Monolithic Power Systems Inc. MP8007GV-P

Overview

MP8007GV-P from Monolithic Power Systems is a fully integrated IEEE 802.3af-compliant PoE Powered Device (PD) interface with primary-side regulated flyback or buck DC-DC converter, delivering up to 13W output power. It integrates a 100V/0.48Ω hot-swap MOSFET, supports 120mA inrush and 840mA operational current limiting, and features primary-side regulation without opto-coupler feedback for isolated designs or low-side buck for non-isolated applications - used in security cameras, VoIP phones, and WLAN access points.

For engineers reviewing the MP8007GV-P datasheet, MP8007GV-P pinout, MP8007GV-P application, or MP8007GV-P equivalent, key selection criteria include IEEE 802.3af detection/classification compliance, dual-mode (flyback/buck) topology support, 180V internal switching MOSFET rating, thermal shutdown at 150°C, and QFN-28 package compatibility with PCB thermal management requirements.

Technical Context

The MP8007GV-P implements a dual-stage power management architecture: its PD interface performs full 802.3af detection (1.9–11V threshold), classification (up to Class 4 via 2-event protocol), and inrush control, while its DC-DC controller operates in variable-frequency DCM with fixed peak-current modulation. The device supports mode selection via MODE pin (GND = flyback, floating = buck) and uses separate feedback paths: FB1 for flyback (referenced to GND) and FB2 for buck (referenced to VDD).

Protection logic is tightly coupled across domains: RTN voltage sensing triggers current fold-back (10V threshold), PG assertion depends on both RTN ≥1.2V and TDELAY ≥80ms, and thermal shutdown (150°C/20°C hysteresis) disables both PD switch and DC-DC converter. Auxiliary power detection via AUX pin enables seamless wall-adapter fallback when VDD–VAUX exceeds –2.3V.

Key Specifications

Pinout & Package

MP8007GV-P is housed in a thermally enhanced QFN-28 package (4mm × 5mm, 0.5mm pitch) with exposed thermal pad connected to RTN/GND for efficient heat dissipation. Pin functions are validated per Monolithic Power Systems MP8007 Rev.1.0 datasheet (June 2016).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PoE PD interface applications.

Compared with LT4275AIMSE#PBF and TPS23753APWR, MP8007GV-P uniquely combines dual-topology DC-DC control, primary-side regulation, and wall-adapter ORing in one QFN-28 package - reducing total solution size by ~35% and eliminating three external ICs typically needed in competitive implementations.

Availability

MP8007GV-P is available at Aetrix Electronics and suitable for security camera deployments, VoIP endpoint manufacturing, and WLAN access point production requiring stable component supply and long-term lifecycle assurance.

Supply support for MP8007GV-P includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance analog and power ICs, with core expertise in DC-DC conversion, motor drivers, and PoE solutions.

The MP8007 belongs to MPS's PoE PD interface product line, engineered to simplify IEEE 802.3af-compliant power delivery for edge-connected devices - emphasizing integration, thermal efficiency, and topology flexibility.

FAQ

What is the maximum input voltage the MP8007GV-P can withstand on the VDD pin?

The absolute maximum rating for VDD with respect to VSS is +100V, but the recommended operating range is 0V to 57V. Operation above 57V risks exceeding the 100V hot-swap MOSFET breakdown voltage and violates the IEEE 802.3af specification's 57V maximum PSE output. Sustained exposure beyond 57V may cause irreversible damage even if below 100V.

Can the MP8007GV-P support IEEE 802.3at (PoE+) power levels?

No. While the PD interface supports 2-event classification compatible with 802.3at PSEs, the integrated DC-DC converter is rated for 13W maximum output - matching only 802.3af Class 3 (12.95W). Attempting to draw >13W will trigger overcurrent protection or thermal shutdown, making it unsuitable for full 802.3at (25.5W) applications.

How does the AUX pin enable wall-adapter fallback?

The AUX pin compares VDD–VAUX against an internal –2.3V reference. When VAUX drops sufficiently (e.g., PSE failure), VDD–VAUX exceeds –2.3V, causing the IC to disable the hot-swap MOSFET, deactivate CLASS functionality, assert PG, and activate T2P - enabling immediate power transfer from the wall adapter without host MCU involvement.

What is the purpose of the T2P pin, and when does it assert?

T2P is an open-drain indicator that pulls low when a Type-2 PSE is detected or when AUX is activated. It remains inactive (high-impedance) during standard 802.3af operation. This signal allows the host system to dynamically adjust power budgeting or select higher-performance peripherals when >13W capability is confirmed.

Is the MP8007GV-P RoHS and halogen-free compliant?

Yes. Per Monolithic Power Systems documentation, all MP8007 variants are lead-free, halogen-free, and fully compliant with the EU RoHS directive. The QFN-28 package uses matte tin plating, and material declarations are available through MPS's Quality Assurance portal.

What thermal derating applies above 25°C ambient?

With θJA = 40°C/W, the MP8007GV-P dissipates up to 3.12W at TA = 25°C. For every 1°C rise in ambient temperature, allowable power decreases by 78mW (3.12W ÷ 40°C). At TA = 70°C, maximum continuous power drops to ~1.5W - requiring careful thermal design or derated output in enclosed environments.