IEEE 802.3af/at High Power PoE PD Interface with AUX Control

Learn about our Evaluation Kit
Talk to an Engineer or get a Quote
Upgrade to myMPS+

Product Description

The MP8003A is an IEEE, 802.3af/at, Power over Ethernet (PoE) compliant, powered device (PD), interface controller. The MP8003A has all the functions of IEEE 802.3af/at, including detection, 1-event and 2-event classification, input current control, and a 100V hot-swap MOSFET. The MP8003A sets the inrush current limit at about 120mA during start-up and switches to 840mA when the output pass MOSFET is turned on completely. A PG signal set to high indicates when the output is fully charged and pulls low when the output drops under the overload condition. The MP8003A also provides a T2P signal when it is connected to Type-2 power sourcing equipment (PSE). An auxiliary power input detector (AUX) provides a smooth power switch from PSE to an auxiliary wall adapter. The MP8003A also features built-in thermal protection and a wide-input UVLO hysteresis. The MP8003A is available in a QFN-10 (3mmx3mm) package.

Product Features

  • Compatible with 802.3af/at Specifications
  • 100V, 0.48O Integrated Pass Switch
  • 120mA Inrush Current Limit
  • 840mA Operation Current Limit
  • 2-Event Classification
  • Auxiliary Adapter O-Ring Power Supply
  • Self-Driving Power Good Inductor
  • Open-Drain Type-2 PSE Indicator
  • Over-Temperature Protection (OTP)
  • Available in QFN-10 (3mmx3mm) Package


  • GradeCatalog
  • PoE Standards Supported802.3af/at
  • PoE Ilimit (mA)840
  • PoE Inrush Limit (mA)120
  • Pass Switch Rds(on) (Ω)0.48
  • PackageQFN-10 (3x3)
  • Fault ResponseAuto Retry
  • Aux Supply Vrange (V)Dec-57

Evaluation Kit


Kit details

EV8003A-Q-00AEvaluation Board is designed to demonstrate the capability of MP8003A`s function. MP8003A is an IEEE 802.3af/at power-over-Ethernet (PoE) compliant powered device (PD) interface controller. It has all the functions of IEEE 802.3af/at.

MP8003A sets 120mA inrush current limit and 840mA operation current limit, a PG signal sets to high to indicate output fully charged, and it pulls low when Vout drops in overload condition. MP8003A also provides a T2P signal when it is connected to a type 2 power sourcing equipment (PSE).

An AUX pin of MP8003A provides smoothly power switch from PSE to auxiliary wall adaptor. MP8003A also features built in thermal protection and wide input VULO hysteresis.

The MP8003A is available in a 10-pin QFN (3mm×3mm) package.

$25.00 + tax