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Main Title - 201709 Maxim Pasadena

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Maxim - Pasadena Reference Design

Long Copy - 201709 Maxim Pasadena

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Pasadena 3.3V and 5V PoE Powered Device

Maxim offered a turnkey solution to IP CAM for 5V system supply. The Pasadena (MAXREFDES31#) 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 a 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.

Maxim MAX5969B MAX5974 IP CAM turnkey solution



  • IEEE 802.3af/at compliant
  • Dual output
  • Tight line regulation
  • Low ripple
  • Excellent load transient response
  • High efficiency



  • Power saving
  • space saving
  • low cost


Target Applications

  • Security cameras
  • Wireless access points
  • Point of sale terminals


The Pasadena subsystem design block diagram

MAX5969B MAX5974 IP CAM turnkey solution block diagram

Product collaterals


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