View max5902 datasheet:

19-1988; Rev 0; 3/01 +72V SOT23 Simple Swapper Hot-Swap Controllers General Description Features The MAX5902/MAX5903 are SOT23 hot-swap con- ¦ Wide +9V to +72V Operation trollers that allow a circuit card to be safely hot plugged ¦ Requires No External Sense Resistor into a live backplane without causing a glitch on the power-supply rail. These devices operate from +9V to ¦ Drives External P-Channel MOSFET +72V and provide the simplest hot-swap solution by ¦ Limits Inrush Current eliminating all external components except the external P-channel MOSFET. ¦ Circuit Breaker Function The MAX5902/MAX5903 limit the inrush current to the ¦ Less than 2mA Quiescent Current load and provide a circuit breaker function for overcur- rent protection. During startup the circuit break