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The ISL6140 is an 8-pin, negative voltage hot plug controller that allows 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. The pass transistor is turned off if the input voltage is less than the undervoltage threshold, or greater than the overvoltage threshold. A programmable electronic circuit breaker protects the system against shorts.
The active low PWRGD signal can be used to directly enable a power module (with a low enable input)
The ISL6150 is the same part, but with an active high PWRGD signal.
•Low Side External NFET Switch •Operates from -10V to -80V (-100V absolute max rating) or +10V to +80V (+100V absolute max rating) •Programmable Inrush Current •Programmable Electronic Circuit Breaker (Over-Current shutdown) •Programmable Overvoltage Protection •Programmable Undervoltage Lockout •Power Good Control Output -PWRGD Active High: (H Version) ISL6150 -PWRGD active Low: (L Version) ISL6140 •Lead-Free Available as an Option
ISL6150IBZ Typical Application
•VoIP (Voice over Internet Protocol) Servers •Telecom systems at -48V •Negative Power Supply Control •+24V Wireless Base Station Power
