MAX5991BETP+

$5.21

Description：IC POE CNTRL 1 CHANNEL 20TQFN
Series：-
Mfr：Analog Devices Inc./Maxim Integrated
Package：Tube

SKU:cf776913d514 Category: Power Over Ethernet (PoE) Controllers Brand: Analog Devices Inc./Maxim Integrated

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Product introduction

Product Detailed Parameters

Description：IC POE CNTRL 1 CHANNEL 20TQFN
Series：-
Mfr：Analog Devices Inc./Maxim Integrated
Package：Tube
Type：Controller (PD), DC/DC
Number of Channels：1
Power - Max：6.49 W
Internal Switch(s)：Yes
Auxiliary Sense：Yes
Standards：802.3af (PoE)
Voltage - Supply：8.7V ~ 60V
Current - Supply：4.8mA
Operating Temperature：-40°C ~ 85°C
Mounting Type：Surface Mount
Package / Case：20-WFQFN Exposed Pad
Supplier Device Package：20-TQFN (4x4)

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MAX5991BETP+

Overview

The MAX5991BETP+ is a Power over Ethernet (PoE) controller compliant with IEEE 802.3af standards, designed for Class 1 and Class 2 Powered Devices. It integrates a high-efficiency DC-DC converter to reduce system complexity and heat generation. The device operates within a supply voltage range of 4V to 57V and features an operating temperature range from -40°C to +85°C. Packaged in a 20-pin TQFN (4mm x 4mm) footprint, it supports single-channel PoE applications.

Feature Summary

IEEE 802.3af-compliant control for Class 1 and Class 2 Powered Devices
Integrated high-efficiency DC-DC converter for reduced heat generation
Supports wide input voltage range from 4V to 57V
Compact 20-pin TQFN package design

Applications

Power over Ethernet Powered Device implementations
Network infrastructure equipment requiring integrated power conversion
IoT devices connected via Ethernet
Industrial communication modules

Procurement Notes

Verify the specific suffix 'ETP+' against the official Analog Devices datasheet to confirm the exact pinout, thermal pad configuration, and RoHS compliance status. Ensure the procurement channel provides valid traceability documentation. Confirm that the 20-TQFN package dimensions match your PCB layout requirements before finalizing orders.

Selection Notes

Select this component when designing IEEE 802.3af Class 1 or Class 2 Powered Devices requiring an integrated solution. It is suitable for applications needing high-efficiency power conversion to minimize thermal management constraints. Consider the 20-TQFN package size and the 4V to 57V input range compatibility with your system architecture.

Part Context

The MAX5991BETP+ belongs to the Maxim Integrated PoE controller family, specifically targeting Powered Devices (PD). It simplifies design by combining PoE detection, classification, and power delivery control with an onboard DC-DC converter. This integration reduces the bill of materials and board space compared to discrete solutions.