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Product Detailed Parameters
- Description：IC POE CNTRL 1 CHANNEL 28QFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Type：Controller (PD)
- Number of Channels：1
- Power - Max：71 W
- Internal Switch(s)：No
- Auxiliary Sense：Yes
- Standards：802.3at (PoE+), 802.3af (PoE)
- Voltage - Supply：60V (Max)
- Current - Supply：2mA (Max)
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：28-WFQFN Exposed Pad
- Supplier Device Package：28-QFN (4x5)
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Overview
The LT4295IUFD#PBF is a Powered Device (PD) interface controller compliant with IEEE 802.3af, 802.3at, and 802.3bt standards. It operates within a supply voltage range of up to 60 V and supports output power up to 71 W. The device functions across an operating temperature range from -40°C to +85°C and utilizes a QFN-28 surface-mount package. Its quiescent current is specified at 1 mA, with a maximum duty cycle of 70%.
Feature Summary
- Supports IEEE 802.3bt Type 3 and Type 4 powered device applications
- Integrates forward and flyback converter control capabilities
- Provides comprehensive protection mechanisms for PoE interfaces
Applications
- IEEE 802.3bt PoE++ powered devices
- High-power network endpoint equipment
- PoE-powered industrial sensors and controllers
Procurement Notes
Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence per Analog Devices documentation. Confirm the QFN-28 package variant matches design requirements. Ensure compatibility with associated DC2475A-A demonstration circuits if reference designs are utilized. Cross-check electrical specifications against the official datasheet for any revisions.
Selection Notes
Select this component for applications requiring integrated PD classification and high-power conversion control under IEEE 802.3bt standards. The QFN-28 package suits space-constrained designs. Verify thermal management needs given the 71 W output capability. Ensure system architecture supports the required 60 V input range and operating temperature extremes.
Part Context
This part belongs to the LT4295 series of PoE interface controllers manufactured by Analog Devices. It is designed specifically for powered devices rather than power sourcing equipment. The component integrates detection, classification, and power delivery management functions essential for modern high-power Ethernet applications.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Consult Analog Devices technical support or official distributor databases for verified cross-references before implementation.
