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2022-09-24 23:30:48
LTC1421 - Hot Swap Controller
Features Allows insertion and removal from a live backplane safety bureau System reset and power control Good output Programmable electronic circuit breaker
Connect the input detection board to insert or remove the undervoltage lockout power-on reset input
The LTC®1421/LTC1421-2.5 Thermal SwapTM controller allows boards to be safely inserted and removed from a live backplane. Using external N-channel transistors, the supply voltage to the board can be ramped up by a programmable rate. Two high-side switch drivers control N-channel gates for supply voltages ranging from 3V to 12V. A programmable electronic circuit breaker protects the shorts. Warning signal that a circuit breaker has tripped, a power source has failed or a switch driver has been turned off. The reset output can be used to generate a system reset when a power cycle or fault occurs. These two connection inputs can be used to interleave connector pins to indicate board insertion or removal. A power-on reset input that can be used to cycle power to the board or clear circuit breakers.