LT4295HUFD#PBF Analog Devices Integrated Circuit (Quad Flat No-Lead) In Stock
The LT4295HUFD#PBF is a PoE++ PD (Powered Device) forward/flyback controller IC from Analog Devices, supporting IEEE 802.3bt Type 3/4 power delivery up to 90 W. It accepts 40 V nominal PoE input up to 60 V maximum and integrates current-mode control for high-efficiency isolated DC/DC conversion. Available in a 28-lead QFN package from global authorized distributors.
- Manufacturer
- Analog Devices
- Package
- Quad Flat No-Lead
- Pin Count
- 28
- Lifecycle
- ACTIVE
- Datasheet
- LT4295HUFD#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.5400(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LT4295HUFD#PBF?
- IEEE 802.3bt PoE++ PD compliant for up to 90 W power delivery
- Current-mode control for forward and flyback isolated converter topologies
- 40 V nominal input with 60 V maximum input voltage tolerance
- Integrated inrush current limiting and PD classification logic
- 28-lead QFN package enabling compact PoE-powered device designs
- High reliability H-grade temperature rating for demanding installations
What is LT4295HUFD#PBF used for?
The LT4295HUFD#PBF is designed for high-power PoE++ powered device applications such as IP cameras with pan-tilt-zoom motors, Wi-Fi 6 access points, industrial IoT edge nodes, and smart building controllers that draw up to 90 W from a single Ethernet cable. Its support for both forward and flyback isolated converter topologies provides flexibility to meet the different output voltage and power level requirements of these systems. The device simplifies compliance with the IEEE 802.3bt standard by integrating PD classification and inrush control, reducing the external component count in space-constrained PoE equipment enclosures.
What are the specifications of LT4295HUFD#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1712 |
| YTEOL | 10 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Input Voltage-Max | 60V |
| Input Voltage-Nom | 40V |
| JESD-30 Code | R-PQCC-N28 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 320kHz |
| Technology | BIPOLAR |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia |
Where can I find the LT4295HUFD#PBF datasheet?
LT4295HUFD#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LT4295HUFD#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How much power can the LT4295HUFD#PBF deliver to a PoE-powered device under IEEE 802.3bt?
The LT4295HUFD#PBF is compliant with IEEE 802.3bt Type 3 and Type 4, which define PD power levels of up to 60 W for Type 3 and 90 W for Type 4 at the powered device. With a 40 V nominal input from the PSE and maximum 60 V input tolerance, the controller enables high-efficiency isolated DC/DC converters that supply 12 V, 24 V, or 48 V rails to power-hungry PoE++ applications such as multi-radio access points.
Which isolated converter topologies does the LT4295HUFD#PBF support, and how does this affect transformer design?
The LT4295HUFD#PBF supports both forward and flyback isolated switching converter topologies using its current-mode control architecture. Forward converters are typically used for output powers above 30 W where transformer core utilization is higher, while flyback converters with fewer than 6 external components are preferred for lower-power outputs under 20 W. This dual topology flexibility allows engineers to optimize transformer turns ratio, core size, and switching frequency between 50 kHz and 500 kHz for the specific output voltage and power level of their PoE device design.
For a compact outdoor PoE IP camera design, how does the LT4295HUFD#PBF's H-grade temperature rating help system reliability?
The LT4295HUFD#PBF carries an H-grade automotive and industrial temperature rating supporting operation from -40°C to 125°C. An outdoor PoE camera enclosure can experience ambient temperatures from -20°C in winter to over 70°C in direct summer sunlight, and internal self-heating adds another 20°C to 40°C above ambient. The H-grade rating provides margin above these worst-case conditions, reducing the risk of thermal shutdown or accelerated electromigration failure over a 10-year outdoor installation lifetime.
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About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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