PM8805 Description
The PM8805 is a system-in-package for smart power supply of Power over Ethernet (PoE) Powered Devices (PD) and it is applicable for power level up to 99.9 W. two active bridges and their driving circuitry, a charge pump to drive the high-side MOSFETs, the hot swap MOSFET and the interface pliant with IEEE 802.3bt. The device performs the physical layer classification, providing the indication of successful PSE type...
PM8805 Key Features
- Dual active bridge, hot swap MOSFET and PoE-PD interface in a system-inpackage
- 100 V N-ch MOSFETs with 0.2 Ω total path resistance for each active bridge
- 100 V, 0.1 Ω high-side N-ch hot swap MOSFET
- PoE-PD single-signature interface pliant with IEEE 802.3bt / at / af
- Supports 4-pair PoE
PM8805 Applications
- Supports 12 V auxiliary sources
- Identifies which kind of PSE (standard or legacy) is connected with and