Àû²©¡¤(¼¯ÍÅ)ÓÐÏÞ¹«Ë¾¹ÙÍø

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