MP8007 Fully-Integrated 802.3af-Compatible PoE PD Interface QFN-28

MP8007 Fully-Integrated 802.3af-Compatible PoE PD Interface QFN-28

The MP8007 is an integrated IEEE 802.3af compatible PoE Powered Device with PD interface and power converter.

Key Specifications

Features

• Compatible with 802.3af Specifications
• Support 13W PoE Power Application
• 100V 0.48Ω PD Integrated Pass Switch
• 120mA PD Inrush Current
• 840mA PD Operation Current Limit
• Auxiliary Adaptor ORing Power Supply
• Integrated 180V Switching Power MOSFET
• Supports Primary-Side Regulated Flyback without Opto-Coupler Feedback
• Supports Low-side Switch Buck Converter
• Up to 3A Programmable Switching Current Limit

Typical Application Circuit

Applications

• IEEE 802.3af-Compliant Devices
• Security Camera
• VoIP Phones
• WLAN Access Points

Design Notes

• Rail sequencing order and delay are part of the SoC power-up contract; a wrong order latches the processor even though every rail is in spec.
• In multiphase designs, current balance depends on the loop matching between phases, so keep the layout symmetric.
• Digital interfaces (PMBus, I²C) need pull-ups to the correct rail and a defined state during power-up.
• Thermal design is a system problem here: the PMIC sits next to the load it feeds, so budget the shared copper, not the package alone.

Common Questions