General Description
The MAX5911/MAX5912 are fully integrated hot-swap switches for negative supply rails. These devices allow the safe insertion and removal of circuit cards into live backplanes or ports without causing problematic glitches on the negative power-supply rail. They also monitor various circuit parameters and disconnect the load if a fault condition occurs, alerting the host with a logic-level FAULT output. The MAX5911/MAX5912 operate over a voltage range of -16V to -65V and are designed to permit hot plugging of an IP phone into a hub, but are not limited to that operation.

Features
♦ Provides Safe Hot Swap for -16V to -65V Power Supplies
♦ 280mA Current Limit for MAX5911
♦ 415mA Current Limit for MAX5912
♦ Zero-Current Load Disconnect
♦ Integrated Power FET
♦ Status Output Reports Fault Condition
♦ Internal Switch-Protection Circuitry
♦ Built-In Thermal Shutdown
♦ DGND Can Vary Up to ±5V with Respect to AGND

Applications
    IP Phones
    Network Routers
    Network Switches
    Internet Appliances
    Power-Over-LAN