LTC4259A-1

NOT RECOMMENDED FOR NEW DESIGNS

Quad IEEE 802.3af Power over Ethernet Controller with AC Disconnect

Data Sheet Product Selection Table
Part Models
4
1ku List Price
Starting From $8.30
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Part Details

  • Controls Four Independent – 48V Powered Ethernet Ports
  • Each LTC4259A-1 Port Includes:
    – IEEE 802®.3af Compliant 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 I2C™ Serial Interface
  • 4-Bit Programmable Digital Address Allows Control of Up to 64 Ports
  • Current and Duty Cycle Limits Protect External FETs
  • IMPROVED UVLO
LTC4259A-1
Quad IEEE 802.3af Power over Ethernet Controller with AC Disconnect
Complete 4-Port Powered Ethernet Power Source Product Package 1
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Documentation

Data Sheet 1

Reliability Data 2

Design Note 2

Data Sheet

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
I²C Isolators 1
LTM2883
PRODUCTION SPI/Digital or I2C μModule Isolator with Adjustable ±12.5V and 5V Regulated Power
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