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Product Detailed Parameters
- Description：IC POE CNTRL 1 CHANNEL 28TQFN
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Controller (PSE)
- Number of Channels：1
- Power - Max：40 W
- Internal Switch(s)：Yes
- Auxiliary Sense：No
- Standards：802.3at (PoE+), 802.3af (PoE)
- Voltage - Supply：32V ~ 60V
- Current - Supply：2.5mA
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：28-WFQFN Exposed Pad
- Supplier Device Package：28-TQFN (5x5)
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Overview
The MAX5971AETI+T is a single-port Power over Ethernet (PoE) Powered Device (PD) controller featuring an integrated high-side N-channel MOSFET. It supports IEEE 802.3af/at standards, delivering up to 40W of power. The device operates within a supply voltage range of 32V to 60V and includes programmable current limiting with adjustable slew rate control. Integrated features include power fail detection, thermal shutdown, and I2C interface for configuration.
Feature Summary
- Integrates a high-side N-channel MOSFET for compact single-port PoE PD designs
- Supports IEEE 802.3af/at Class 4 operation with up to 40W power delivery
- Provides programmable current limit and slew rate via external components
- Includes I2C interface for real-time monitoring and configuration
Applications
- Single-port PoE Powered Devices requiring up to 40W
- IP cameras and wireless access points
- Industrial IoT edge devices
- PoE midspan injectors
Procurement Notes
Verify the specific suffix ETI+T against the manufacturer's official datasheet to confirm package type and tape/reel specifications. Confirm RoHS compliance status directly from the component documentation. Check for obsolescence notices or lifecycle changes on the Analog Devices website before finalizing procurement plans.
Selection Notes
Select this component for applications requiring integrated MOSFET solutions to reduce board space. Ensure the design supports the 32V to 60V input range. Verify that the required power class does not exceed 40W. Consider the I2C interface requirements for system integration if remote monitoring is necessary.
Part Context
Part of the MAX5971 family of PoE controllers designed for high-power single-port applications. This series integrates power switches to simplify design compared to discrete solutions. It targets modern PoE++ and high-power PoE deployments in networking and industrial sectors.
Replacement Considerations
Consult the official cross-reference list for verified substitutes. Generic replacements may lack integrated MOSFETs or specific IEEE compliance features.
