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Overview
| Topology | Flyback Converter |
| Input voltage | 8 V |
| Switching frequency | 214-300 kHz |
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
Order Code | Datasheet | Simulation | Downloads | Status | Product series | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC(mΩ) | fres(MHz) | Material | Qty. | RDC max.(mΩ) | LR(µH) | ISAT(A) | LSmin.(µH) | Version | VIN | VOut1(V) | IOut1(A) | L(µH) | n | VT(V (AC)) | Size | Mount | Vaux(V) | RDC 1(mΩ) | RDC 2(mΩ) | RDC 3(mΩ) | SamplesAvailability & Sample | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | SPECWE-HCI SMT Flat Wire High Current Inductor, 6 A, 2.5 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Performance Rated Current6 A | Saturation Current @ 10%2.5 A | Saturation Current @ 30%4.7 A | DC Resistance24.5 mΩ | Self Resonant Frequency57 MHz | MaterialSuperflux | Packaging Unit1500 | DC Resistance26.95 mΩ | Rated Inductance3.3 µH | – | – | VersionSMT | – | – | – | Inductance4.7 µH | – | – | Size5040 | MountSMT | – | – | – | – | –Check availability | |||
| SPECWE-HCI SMT Flat Wire High Current Inductor, 6.6 A, 2 A | Availability – | 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 | DC Resistance23.65 mΩ | Rated Inductance4.5 µH | – | – | VersionSMT | – | – | – | Inductance6.5 µH | – | – | Size7050 | MountSMT | – | – | – | – | –Check availability | |||
| SPECWE-HCI SMT Flat Wire High Current Inductor, 8.3 A, 2.2 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Performance Rated Current8.3 A | Saturation Current @ 10%2.2 A | Saturation Current @ 30%6.5 A | DC Resistance14.5 mΩ | Self Resonant Frequency56 MHz | MaterialSuperflux | Packaging Unit1000 | DC Resistance15.95 mΩ | Rated Inductance3.4 µH | – | – | VersionSMT | – | – | – | Inductance4.9 µH | – | – | Size7050 | MountSMT | – | – | – | – | –Check availability | |||
 | SPECWE-HCC SMT High Current Cube Inductor, 8.9 A, 9.3 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCC SMT High Current Cube Inductor | Performance Rated Current8.9 A | Saturation Current @ 10%9.3 A | Saturation Current @ 30%12.5 A | – | Self Resonant Frequency36 MHz | MaterialFerrite | Packaging Unit400 | DC Resistance15 mΩ | Rated Inductance2.8 µH | – | – | VersionSMT | – | – | – | Inductance8.2 µH | – | – | Size1090 | MountSMT | – | – | – | – | –Check availability | |||
| SPECWE-HCI SMT Flat Wire High Current Inductor, 29.9 A, 14 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Performance Rated Current29.9 A | Saturation Current @ 10%14 A | Saturation Current @ 30%25 A | DC Resistance1.25 mΩ | Self Resonant Frequency507 MHz | MaterialSuperflux | Packaging Unit1500 | DC Resistance1.375 mΩ | Rated Inductance0.18 µH | – | – | VersionSMT | – | – | – | Inductance0.22 µH | – | – | Size5040 | MountSMT | – | – | – | – | –Check availability | |||
 | SPECWE-PoE+ Power over Ethernet Plus Transformer, –, – | Simulation– | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PoE+ Power over Ethernet Plus Transformer | – | – | – | – | – | – | Packaging Unit200 | – | – | Saturation Current3.2 A | Leakage Inductance [min.]0.625 µH | VersionCCM Flyback | Input Voltage 37 - 57 V (DC) | Output Voltage 13.3 V | Output Current 17.5 A | Inductance38 µH | Turns Ratio6.67:1:4 | Insulation Test Voltage1500 V (AC) | SizeEP13 | MountSMT | Auxiliary Voltage12.7 V | DC Resistance 1100 mΩ | DC Resistance 23 mΩ | DC Resistance 3182 mΩ | –Check availability | ||
749022016 | SPEC10/100/1000 Base-T SMT Transformer, –, – | Availability – | Downloads– | Status Activei| Production is active. Expected lifetime: >10 years. | Product series 10/100/1000 Base-T SMT Transformer | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Inductance350 µH | – | Insulation Test Voltage1500 V (AC) | – | MountSMT | – | – | – | – | –Check availability | ||
 | SPECWE-PoE++ Power over Ethernet Plus Plus Transformer, –, – | Simulation– | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PoE++ Power over Ethernet Plus Plus Transformer | – | – | – | – | – | – | – | – | – | – | – | VersionForward | Input Voltage 40 - 57 V (DC) | Output Voltage 15 V | Output Current 117 A | Inductance175 µH | Turns Ratio3.5:1:2.25 | Insulation Test Voltage2400 V (AC) | SizeEFD20 | MountSMT | Auxiliary Voltage10.75 V | DC Resistance 150 mΩ | DC Resistance 210 mΩ | DC Resistance 3188 mΩ | –Check availability | ||
 | SPECWE-PoE Power over Ethernet Transformer, –, – | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PoE Power over Ethernet Transformer | – | – | – | – | – | – | – | – | – | Saturation Current1.8 A | – | VersionFlyback | Input Voltage 36 - 57 V (DC) | Output Voltage 15 V | Output Current 12.3 A | Inductance44 µH | Turns Ratio4:1:1:2.5 | Insulation Test Voltage2400 V (AC) | SizeEP7 | MountSMT | Auxiliary Voltage12 V | DC Resistance 1305 mΩ | DC Resistance 240 mΩ | DC Resistance 340 mΩ | –Check availability | |||
 | SPECWE-PoE Power over Ethernet Transformer, –, – | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PoE Power over Ethernet Transformer | – | – | – | – | – | – | – | – | – | Saturation Current2.75 A | – | VersionFlyback | Input Voltage 40 - 57 V (DC) | Output Voltage 124 V | Output Current 11 A | Inductance37 µH | Turns Ratio1:1:0.56 | Insulation Test Voltage2400 V (AC) | SizeEP13 | MountSMT | Auxiliary Voltage12.5 V | DC Resistance 179 mΩ | DC Resistance 260 mΩ | DC Resistance 3116 mΩ | –Check availability | |||
 | SPECWE-PoE+ Power over Ethernet Plus Transformer, –, – | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PoE+ Power over Ethernet Plus Transformer | – | – | – | – | – | – | – | – | – | Saturation Current3.8 A | – | VersionFlyback | Input Voltage 48 - 57 V (DC) | Output Voltage 15 V | Output Current 17 A | Inductance26 µH | Turns Ratio4.5:1:2.5 | Insulation Test Voltage2400 V (AC) | SizeEP13 | MountSMT | Auxiliary Voltage12 V | DC Resistance 194 mΩ | DC Resistance 27 mΩ | DC Resistance 3233 mΩ | –Check availability | |||
 | SPECWE-PoE Power over Ethernet Transformer, –, – | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PoE Power over Ethernet Transformer | – | – | – | – | – | – | – | – | – | Saturation Current8.5 A | – | VersionFlyback | Input Voltage 9 - 57 V (DC) | Output Voltage 112 V | Output Current 12 A | Inductance9 µH | Turns Ratio1:1.12:1 | Insulation Test Voltage1500 V (AC) | SizeEFD20 | MountSMT | Auxiliary Voltage10 V | DC Resistance 112.5 mΩ | DC Resistance 214 mΩ | DC Resistance 3385 mΩ | –Check availability | |||
750316115 | SPECFlyback Transformer, –, – | Simulation– | Availability – | Downloads– | Status Activei| Production is active. Expected lifetime: >10 years. | Product series Flyback Transformer | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | –Check availability | |
 | SPECWE-PoE+ Power over Ethernet Plus Transformer, –, – | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PoE+ Power over Ethernet Plus Transformer | – | – | – | – | – | – | – | – | – | Saturation Current7.7 A | – | VersionFlyback | Input Voltage 41 - 57 V (DC) | Output Voltage 112 V | Output Current 14 A | Inductance18 µH | Turns Ratio2:1:1 | Insulation Test Voltage1500 V (AC) | SizeEFD20 | MountSMT | Auxiliary Voltage12 V | DC Resistance 120 mΩ | DC Resistance 211 mΩ | DC Resistance 366 mΩ | –Check availability | |||
750316231 | SPECFlyback Transformer, –, – | Simulation– | Availability – | Downloads– | Status Activei| Production is active. Expected lifetime: >10 years. | Product series Flyback Transformer | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | –Check availability |
Availability Forecast
WE item number Packaging unitsLead time
––– weeks
| Expected Availability | Opening inventory | Quantity |
|---|---|---|
| Current Availability | – | – |
There is no forecast for this quantity request.
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