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Monolithic Power Systems Inc. MP8009AGV-Z
- Part No.:
- MP8009AGV-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Power Over Ethernet (PoE) Controllers
- Package:
- 28-VFQFN Exposed Pad
- Datasheet:
-
MP8009AGV-Z.pdf
- Description:
- 19A, 600KHZ, 22V OUTPUT RANGE, S
- Quantity:
- Payment:
- Shipping:
Inventory:4,187
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Product details
Overview
MP8009AGV-Z from Monolithic Power Systems is an IEEE 802.3af/at-compliant Power over Ethernet (PoE) powered device (PD) interface with integrated flyback/forward controller, featuring a 100V/0.48Ω hot-swap MOSFET, 120mA inrush current limit, 840mA operational current limit, and 32ms soft-start time. It delivers isolated DC/DC conversion for security cameras, WLAN access points, and IoT endpoints requiring single-chip PoE front-end integration.
For engineers reviewing the MP8009AGV-Z datasheet, MP8009AGV-Z pinout, MP8009AGV-Z application, or MP8009AGV-Z equivalent, this IC supports dual-mode regulation (PSR and SSR), includes comprehensive protection (OLP/SCP/OVP/hiccup), operates at 250kHz fixed frequency with dithering, and targets designs needing auxiliary adapter support (>8.5V) and Type-2 PSE detection.
Technical Context
The MP8009AGV-Z integrates two functional blocks: a full-featured IEEE 802.3af/at PD interface with detection, classification, and hot-swap control, and a flexible flyback/forward controller supporting both primary-side regulation (PSR) and secondary-side regulation (SSR) topologies. Its MODE pin selects regulation mode and dead-time between GATE and SYNC outputs.
It implements real-time protections including hiccup-mode OLP, SCP, and OVP, with thermal shutdown at 150°C and 20°C hysteresis. The SENSE pin sets frequency dithering and output voltage compensation via resistor networks, while FB provides 2.0V reference with ±0.03V tolerance over temperature and monitors OVP at 125% of VREF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IEEE Compliance | Fully compliant with 802.3af and 802.3at standards for detection, classification, and power delivery up to 30W. |
| Hot-Swap MOSFET | Integrated 100V, 0.48Ω N-channel MOSFET enables robust inrush limiting and safe hot-plug operation. |
| Inrush & Operational Limits | 120mA inrush current limit (ILIMIT_INRUSH); 840mA operational current limit (ILIMIT) ensures stable startup and sustained load handling. |
| Regulation Flexibility | Supports PSR for cost-sensitive flyback, SSR for high-accuracy flyback, and active-clamp forward topologies via MODE pin configuration. |
| Switching & Protection | 250kHz fixed-frequency PWM with frequency dithering; hiccup-mode OLP/SCP/OVP with 340ms off-time prevents latch-up during faults. |
| Soft-Start & Timing | 32ms internal soft-start (tSS) reduces stress on input capacitors and transformer core during power-up. |
| Package | QFN-28 (4mm × 5mm) with exposed thermal pad connected to RTN/VSS for enhanced thermal dissipation. |
Pinout & Package
MP8009AGV-Z uses a QFN-28 (4mm × 5mm) package with wettable flanks and an exposed thermal pad tied to RTN/VSS pins for thermal management. Pin 1 is top-left corner (NC), and pin numbering follows standard counter-clockwise layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 2 (AUX) | Auxiliary power detection input | Detects wall adapter presence when VAUX is pulled 2.3V below VDD; disables classification and forces T2P/PG assertion. |
| 3 (DET) | PoE detection node | Connects to 24.9kΩ resistor to VDD to enable IEEE-compliant 2-point detection sequence. |
| 4 (VDD) | Main PoE input supply rail | Accepts 35–57V PoE input; UVLO rising threshold at 37.5V ensures reliable turn-on after valid detection/classification. |
| 8 (MODE) | Topology selection & dead-time control | Float for PSR; connect to GND via resistor for SSR; also configures GATE–SYNC dead time for synchronous rectification. |
| 13 (SYNC) | Synchronous rectifier gate driver | 0.8A source / 1.2A sink capability drives external SR MOSFET in SSR topologies with precise timing control. |
| 15 (GATE) | Main power switch gate driver | 2A source / 1.7A sink drive strength supports fast switching of primary-side MOSFETs in flyback/forward converters. |
| 17 (VCC) | Internal LDO supply | Powered by internal LDO from VDD; requires ≥1µF bypass capacitor (4.7µF for forward) to stabilize control circuitry. |
| 20,21 (RTN) | Hot-swap MOSFET drain terminal | High-current return path for PoE input; must be shorted to GND and thermally connected to exposed pad. |
| 23,24 (VSS) | PoE input negative rail | Reference for VDD, DET, CLASS, T2P; connects to PoE transformer center-tap or bridge rectifier output negative. |
| 26 (CLASS) | Classification current setting | Resistor to VSS sets ICLASS (e.g., 28.7Ω → 40.4mA Class 3); enables interoperability with 802.3af/at PSEs. |
| 28 (T2P) | Type-2 PSE indicator | Open-drain output pulled low to VSS when Type-2 PSE or wall adapter is detected; used for system-level power source awareness. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated PoE PD Interface | Full 802.3af/at compliance with detection, dual-event classification, 120mA/840mA current limits, and 100V hot-swap FET eliminates discrete PD front-end components. |
| Dual-Mode Controller Architecture | Configurable PSR (no optocoupler) or SSR (high-accuracy regulation) operation via MODE pin, enabling optimal BOM trade-offs per application. |
| Robust Protection Suite | Hiccup-mode OLP/SCP/OVP with 340ms recovery delay prevents thermal runaway and enables automatic fault recovery without system reset. |
| Adapter-Aware Power Management | AUX pin enables seamless transition between PoE and wall adapter inputs, supporting >8.5V auxiliary supplies and automatic source arbitration. |
| EMI-Optimized Switching | 250kHz fixed frequency with built-in frequency dithering reduces peak EMI emissions without external spread-spectrum circuitry. |
Applications
| Security Cameras | WLAN Access Points |
|---|---|
Use Scenario: Indoor/outdoor IP cameras powered via Cat5e/Cat6 cabling in enterprise or smart home deployments. IC Role / Device Role / Timing Role: Primary PoE PD interface and isolated DC/DC controller delivering regulated 12V/2.1A output with PSR-based flyback topology. Use Value: Eliminates need for external PD controller + separate DC/DC IC, reducing board area by >40% and enabling compact 2-layer PCB designs. |
Use Scenario: Dual-band 802.11ac/ax access points deployed in offices, campuses, or retail environments. IC Role / Device Role / Timing Role: Powers RF front-end, baseband processor, and PHY with tight line/load regulation (<±3%) across 42–57V PoE input range. Use Value: Maintains stable 5V/3.3V rails under dynamic Wi-Fi traffic loads using SSR feedback for <1% output deviation. |
| IoT Gateways | Video Telephones |
Use Scenario: Edge gateways aggregating Zigbee, BLE, and LoRa sensor data with Ethernet backhaul. IC Role / Device Role / Timing Role: Provides isolated 5V/1A and 3.3V/0.5A rails using active-clamp forward topology with SYNC-driven synchronous rectification. Use Value: Achieves >88% efficiency at full load with 250kHz switching, minimizing heat generation in sealed enclosures. |
Use Scenario: VoIP video phones requiring PoE power and clean, low-noise analog audio supply rails. IC Role / Device Role / Timing Role: Delivers ultra-low-noise 3.3V for codec and 1.8V for SoC core using PSR flyback with 32ms soft-start to prevent audio pop. Use Value: Soft-start suppresses inrush-induced voltage sag on shared PoE switches, avoiding call drop during boot. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PoE PD interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT4275AIMSE#PBF | Standalone IEEE 802.3af/at PD interface only; no integrated DC/DC controller - requires external flyback IC and optocoupler. | Used where design flexibility or legacy controller reuse is prioritized over integration; lacks AUX/adapter support. | Select when upgrading existing non-PoE systems with minimal change to power stage, or when higher isolation creepage is required. |
| TPS23754PWPR | 802.3af-only PD interface with integrated DC/DC controller; no 802.3at support, lower 600mA ILIMIT, and no SSR mode. | Suitable for legacy 15.4W PoE devices; cannot support Type 2 (30W) PSEs or advanced regulation modes like SSR. | Choose only for cost-sensitive 802.3af-only applications where 30W capability and multi-topology support are unnecessary. |
Compared with LT4275AIMSE#PBF and TPS23754PWPR, MP8009AGV-Z uniquely combines full 802.3af/at compliance, dual-mode (PSR/SSR) controller integration, auxiliary adapter detection, and 30W capability in one QFN-28 package - reducing total BOM count by up to 7 components versus discrete solutions.
Availability
MP8009AGV-Z is available at Aetrix Electronics and suitable for security cameras, WLAN access points, and IoT gateways requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for MP8009AGV-Z 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 power management ICs, with over 20 years of leadership in DC/DC converters, PoE solutions, and motor drivers.
The MP8009A belongs to MPS's PoE PD interface product line, designed specifically to consolidate IEEE-compliant detection, classification, hot-swap control, and isolated DC/DC regulation into a single chip for space-constrained, high-efficiency edge devices.
FAQ
What is the maximum input voltage supported by MP8009AGV-Z?
The MP8009AGV-Z supports a PoE input voltage range of 35V to 57V, with absolute maximum rating of 100V on VDD, VRTN, DET, T2P, and AUX pins relative to VSS. Its VDD UVLO rising threshold is 37.5V, ensuring reliable operation after valid 802.3af/at detection and classification sequences.
Does MP8009AGV-Z support both flyback and forward converter topologies?
Yes - MP8009AGV-Z supports flyback via primary-side regulation (PSR) or secondary-side regulation (SSR), and active-clamp forward via SSR. The MODE pin selects topology: floating for PSR, resistor-to-GND for SSR. SYNC pin drives synchronous rectifiers in both SSR configurations.
How does the AUX pin enable wall adapter fallback functionality?
The AUX pin detects auxiliary power by monitoring voltage difference from VDD. When VAUX is pulled 2.3V below VDD, the IC disables PoE classification, asserts T2P and PG, and enables DC/DC operation from the adapter - allowing seamless switchover without firmware intervention or external logic.
What protection features are implemented with hiccup mode?
Overload protection (OLP), short-circuit protection (SCP), and over-voltage protection (OVP) all operate in hiccup mode: after fault detection, the IC shuts down for 340ms, then attempts restart. This prevents thermal damage during sustained overload while enabling autonomous recovery without system-level reset.
Can MP8009AGV-Z be used in Type 2 (802.3at) PoE applications?
Yes - MP8009AGV-Z is fully IEEE 802.3at-compliant, supporting dual-event classification up to Class 4 (30W). Its 840mA operational current limit, 100V hot-swap MOSFET, and T2P pin for Type-2 PSE indication ensure interoperability with all 802.3at PSEs, including midspans and endspans.
What is the purpose of the SENSE pin beyond current sensing?
Beyond primary current sensing, the SENSE pin sets output voltage compensation slope and enables frequency dithering via resistor networks to GND. RSENSE and RREG values configure VOUT compensation for improved cross-regulation and reduce EMI peaks without external circuitry.
Is thermal pad connection mandatory for MP8009AGV-Z?
Yes - the exposed thermal pad must be soldered and electrically connected to RTN and VSS pins. This path conducts >80% of die heat to the PCB ground plane. Failure to connect it risks junction temperature exceeding 150°C under full load, triggering thermal shutdown.
MP8009AGV-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 28-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Controller (PD)
- Number of Channels:
- 1
- Power - Max:
- -
- Internal Switch(s):
- Yes
- Auxiliary Sense:
- Yes
- Standards:
- 802.3af (PoE)
- Voltage - Supply:
- 0V ~ 57V
- Current - Supply:
- 450µA
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-QFN (4x5)
MP8009AGV-Z FAQ
1.How can I place an order for MP8009AGV-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP8009AGV-Z on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MP8009AGV-Z reliable?
The price and inventory of MP8009AGV-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP8009AGV-Z is usually 5 days.
3.What payment methods are accepted for MP8009AGV-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP8009AGV-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP8009AGV-Z?
MP8009AGV-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP8009AGV-Z order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MP8009AGV-Z?
For technical support, including MP8009AGV-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP8009AGV-Z requirements.
6.How does Aetrix verify that MP8009AGV-Z is sourced from the original manufacturer or authorized distributors?
All MP8009AGV-Z products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MP8009AGV-Z meets industry standards.
7.What is the process for return or replacement of MP8009AGV-Z?
All MP8009AGV-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP8009AGV-Z, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MP8009AGV-Z part is unused and in its original packaging.
Return procedure for MP8009AGV-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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