The 34653 is a highly integrated -48 V hot swap controller with an internal Power MOSFET. It provides the means to safely install and remove boards from live -48 V backplanes without having to power down the entire system. It regulates the inrush current, from the supply to the load’s filter capacitor, to a user-programmable limit, allowing the system to safely stabilize. A disable function allows the user to disable the 34653 manually or through a microprocessor and safely disconnect the load from the main power line.

Features

? Integrated Power MOSFET and Control IC in a Small Outline Package

? Input Voltage Operation Range from -39 V to -74 V

? Programmable Overcurrent Limit with Auto Retry

? Programmable Charging Current Limit Independent of Load Capacitor

? Start-Up and Retry Delay Timer

? Overvoltage and Undervoltage Detection

? Active High and Low Power Good Output Signals

? Thermal Shutdown

? Pb-Free Packaging Designated by Suffix Code EF