FB pin, is within tolerance. The ON pin provides programmable undervoltage lockout.
Allows safe board insertion and removal from a live backplane
(EN)
