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Reference Design Board, 3.3V and 5V PoE Powered Device

MAXREFDES31# - Reference Design Board, 3.3V and 5V PoE Powered Device

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MAXREFDES31#   Datasheet
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Product Overview

The MAXREFDES31# from Maxim Integrated Products is a Pasadena MAXREFDES31 reference design. The reference design features the MAX5969B and MAX5974A. The MAX5969B controller is fully compliant with the IEEE® 802.3af/at standard in a power-over-Ethernet (PoE) system. The device can also be powered from a wall adapter (WAD). The WAD operates with higher priority than PoE which is controlled by the MAX5969B. The MAX5974A controls 40V to 57V input-voltage, current-mode PWM converters and provides frequency foldback. Using these devices, this reference design is IEEE 802.3af/at compliant. It is also a high-performance, compact and cost-effective solution for a PD supporting power up to Class 4 power level. Typical applications include security cameras, wireless access points and point of sale terminals.
  • Tight line regulation
  • Low ripple
  • Excellent load transient response
  • High efficiency

Product Information

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Maxim Integrated Products

MAX5969B, MAX5974A

Power Management

Power Over Ethernet (POE)




Pasadena Ref Design Board


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Technical Docs (2)

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