LTC9103

RECOMMENDED FOR NEW DESIGNS

8-Channel IEEE802.3bt (PoE 2) PSE Analog Controller

Data Sheet (Rev. 0) Product Selection Table

Part Models: 2
1ku List Price: Starting From $5.14

Viewing:

Part Details

Fully Compliant IEEE 802.3bt Type 3 and 4 PSE
Fully Compliant IEEE 802.3at Type 2 PSE
Software-Compatible with LTC4291-1/LTC4292
Up to 48 PSE Ports with One Power Channel per Port
Up to 24 PSE Ports with Two Power Channels per Port
ECC-Protected eFlash and Data RAMs
Low Power Path Dissipation per Channel
- 100mΩ Sense Resistance
- 30mΩ or Lower MOSFET R_DS(ON)
Chipset Provides Electrical Isolation
- Eliminates Optos and Isolated 3.3V Supply

Very High Reliability Multipoint PD Detection
- Connection Check Distinguishes Single-Signature and Dual-Signature PDs
Continuous Per-Port Power and Current Monitoring
1MHz I²C Compatible Serial Control Interface
Pin or I²C Programmable PD Power
Available in 24-Lead 4mm × 4mm (LTC9101‑1) and a 64-Lead 7mm × 11mm (LTC9102/LTC9103) QFN Packages

Part Models: 2
1ku List Price: Starting From $5.14

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTC9103AUKJ#PBF	64-Lead QFN (7mm x 11mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC9103AUKJ#TRPBF	64-Lead QFN (7mm x 11mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Evaluation Kits

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

Buy Now View Details

Product Details

The EVAL-LTC9101-3 is a 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-MBAZ 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.

Resources

EVAL-LTC9101-3 - Schematic
739.67 K

EVAL-LTC9101-3 - Design Files
10.03 M

UG-2132: Evaluating the LTC9101-3/LTC9103 16-Port, IEEE 802.3at PSE Controller with Power Management and LED Control (Rev.0)
1.03 M

DC3159A and DC3017A LTC9101-1/LTC9102/LTC9103 24-Port, 4-Pair IEEE 802.3bt PSE

Buy Now View Details

Product Details

Demonstration kit 3160A-KIT is an Ethernet Alliance Gen 2 PoE certified, 24-port IEEE 802.3at/bt-compliant power sourcing equipment (PSE) composed of a DC3159A daughter card (48-channels) and DC3017A motherboard (24, 4-pair ports). The DC3160A-KIT features the LTC9101-1/LTC9102/LTC9103 PSE platform chipset.

In the DC3160A-KIT, a single LTC9101-1 digital controller interfaces with up to four analog controllers. The DC3159A-A daughter card has four LTC9102, 12-channel, analog controllers for 48 power channels total. The DC3159A-B daughter card has two LTC9102, 12-channel, analog controllers and two LTC9103, 8-channel, analog controllers for 40 power channels total. Up to twenty four IEEE 802.3af, IEEE 802.3at, or IEEE 802.3bt powered devices (PDs) can be connected to the DC3160A-KIT and powered from this system using a single power supply.

The LTC9101-1, LTC9102, and LTC9103 use a proprietary isolated data interface allowing the LTC9101-1 to directly connect to the host controller I2C interface and eliminates the need for costly opto-couplers and an additional 3.3V supply. The DC3160A-KIT can operate completely autonomously without a host controller or with a DC590 for I²C interfacing.

Robust surge protection is provided by design and onboard surge protection devices. Indicator LEDs show channel status for up to 48 power channels. An optional on-board buck regulator provides 3.3V from the VEE supply for the digital circuity. This demonstration manual provides an auto mode quick start procedure and DC3160A-KIT overview.

Design files for this circuit board are available.