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.
- IEEE 802.3af/at compliant
- Dual output
- Tight line regulation
- Low ripple
- Excellent load transient response
- High efficiency
- Power saving
- space saving
- low cost
- Security cameras
- Wireless access points
- Point of sale terminals
The Pasadena subsystem design block diagram