Datasheet Summary
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Quad IEEE 802.3af Power over Ethernet Controller with AC Disconnect
Features
DESCRIPTIO
- Controls Four Independent
- 48V Powered Ethernet Ports
- Each LTC4259A-1 Port Includes:
- IEEE 802®.3af pliant PD Detection and Classification
- Output Current Limit with Foldback
- Short-Circuit Protection with Fast Gate Pull-Down
- PD Disconnect Using AC or DC Sensing
- Improved AC Disconnect
- Improved UVLO
- Operates Autonomously or Controlled by I2CTM Serial Interface
- 4-Bit Programmable Digital Address Allows Control of Up to 64 Ports
- Current and Duty Cycle Limits Protect External FETs
- IMPROVED UVLO
- Available in a 36-pin SSOP package.
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