General Description

The MAX5913A/MAX5914A are quadruple hot-swap controllers. The MAX5913A/MAX5914A independently control four external n-channel switches to hot-swap system loads from a single VCC supply line. The devices allow the safe insertion and removal of power devices from live network ports. The operating supply voltage range is between +35V and +72V. The devices are intended for applications in Power-Over-Media-Dependent Interface (MDI), but are not limited to such usage.

Features

♦ Wide Operating Input Voltage Range: +35V to +72V

♦ IEEE® 802.3af Compatible

♦ Four Independent Power Switch Controllers

♦ Open-Circuit Detector

♦ On-Board Charge Pumps to Drive External n-Channel FETs

♦ Current Sense with External Resistor

♦ Foldback Current Limiting

♦ +32V Input Undervoltage Lockout

♦ On-Chip +12V, 100mA Voltage Relay Drivers

Applications

    Power-Over-LAN

    Power-Over-MDI

    IP Phone Switches/Routers

    Telecom Line Cards

    Network Switches/Routers

    Midspan Power-Over-MDI