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reference designLT4295

Analog Devices LT4295

IEEE 802.3bt PD Interface with Forward/Flyback Controller

Overview

TopologyForward Converter
Input voltage37-57 V
Switching frequency214-300 kHz
Output 112 V / 5.5 A

Description

The LT®4295 is an IEEE 802.3af/at/bt(Draft 2.0)-compliantpowered device (PD) interface controller with aswitching regulator controller. The T2P output indicatesthe number of classification events received during IEEE802.3bt-compliant mutual identification and negotiationof available power.

Features

IEEE 802.3af/at/bt(Draft 2.0) Powered Device (PD)with Forward/Flyback Controllern Supports Up to 71 Watt PDsn 5-Event Classification Sensingn Superior Surge Protection (100V Absolute Maximum)n Wide Junction Temperature Range (–40°C to 125°C)n >94% End-to-End Efficiency with LT4321 Ideal Bridgen External Hot Swap N-Channel MOSFET for LowestPower Dissipation and Highest System Efficiencyn No-Opto Flyback Operationn Auxiliary Power Support as Low as 9Vn Easy Migration of LTPoE++® PDs to IEEE 802.3bt PDsn Pin Compatible with LT4276A/B/Cn 28-Lead 4mm × 5mm QFN Package

Typical applications

  • Outdoor Security Camera Equipment
  • Commercial and Public Information Displays
  • High Power Wireless Data Systems
  • High Temperature Applications

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
Qty.
Data rate
Ports
PoE
Improved CMRR
Operating Temperature
VT(V (RMS))
Mount
L(µH)
SamplesAvailability & Sample
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744314650
SPECWE-HCI SMT Flat Wire High Current Inductor, 6.6 A, 2 A

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

Simu­lation
Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCI SMT Flat Wire High Current Inductor
Performance Rated Current6.6 A
Saturation Current @ 10%2 A
Saturation Current @ 30%6 A
DC Resistance21.5 mΩ
Self Resonant Frequency50 MHz
MaterialSuperflux 
Packaging Unit1000 
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Operating Temperature -40 °C up to +150 °C
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MountSMT 
Inductance6.5 µH
–Check availability
749022016
SPECWE-LAN LAN Transformer, –, –
Simu­lation
Availability
–
Downloads4 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-LAN LAN Transformer
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Data rate1000BASE-T 
Ports1 
PoEPoE+ (up to 1150 mA) 
Improved Common Mode RejectionNo 
Operating Temperature 0 °C up to +70 °C
Insulation Test Voltage1500 V (RMS)
MountSMT 
Inductance350 µH
–Check availability