PM8800A
Overview
The PM8800A integrates a standard power over Ethernet (PoE) interface and a current mode PWM controller to simplify the design of the power supply sections of all powered devices. The PoE interface incorporates all the functions required by the IEEE 802.3af including detection, classification, under-voltage lockout (UVLO) and in-rush current limitation.
- IEEE 802.3af compliant PD interface
- Works with power supplied from Ethernet LAN cables or from local auxiliary sources
- Integrated 100 V, 0.5 Ω, 800 mA hot-swap MOSFET
- Integrated signature resistor
- Programmable in-rush current limit
- Programmable classification current
- Programmable DC current limit up to 800 mA
- High voltage start-up bias regulator
- Thermal shutdown protection
- Current mode pulse width modulator
