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Product Detailed Parameters
- Description：IC POE CNTRL 1 CHANNEL 32DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Controller (PD), DC/DC
- Number of Channels：1
- Power - Max：25.5 W
- Internal Switch(s)：Yes
- Auxiliary Sense：Yes
- Standards：802.3at (PoE+), 802.3af (PoE)
- Voltage - Supply：37.2V ~ 60V
- Current - Supply：1.35mA (Max)
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：32-WFDFN Exposed Pad
- Supplier Device Package：32-DFN (7x4)
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Overview
The LTC4278IDKD#TRPBF is a Powered Device (PD) controller compliant with the IEEE 802.3at standard for Power over Ethernet applications. It integrates a synchronous flyback controller designed to operate without optocouplers, thereby reducing component count and board space. The device supports dual output configurations and includes an integrated power switch. It operates within a temperature range of -40°C to +85°C and is housed in a compact 32-lead DFN package.
Feature Summary
- Supports no-optocoupler synchronous flyback control architecture
- Integrates high-voltage power switch for simplified design
- Complies with IEEE 802.3at Powered Device standards
- Enables dual-output power conversion capabilities
Applications
- IEEE 802.3at Powered Device implementations
- Power over Ethernet endpoint circuits
- Network interface hardware requiring isolated power supplies
Procurement Notes
Verify the specific suffix against official Analog Devices documentation to confirm exact thermal grade and packaging configuration. Ensure compatibility with required isolation voltage ratings and input supply ranges for the target application environment before finalizing procurement.
Selection Notes
Select this component when designing IEEE 802.3at PD systems that require reduced bill-of-materials through optocoupler elimination. Evaluate the integrated switch current handling against maximum load requirements and verify thermal performance within the specified operating temperature range for the intended enclosure.
Part Context
This part belongs to the LTC4278 series of PoE controllers from Analog Devices. It is specifically engineered for Powered Devices rather than Power Sourcing Equipment. The series focuses on integrating control logic and switching elements to streamline high-efficiency power delivery over Ethernet cabling infrastructure.
Replacement Considerations
Consult official substitution guides for equivalent PoE PD controllers. Verify pinout compatibility and electrical specifications if considering alternative manufacturers or updated series revisions.
