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Product Detailed Parameters
- Description：IC POE CNTRL 1 CHANNEL 12DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Type：Controller (PD)
- Number of Channels：1
- Power - Max：25.5 W
- Internal Switch(s)：Yes
- Auxiliary Sense：No
- Standards：802.3at (PoE+), 802.3af (PoE)
- Voltage - Supply：37.2V ~ 60V
- Current - Supply：1.35mA
- Operating Temperature：0°C ~ 70°C
- Mounting Type：Surface Mount
- Package / Case：12-WFDFN Exposed Pad
- Supplier Device Package：12-DFN (4x3)
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Overview
The LTC4265CDE#PBF is a Power Sourcing Equipment (PSE) controller compliant with IEEE 802.3at Type 2 and 802.3af standards, designed for high-power PoE applications. It integrates a single-channel power switch with a maximum on-resistance of 3 Ohms and a current limit of 425 mA. The device operates within a supply voltage range of 33 V to 66 V and draws a typical operating current of 2 mA. Packaged in a compact 12-lead DFN (4x3 mm) format, it supports surface-mount installation and functions reliably across an industrial temperature range from 0°C to +70°C.
Feature Summary
- Integrates a single-channel power switch with internal control logic for simplified implementation
- Supports both IEEE 802.3at Type 2 and legacy 802.3af PoE standards
- Includes built-in diagnostic capabilities for monitoring port status and faults
Applications
- High-power PoE midspan injectors
- PoE-powered access points and wireless LAN controllers
- Network infrastructure equipment requiring Type 2 power delivery
Procurement Notes
Verify the specific suffix #PBF confirms lead-free and RoHS compliance before procurement. Confirm the DFN package dimensions match your PCB footprint requirements. Ensure the operating voltage range aligns with your system's power supply rails. Check for any recent manufacturing changes or obsolescence notices from Analog Devices.
Selection Notes
Select this component when designing systems requiring integrated Type 2 PSE functionality without external switches. Compare against the LTC4264 for lower power requirements or the LTC4266 for dual-port solutions. Consider the 12-lead DFN package size constraints during layout planning. Verify thermal performance under maximum load conditions within the specified temperature range.
Part Context
This part belongs to the LTC426x family of PoE interface controllers from Analog Devices. It serves as a core component for implementing compliant power sourcing equipment in modern network infrastructure. The device simplifies design by combining control and switching functions into a single integrated circuit.
Replacement Considerations
Public confirmed substitutes include the LTC4265IDE#PBF for extended temperature ranges and the LTC4265CDE#TRPBF for tape-and-reel packaging variants.
