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MP8009 Fully Integrated QFN-28
The MPS MP8009 is a Fully Integrated. It switches at 250 kHz. It is supplied in a QFN-28 package.
The MP8009 is an integrated IEEE 802.3af/at PoE compliant powered device (PD) power supply converter.
Key Specifications
| Part Number | MP8009 |
| Function | Fully Integrated |
| Switching Frequency | 250 kHz |
| Package | QFN-28 |
| Ordering Codes | MP8009 |
Features
- Compatible with 802.3af/at Specifications
- 100V, 0.48Ω PD Integrated Pass Switch
- 120mA PD Inrush Current
- 840mA PD Operation Current Limit
- Supports >8.5V Auxiliary Adapter Supply
- 2A GATE and 0.8A SYNC Drivers
- 160mV Switching Current-Sense Limit
- Output Diode Compensation in PSR Mode
- 250kHz Fixed Switching Frequency
- EMI Reduction with Frequency Dithering
Typical Application Circuit
Applications
- IEEE 802.3af/at-Compliant Devices
- Security Cameras
- Video Telephones
- 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
Which package and ordering codes apply to the MP8009?
QFN-28; order codes include MP8009.
What are the defining features of the MP8009?
Compatible with 802.3af/at Specifications 100V, 0.48Ω PD Integrated Pass Switch
Shenzhen Gaorunxin Technology Co., Ltd
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