ISL6140, ISL6150 are negative voltage hot plug controllers produced by Intersil company. The controller allows the circuit board to be safely inserted and removed from a live backplane. By controlling the gate voltage of an external N-channel pass transistor, the inrush current is limited to a programmable value. If the input voltage is less than the undervoltage threshold or greater than the overvoltage threshold, the pass transistor will be turned off. A programmable electronic circuit breaker protects the system against shorts. The PWRGD signal of ISL6140 is low-level and the PWRGD signal of ISL6150 is high-level.
The ISL6140 (active‑low) and ISL6150 (active‑high) are 8‑pin negative‑voltage hot‑plug controllers that limit inrush current and protect against over‑current, over‑voltage, and under‑voltage conditions. They use an external N‑channel pass FET and provide a PWRGD output to indicate power‑good status.
The document includes pin descriptions, absolute maximum ratings, typical operating conditions, timing diagrams, and application notes for selecting component values such as sense resistors, voltage‑divider networks, and gate‑drive components.