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reference designLTC9101-2B | Demoboard EVAL-LTC9101-2B

Analog Devices LTC9101-2B | Demoboard EVAL-LTC9101-2B

Evaluating the LTC9101-2/LTC9101-2A/LTC9101-2B and LTC9102 48-Channel IEEE 802.3at/bt PSE

Overview

TopologyLAN / POE
Input voltage51-57 V
IC revisionA

Description

The EVAL-LTC9101-2 is a 48-channel IEEE 802.3at/bt compliant power sourcing equipment (PSE). The EVAL-LTC9101-2 includes the DC3159A-C, DC3159A-D, or DC3159A-E daughter card, the DC3017A-B motherboard, and features the LTC9101-2/ LTC9101-2A/LTC9101-2B and LTC9102 chipset.In the EVAL-LTC9101-2, the daughter card has a single LTC9101-2x digital controller, where X denotes either the LTC9101-2, LTC9101-2A, or the LTC9101-2B. The DC3159A-C has the LTC9101-2, the DC3159A-D daughter card has the LTC9101-2A and the DC3159A-E has the LTC9101-2B. The digital controller interfaces with four LTC9102 (12-channel) analog controllers for a total of 48 PSE channels.

Features

  • Fully Compliant IEEE 802.3bt Type 3 2-Pair PSE
  • Up to 48 PSE Ports with One Power Channel per Port
  • +80V/–20V Tolerant Port-Facing Pins
  • ECC-Protected eFlash and Data RAMs
  • Industry-Leading Power Path Efficiency
  • 100mΩ Sense Resistance
  • 30mΩ or Lower MOSFET RDS(ON)
  • Chipset Provides Electrical Isolation
  • Eliminates Optos and Isolated 3.3V Supply
  • Very High Reliability Multipoint PD Detection
  • Continuous Voltage, Temperature, and Current Monitoring
  • 1MHz I2C Compatible Serial Control Interface
  • Pin or I2C Programmable PD Power
  • Available in a 24-Lead 4mm × 4mm (LTC9101-2B) and 64-Lead 7mm × 11mm (LTC9102) QFN Packages

Typical applications

  • PoE PSE Switches/Routers and Midspans

More information

Parts approved by Analog Devices

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(mm)
f(mm)
λDom typ.(nm)
Emitting Color
λPeak typ.(nm)
IV typ.(mcd)
VF typ.(V)
Chip Technology
2θ50% typ.(°)
C
Tol. C
VR(V (DC))
Size
DF(%)
RISO
Ceramic Type
W(mm)
H(mm)
Fl(mm)
Packaging
Pins
Version
Type
IR(A)
Working Voltage(V (AC))
Data rate
Ports
PoE
Improved CMRR
Operating Temperature
VT(V (RMS))
Mount
L(µH)
SamplesAvailability & Sample
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885012206020
SPECWCAP-CSGP MLCCs 10 V(DC), 1.6 mm, –
Simu­lation
Availability
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 10 V(DC)
Length1.6 mm
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Capacitance100 nF
Capacitance±10% 
Rated Voltage10 V (DC)
Size0603 
Dissipation Factor5 %
Insulation Resistance5 GΩ
Ceramic TypeX7R Class II 
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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Operating Temperature -55 °C up to +125 °C
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155060BS75300
SPECWL-SMSW SMT Mono-color Side View Waterclear, 1.6 mm, –
Simu­lation
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Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWL-SMSW SMT Mono-color Side View Waterclear
Length1.6 mm
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Dominant Wavelength [typ.]470 nm
Emitting ColorBlue 
Peak Wavelength [typ.]465 nm
Luminous Intensity [typ.]145 mcd
Forward Voltage [typ.]3.2 V
Chip TechnologyInGaN 
Viewing Angle Phi 0° [typ.]140 °
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Size0603 rectangular 
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Width0.98 mm
Height0.8 mm
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Operating Temperature -40 °C up to +85 °C
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MountSMT 
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62000311121
SPECWR-PHD Pin Header, 6 mm, –
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header
Length6 mm
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Insulation Resistance1000 MΩ
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PackagingBag 
Pins3 
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TypeStraight 
Rated Current2 A
Working Voltage200 V (AC)
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Operating Temperature -40 °C up to +105 °C
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MountTHT 
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–Check availability
7490220122
SPECWE-LAN LAN Transformer, 17.55 mm, –
Simu­lation
Availability
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Downloads10 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-LAN LAN Transformer
Length17.55 mm
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Width16 mm
Height98.8 mm
Pad Dimension13.97 mm
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Pins24 
VersionSMT 
Type4PPoE (to 900 mA) 
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Data rate10/100/1000BASE-T 
Ports1 
PoE4PPoE (up to 1000 mA) 
Improved Common Mode RejectionNo 
Operating Temperature -40 °C up to +105 °C
Insulation Test Voltage1500 V (RMS)
MountSMT 
Inductance350 µH
–Check availability
702937000
SPECWA-SNSR Self-Retaining Spacer, 19.1 mm, 4.8 mm
Simu­lation–
Availability
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Downloads3 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWA-SNSR Self-Retaining Spacer
Length19.1 mm
Drilling in Panel4.8 mm
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Operating Temperature -30 °C up to +85 °C
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61202021721
SPECWR-BHD 2.54 mm Male, 33.06 mm, –

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

Simu­lation–
Availability
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-BHD 2.54 mm Male
Length33.06 mm
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Insulation Resistance1000 MΩ
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PackagingTray 
Pins20 
VersionLow Profile 
TypeAngled 
Rated Current3 A
Working Voltage250 V (AC)
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Operating Temperature -40 °C up to +105 °C
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MountTHT 
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–Check availability