The ISL6140 is an 8 Ld, 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.

Features

• 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 (overcurrent shutdown)

• Programmable Overvoltage Protection

• Programmable Undervoltage Lockout

• Power Good Control Output

- PWRGD Active High: (H Version) ISL6150

- PWRGD active Low: (L Version) ISL6140

• Pb-free available (RoHS compliant)

Applications

• VoIP (Voice over Internet Protocol) Servers

• Telecom systems at -48V

• Negative Power Supply Control

• +24V Wireless Base Station Power