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Overview
| Topology | Flyback Converter |
| Switching frequency | 214-300 kHz |
| Output 1 | 12 V / 4 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
Order Code | Datasheet | Simulation | Downloads | Status | Product series | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC(mΩ) | fres(MHz) | Material | Qty. | Version | VIN | VOut1(V) | IOut1(A) | L(µH) | n | VT(V) | Size | Vaux(V) | RDC 1(Ω) | RDC 2(Ω) | RDC 3(Ω) | Mount | 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 | VersionSMT | – | – | – | Inductance4.7 µH | – | – | Size5040 | – | – | – | – | 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 | VersionSMT | – | – | – | Inductance0.22 µH | – | – | Size5040 | – | – | – | – | MountSMT | –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 | – | – | – | – | – | – | – | 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 | SizeEFD20 | Auxiliary Voltage12 V | DC Resistance 10.02 Ω | DC Resistance 20.011 Ω | DC Resistance 30.066 Ω | MountSMT | –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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