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Product Detailed Parameters
- Description：IC POE CNTRL 1 CHANNEL 28TQFN
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tube
- 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 MAX5971BETI+ is a single-port, 40W Power over Ethernet (PoE) Powered Source Entity (PSE) controller compliant with IEEE 802.3af and 802.3at standards. It operates within a supply voltage range of 32V to 60V and supports programmable current limiting. The device features an I²C interface for configuration and monitoring. It functions in an operating temperature range from -40°C to +85°C and consumes 2.5mA of operating supply current. The component is housed in a TQFN-EP-28 surface-mount package.
Feature Summary
- Supports single-port PoE applications up to 40W power delivery
- Integrates I²C interface for system control and status monitoring
- Includes programmable current limiting and power failure detection capabilities
Applications
- Single-port PoE power injector designs
- IEEE 802.3af/at powered network equipment
- Class 5 PoE power sourcing modules
Procurement Notes
Verify the specific suffix ETI against official Analog Devices documentation to confirm the exact package type and tape/reel specifications. Ensure the component meets RoHS compliance requirements for your target market. Confirm availability through authorized distributors as stock levels may vary. Cross-reference the datasheet revision date to ensure compatibility with your design specifications.
Selection Notes
Select this controller for designs requiring strict adherence to IEEE 802.3af/at standards with integrated management capabilities. The I²C interface allows for flexible system integration and real-time monitoring. Consider the thermal performance within the TQFN-EP-28 package when designing the PCB layout. Verify that the input voltage range aligns with your power supply architecture.
Part Context
This component belongs to the MAX5971 series of hot-swap voltage controllers designed specifically for PoE applications. It serves as a critical interface between the network infrastructure and powered devices, ensuring reliable power delivery while maintaining protocol compliance. The series is part of Analog Devices' broader portfolio of LAN and PoE solutions.
Replacement Considerations
Consult the official Analog Devices replacement guide for verified substitute part numbers. Ensure any alternative component maintains IEEE 802.3af/at compliance and compatible pinout configurations. Verify that the replacement offers equivalent thermal and electrical characteristics.
