The PM8800A is a product that integrates an IEEE 802.3af compliant PoE-PD interface and PWM controller. It can be powered from Ethernet LAN cables or local auxiliary sources. The product features a high voltage start-up bias regulator, thermal shutdown protection, current mode pulse width modulator, and more. It is suitable for various applications such as VoIP phones, WLAN access points, security cameras, PoE powered devices, etc.
The PM8800A integrates an IEEE 802.3af-compliant PoE interface and a current-mode PWM controller. It includes detection, classification, UVLO, in-rush current limitation, an integrated 100 V hot-swap MOSFET, a high-voltage start-up bias regulator, and an HTSSOP16 package.
The document provides application circuits and block diagrams, pin descriptions and thermal data, absolute maximum ratings, electrical characteristics, and descriptions of the PD interface and PWM sections, auxiliary sources, package mechanical data and revision history.
| IEEE 802.3af compliance | IEEE 802.3af compliant PD interface |
|---|---|
| Integrated hot-swap MOSFET | 100 V, 0.5 Ω, 800 mA |
| Maximum duty cycle | 80 % |
| Package | HTSSOP16 |
| Maximum junction temperature | 150 °C |
| Operating temperature range | -40 to 85 °C |
| Absolute maximum VIN, GND to VSS | -0.3 to 100 V |
It includes detection, classification, under-voltage lockout and in-rush current limitation.
The PM8800A is available in an HTSSOP16 package.
The maximum duty cycle is 80 % with internal slope compensation.
Yes; it works with power supplied from Ethernet LAN cables or from local auxiliary sources.