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Overview
| Topology | Flyback Converter |
| Input voltage | 9-57 V |
| Switching frequency | 214-300 kHz |
| Output 1 | 12 V / 1.9 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
- Commercial and Public Information Displays
- Outdoor Security Camera Equipment
- 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 max. (mΩ) | Material | LR (µH) | fres (MHz) | Version | VIN | VOut1 (V) | IOut1 (A) | L (µH) | n | VT (V (AC)) | Size | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 7443330820 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-HCC SMT High Current Cube Inductor | 8.9 | 9.3 | 12.5 | 15 | Ferrite | 2.8 | 36 | SMT | – | – | – | 8.2 | – | – | 1090 | SMT | ||
 | 750315422 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WE-PoE Power over Ethernet Transformer | – | – | – | – | – | – | – | Flyback | 9 - 57 V (DC) | 12 | 2 | 9 | 1:1.12:1 | 1500 | EFD20 | SMT |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 7443330820 | SPEC | |
| 750315422 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | Material | LR (µH) | fres (MHz) | Version | VIN | VOut1 (V) | IOut1 (A) | L (µH) | n | VT (V (AC)) | Size | Mount | Samples |
|---|