LTC9101-3

RECOMMENDED FOR NEW DESIGNS

8/16-Port IEEE 802.3at PoE PSE Digital Controller with Power Management and LED Control

Data Sheet (Rev. 0) Product Selection Table
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Overview

  • Fully Compliant IEEE 802.3at (Type 2) PSE
  • Up to 16 PSE Ports
  • Fully Autonomous System-Level Power Manager
    • No Host Processor Required
  • System-Level PoE LED Controller
    • Per-Port Status and Fault LEDs
    • Supply Overload LED with Hysteresis
  • eFlash-Programmable System Settings
    • Port- and System-Level Power Thresholds
    • LED Mapping and Blink Rate
    • Port Power Priority
  • ECC-Protected eFlash and Data RAMs
  • Very High Reliability Multipoint PD Detection
  • Lowest Per-Port Power Path Dissipation
    • 100mΩ Sense Resistance
    • 57mΩ or Lower MOSFET RDS(ON)
  • Chipset Isolation Eliminates Isolated 3.3V Supply
  • Available in a 64-Lead 7mm × 11mm (LTC9103) and 24-Lead 4mm × 4mm (LTC9101-3) QFN Packages
LTC9101-3
8/16-Port IEEE 802.3at PoE PSE Digital Controller with Power Management and LED Control
LTC9101-3/LTC9103 Application Circuit LTC9101-3/LTC9103 Pin Configuration LTC9101-3/LTC9103 Pin Configuration
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Documentation

Data Sheet 1

User Guide 1

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Evaluation Kits

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schematic 1
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EVAL-LTC9101-3

Evaluating the LTC9101-3/LTC9103 16-Port, IEEE 802.3at PSE Controller with Power Management and LED Control

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Features and Benefits

  • 16 Port IEEE 802.3at-compliant PSE
  • Autonomous Power Management with flash configuration
  • Serial LED driver for Port LEDs

Product Details

The EVAL-LTC9101-3 is an Ethernet Alliance certified, 16-channel IEEE 802.3at compliant power sourcing equipment (PSE) with autonomous power management and serial LED driver for port LEDs. The EVAL-LTC9101-3 includes the EVAL-LTC9101-3-AZ daughter card, the EVAL-LTC9101-3-MB-AZ motherboard, and features the LTC9101-3 and LTC9103 PSE platform chipset.

In the EVAL-LTC9101-3, a single LTC9101-3 digital controller interfaces with up to two LTC9103, 8-channel, analog controllers for 16 power channels total. Up to sixteen IEEE 802.3af/at/bt powered devices (PDs) can be connected to the EVAL-LTC9101-3 and powered from this system using a single power supply.

The LTC9101-3 and LTC9103 use a proprietary isolated data interface allowing the LTC9101-3 to share the same logic supply as the host controller and eliminate the need for an additional isolated 3.3 V supply. The EVAL-LTC9101-3 operates completely autonomously without a host controller, including flash configuration for power management and port LEDs. Port Status and Fault LEDs quickly show PoE status for up to sixteen ports, including fault codes, driven by the LTC9101-3 using a serial LED driver. A Supply Overload LED warns if system power usage is near the power budget and indicates if port power is denied or revoked.

Please see the User Guide for the full description.

eval board
schematic 3
schematic 4
EVAL-LTC9101-3

Evaluating the LTC9101-3/LTC9103 16-Port, IEEE 802.3at PSE Controller with Power Management and LED Control

Buy Now View Details

Features and Benefits

  • 16 Port IEEE 802.3at-compliant PSE
  • Autonomous Power Management with flash configuration
  • Serial LED driver for Port LEDs

Product Details

The EVAL-LTC9101-3 is an Ethernet Alliance certified, 16-channel IEEE 802.3at compliant power sourcing equipment (PSE) with autonomous power management and serial LED driver for port LEDs. The EVAL-LTC9101-3 includes the EVAL-LTC9101-3-AZ daughter card, the EVAL-LTC9101-3-MB-AZ motherboard, and features the LTC9101-3 and LTC9103 PSE platform chipset.

In the EVAL-LTC9101-3, a single LTC9101-3 digital controller interfaces with up to two LTC9103, 8-channel, analog controllers for 16 power channels total. Up to sixteen IEEE 802.3af/at/bt powered devices (PDs) can be connected to the EVAL-LTC9101-3 and powered from this system using a single power supply.

The LTC9101-3 and LTC9103 use a proprietary isolated data interface allowing the LTC9101-3 to share the same logic supply as the host controller and eliminate the need for an additional isolated 3.3 V supply. The EVAL-LTC9101-3 operates completely autonomously without a host controller, including flash configuration for power management and port LEDs. Port Status and Fault LEDs quickly show PoE status for up to sixteen ports, including fault codes, driven by the LTC9101-3 using a serial LED driver. A Supply Overload LED warns if system power usage is near the power budget and indicates if port power is denied or revoked.

Please see the User Guide for the full description.
EVAL-LTC9101-3
Evaluating the LTC9101-3/LTC9103 16-Port, IEEE 802.3at PSE Controller with Power Management and LED Control
EVAL-LTC9101-3 Evaluation Board EA Certified 4
EVAL-LTC9101-3
Evaluating the LTC9101-3/LTC9103 16-Port, IEEE 802.3at PSE Controller with Power Management and LED Control
EVAL-LTC9101-3 Evaluation Board EA Certified 4

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