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U U
FEATURES
s Allows Safe Board Insertion and Removal from a Live – 48V Backplane
s Operates from –10V to – 80V s Programmable Inrush Current s Allows 50mA of Reverse Drain Pin Current s Programmable Electronic Circuit Breaker s Programmable Overvoltage Protection s Programmable Undervoltage Lockout s Power Good Control Output
U APPLICATIO S
s Central Office Switching s – 48V Distributed Power Systems s Negative Power Supply Control
LT1640AL/LT1640AH
Negative Voltage Hot Swap Controller
DESCRIPTIO
The LT®1640AL/LT1640AH are 8-pin, negative voltage Hot SwapTM controllers that allow a board to be safely inserted and removed from a live backplane. Inrush current is limited to a programmable value by controlling the gate voltage of an external N-channel pass transistor.