General Description

The MAX5910/MAX5917 are fully integrated hot-swap switches for positive supply rails. These devices allow the safe insertion and removal of circuit cards into live backplanes or ports without causing glitches on the backplane 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 IFAULT output. The MAX5910/MAX5917 operate over a +10V to +65V input voltage range. They are designed to permit hot plugging of an internet appliance such as an IP phone but are not limited to that application.

Features

♦ Provides Safe Hot Swap for +10V to +65V Power Supplies

♦ IEEE 802.3af Compliant (MAX5917A)

♦ Startup into 500µF Load (MAX5917A)

♦ 280mA Current Limit for MAX5910

♦ 567mA Current Limit for MAX5917A

♦ 420mA Current Limit for MAX5917B

♦ Zero-Current Load Detection

♦ Integrated 2.2Ω Power FET

♦ Status Output Reports Fault Conditions

♦ Internal Switch-Protection Circuitry

♦ Built-In Thermal Shutdown

Applications

    IP Phones

    Power-Over-LAN

    Power-Over-MDI

    Remote Power Distribution

    Network Routers

    Network Switches

    Internet Appliances