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PM8800A - Integrated IEEE 802.3af compliant PoE-PD interface and PWM controller

General Description

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.

Key Features

  • 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.
  • Programmable oscillator.

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Datasheet Details

Part number PM8800A
Manufacturer STMicroelectronics
File Size 517.92 KB
Description Integrated IEEE 802.3af compliant PoE-PD interface and PWM controller
Datasheet download datasheet PM8800A Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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PM8800A Integrated IEEE 802.3af compliant PoE-PD interface and PWM controller with support of external source Features ■ 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 ■ Programmable oscillator frequency ■ Programmable soft-start ■ Power good indication ■ 80 % maximum duty cycle with internal slope compensation ■ Supports both isolated and non-isolated Applications.