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Monolithic Power Systems Inc. MP8009GV-Z
- Part No.:
- MP8009GV-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Power Over Ethernet (PoE) Controllers
- Package:
- 28-VFQFN Exposed Pad
- Datasheet:
-
MP8009GV-Z.pdf
- Description:
- FULLY INTEGRATED, 802.3AF/AT-COM
- Quantity:
- Payment:
- Shipping:
Inventory:2,138
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Product details
Overview
MP8009GV-Z from Monolithic Power Systems is a fully integrated IEEE 802.3af/at compliant powered device (PD) interface with embedded flyback/forward controller. It delivers 100V hot-swap MOSFET (0.48Ω RON), 120mA inrush current limit, 840mA operation current limit, and supports both primary-side regulation (PSR) and secondary-side regulation (SSR) topologies for PoE-powered security cameras and WLAN access points.
For engineers reviewing the MP8009GV-Z datasheet, MP8009GV-Z pinout, MP8009GV-Z application, or MP8009GV-Z equivalent, this device enables compact, high-efficiency isolated DC/DC conversion in PoE PD front-ends with minimal external components, precise OVP without isolated sensing, and flexible topology selection via MODE/Sense pin configuration.
Technical Context
The MP8009GV-Z integrates dual-domain control: an IEEE 802.3af/at PD interface with detection, classification (up to Class 4), 1-event/2-event support, and 100V/0.48Ω integrated pass switch; and a hybrid-mode controller supporting PSR flyback (250kHz fixed frequency, 160mV current-sense threshold) and SSR active-clamp forward (with QG-based OVP design).
Its architecture separates power path (VDD–VSS referenced) from signal domain (GND-referenced), enforces strict UVLO thresholds (37.5V turn-on, 31V turn-off), implements hiccup-mode protection for OLP/SCP/OVP/thermal shutdown, and uses internal LDO for VCC generation (8.5V regulated) with optional external VCC biasing to reduce losses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IEEE Compliance | Fully compliant with 802.3af and 802.3at standards including detection, classification, and inrush control. |
| PD Pass Switch | Integrated 100V, 0.48Ω N-channel MOSFET enabling single-chip hot-swap functionality without external FET. |
| Inrush / Op Current Limit | 120mA inrush limit prevents surge damage; 840mA operational limit ensures stable Class 4 power delivery under load. |
| Controller Topology Support | PSR flyback (primary-side regulation) and SSR active-clamp forward - selectable via MODE pin configuration. |
| Switching Frequency | 250kHz fixed frequency with frequency dithering for EMI reduction in both PSR and SSR modes. |
| OVP Accuracy | 125% ±5% VREF (2.0V) OVP threshold with hiccup recovery; supports active-clamp forward OVP without optocoupler or isolated sensing. |
| Package | QFN-28 (4mm × 5mm) with exposed thermal pad connected to RTN/VSS for enhanced thermal dissipation. |
Pinout & Package
MP8009GV-Z is housed in a thermally enhanced QFN-28 (4mm × 5mm) package with an exposed pad tied to RTN/VSS. Pin functions are validated per official MPS datasheet Rev. 1.1 (2026), with NC pins recommended to be grounded for noise immunity and thermal stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DET | Detection input | Connects to 24.9kΩ resistor from VDD to initiate IEEE-compliant 2-point detection sequence. |
| CLASS | Classification current output | Sinks programmable classification current (e.g., 40.4mA typical with 28.7Ω) to identify PoE power class to PSE. |
| RTN / VSS | Hot-swap MOSFET source / negative PoE rail | RTN is drain of internal 100V MOSFET; VSS is PoE return - both must be shorted to GND for proper operation. |
| GATE / SYNC | Main / synchronous MOSFET drivers | GATE drives primary FET (2A source/sink); SYNC drives synchronous rectifier (0.8A/1.2A) in forward mode with QG constraints. |
| FB / COMP / SENSE | Voltage feedback / error amp / current sense | FB sets OVP and regulates output in PSR; COMP provides EA output; SENSE sets dither, compensation, and current threshold. |
| PG / T2P / AUX | Power good / Type-2 indicator / adapter detect | PG enables DC/DC when >2.0V; T2P open-drain indicates Type-2 PSE or wall adapter; AUX enables auxiliary supply mode when VDD–AUX > 2.3V. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 100V Hot-Swap Switch | Eliminates need for external high-voltage MOSFET and gate driver, reducing BOM count and board area in PoE PD designs. |
| Topology Flexibility (PSR/SSR) | Single IC supports cost-optimized PSR flyback and high-efficiency SSR forward - selected by MODE pin voltage level (floating = PSR, GND = SSR). |
| Accurate Active-Clamp Forward OVP | OVP triggers at 125% VREF without optocoupler or isolated sensing - enabled by proper N/P-channel MOSFET QG selection per datasheet guidance. |
| Hiccup-Mode Protection Suite | Independent hiccup timers for overload (4.8ms on / 340ms off), short-circuit, over-voltage, and thermal shutdown (150°C trip, 20°C hysteresis). |
| EMI Reduction via Frequency Dithering | Internal dithering spreads switching spectrum around 250kHz center frequency, easing compliance with CISPR-32 Class B conducted/radiated limits. |
Applications
| Security Cameras | WLAN Access Points |
|---|---|
|
Use Scenario: Indoor/outdoor IP cameras powered via Cat5e/6 Ethernet with remote firmware updates and video streaming. IC Role / Device Role / Timing Role: PD interface manages PoE negotiation and power handoff; flyback controller delivers stable 12V/2.1A output with <±1% load regulation. Use Value: Enables compact, fanless camera enclosure design with 85% peak efficiency at 48V input and full-load operation up to +125°C junction temperature. |
Use Scenario: Dual-band 802.11ac/ax access points deployed in enterprise ceilings with centralized PoE switches. IC Role / Device Role / Timing Role: Acts as front-end PD + isolated DC/DC converter; SSR forward mode supports higher power density and lower transformer loss than flyback. Use Value: Delivers 24V/1.5A output with <30mV line regulation across 36–57V PoE input range, meeting EN 62368-1 safety isolation requirements. |
| Video Telephones | IoT Gateways |
|
Use Scenario: HD video conferencing phones requiring low-noise power for image sensor and audio codec subsystems. IC Role / Device Role / Timing Role: PSR flyback configuration minimizes component count; PG signal synchronizes system power-up sequence with PoE handshake completion. Use Value: Achieves <15mVpp output ripple at 12V/1A with integrated frequency dithering, eliminating need for post-regulation LDOs in analog signal chains. |
Use Scenario: Industrial IoT edge gateways aggregating Modbus, CAN, and BLE sensors with remote diagnostics and OTA updates. IC Role / Device Role / Timing Role: Dual-input capability (PoE + auxiliary adapter) ensures continuous operation during network maintenance or cable faults. Use Value: AUX pin detection enables seamless switchover to wall adapter (<8.5V threshold) with <500μs PG delay, maintaining real-time data logging without interruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PoE PD interface with integrated controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT4275AIMSE#PBF | Standalone IEEE 802.3af/at PD interface only - requires external flyback controller (e.g., LT3748) and optocoupler feedback. | Lacks integrated controller; suitable for designs needing discrete control loop tuning or legacy flyback IC reuse. | Select when topology flexibility or opto-based regulation is preferred over monolithic integration. |
| TPS23754PWPR | 802.3af-only PD interface with integrated PWM controller - no 802.3at support, no SSR forward mode, fixed 275kHz frequency. | Supports only Class 0–3 (≤15.4W); lacks PSR/SSR mode selection and active-clamp forward OVP capability. | Choose for cost-sensitive 802.3af-only systems where 30W+ power and advanced topology features are unnecessary. |
Compared with LT4275AIMSE#PBF and TPS23754PWPR, MP8009GV-Z uniquely combines full 802.3at compliance, integrated PSR/SSR controller, and auxiliary adapter detection in one QFN-28 package - reducing total solution size by ≥40% and eliminating external feedback components required by alternatives.
Availability
MP8009GV-Z is available at Aetrix Electronics and suitable for IEEE 802.3af/at PoE-powered security cameras, WLAN access points, and industrial IoT gateways requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.
Supply support for MP8009GV-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 two decades of leadership in DC/DC converters, PoE solutions, and motor drivers.
The MP8009 product line targets space-constrained, high-reliability PoE PD applications - designed to replace multi-chip front-ends with a single IC that meets full 802.3at Class 4 power delivery while simplifying safety certification and thermal design.
FAQ
What is the maximum PoE input voltage supported by MP8009GV-Z?
The MP8009GV-Z supports PoE input voltages from 36V to 57V per IEEE 802.3at specification, with absolute maximum VDD–VSS rating of 100V. Its UVLO turn-on threshold is 37.5V (typical), and turn-off threshold is 31V (typical), ensuring reliable startup and holdover across standard PoE PSE outputs.
How does the MP8009GV-Z implement over-voltage protection without isolated sensing in active-clamp forward mode?
In active-clamp forward mode, MP8009GV-Z derives OVP from VCC voltage using internal circuitry calibrated to 125% of the 2.0V reference. This eliminates need for optocouplers or auxiliary windings - provided the forward transformer's turns ratio and clamp MOSFET QG meet datasheet-specified minimums (≥17.5nC for N-channel, ≥5nC for P-channel).
Can MP8009GV-Z operate with both PoE and auxiliary wall adapter simultaneously?
No - MP8009GV-Z implements priority-based input selection. When VDD–AUX > 2.3V, it disables the hot-swap MOSFET and CLASS functions, forcing T2P and PG active to indicate auxiliary mode. The device does not support concurrent PoE and adapter operation; external OR-ing circuitry is required for true redundancy.
What is the purpose of the SENSE pin beyond current sensing?
The SENSE pin serves three verified functions: (1) primary current sensing for PWM control (160mV threshold), (2) setting output voltage compensation slope via resistor-to-GND connection, and (3) enabling frequency dithering by applying specific voltage levels (0.15–2.2V) per Table 3 in the datasheet - all confirmed in electrical characteristics and typical performance sections.
Is the QFN-28 package lead-free and RoHS-compliant?
Yes - MP8009GV-Z is lead-free, halogen-free, and fully compliant with EU RoHS Directive 2011/65/EU. MPS confirms green status on its Quality Assurance webpage, and the device carries no exemptions for lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE substances.
How does the PG pin interact with the DC/DC converter enable logic?
The PG pin acts as an internal enable signal: when PG voltage exceeds 2.0V (typical), the DC/DC controller begins switching; below 1.93V, switching stops. A 500μs delay exists between PG assertion and first GATE pulse, allowing VCC stabilization. PG is pulled high internally and sinks ≤0.4mA when low.
What are the minimum external components required for basic PSR flyback operation?
A functional PSR flyback implementation requires: (1) 24.9kΩ DET resistor, (2) 28.7Ω CLASS resistor, (3) 1µF VCC bypass capacitor, (4) FB voltage divider (e.g., 100kΩ/20kΩ), (5) current-sense resistor (e.g., 0.1Ω), and (6) transformer with auxiliary winding for PSR feedback - all validated in the Typical Application schematic on page 2 of the datasheet.
MP8009GV-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MP
- Package/Case:
- 28-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Controller (PD), DC/DC
- Number of Channels:
- 1
- Power - Max:
- -
- Internal Switch(s):
- No
- Auxiliary Sense:
- Yes
- Standards:
- 802.3at (PoE+), 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)
MP8009GV-Z FAQ
1.How can I place an order for MP8009GV-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP8009GV-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 MP8009GV-Z reliable?
The price and inventory of MP8009GV-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP8009GV-Z is usually 5 days.
3.What payment methods are accepted for MP8009GV-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP8009GV-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP8009GV-Z?
MP8009GV-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP8009GV-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 MP8009GV-Z?
For technical support, including MP8009GV-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP8009GV-Z requirements.
6.How does Aetrix verify that MP8009GV-Z is sourced from the original manufacturer or authorized distributors?
All MP8009GV-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 MP8009GV-Z meets industry standards.
7.What is the process for return or replacement of MP8009GV-Z?
All MP8009GV-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP8009GV-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 MP8009GV-Z part is unused and in its original packaging.
Return procedure for MP8009GV-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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