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Monolithic Power Systems Inc. MPM3509GQVE-AEC1-Z
- Part No.:
- MPM3509GQVE-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 17-PowerLQFN Module
- Datasheet:
-
MPM3509GQVE-AEC1-Z.pdf
- Description:
- DC DC CONVERTER 0.8-30V
- Quantity:
- Payment:
- Shipping:
Inventory:1,985
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Product details
Overview
MPM3509GQVE-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, synchronous step-down DC/DC power module integrating MOSFETs, inductor, and input/output capacitors in a QFN-17 (3mm×5mm×1.6mm) wettable flank package. It delivers 0.9A continuous output current across a 4V–36V input range, operates at a fixed 2.2MHz switching frequency with frequency foldback above 21V, and features power-good indication, valley-current OCP with hiccup mode, and thermal shutdown - deployed in automotive ADAS camera modules requiring compact, EMI-compliant 3.3V/5V rails.
For engineers reviewing the MPM3509GQVE-AEC1-Z datasheet, MPM3509GQVE-AEC1-Z pinout, MPM3509GQVE-AEC1-Z application, or MPM3509GQVE-AEC1-Z equivalent, key selection criteria include its integrated inductor architecture, CISPR25 Class 5 radiated emissions compliance, forced CCM operation for low-light-load ripple, and EN/SYNC pin dual functionality for enable control or external clock synchronization.
Technical Context
The MPM3509GQVE-AEC1-Z implements peak-current-mode control with internal compensation, fixed 2.2MHz nominal switching frequency (450kHz–2.2MHz sync-capable), and frequency foldback to 1.1MHz during high-VIN, soft-start, or short-circuit conditions. Its valley-current detection OCP uses cycle-by-cycle limiting plus hiccup recovery to limit average short-circuit current.
It integrates a 4.8V internal LDO regulator (VCC) with built-in decoupling, bootstrap capacitor, and wettable flank QFN-17 package optimized for automotive reflow inspection. The device operates in forced CCM across 0–0.9A load, ensuring stable frequency and predictable EMI behavior without mode transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 36V - supports full automotive battery range including cold-crank (4.5V) and load-dump (36V) transients. |
| Output Current | 0.9A continuous - sufficient for powering image sensors, microcontrollers, and CAN transceivers in automotive ECUs. |
| Switching Frequency | Fixed 2.2MHz (±200kHz) - enables use of small external components and avoids AM radio band; foldbacks to 1.1MHz above ~21V. |
| Feedback Reference | 0.807V ±13mV - sets output voltage via external resistor divider; supports adjustable VOUT from 0.8V to VIN×0.85. |
| Power Good Threshold | PG asserts when VOUT ≥ 0.83×VFB, deasserts at ≤0.78×VFB - provides accurate ±5% windowed monitoring for system sequencing. |
| Thermal Shutdown | Activates at 170°C junction, recovers at ~150°C - protects against sustained overload or poor PCB heatsinking in enclosed automotive housings. |
| CISPR25 Compliance | Class 5 radiated emissions - verified with EMI filters per Figure 12; meets stringent automotive EMC requirements without added shielding. |
Pinout & Package
MPM3509GQVE-AEC1-Z is housed in a wettable flank QFN-17 package (3mm × 5mm × 1.6mm) with exposed thermal pad on underside for enhanced thermal performance and solder-joint inspection. Pin 17 (NC) must remain unconnected and floating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (PG) | Open-drain power-good indicator | Signals valid regulation; requires external pull-up; sinks 4mA at 0.4V for robust logic-level interfacing. |
| 2 (EN/SYNC) | Enable input / external clock sync | Pull ≥1.45V to enable; float or ground to disable; accepts 450kHz–2.2MHz external clock for EMI reduction. |
| 3 (FB) | Voltage feedback node | Connects to resistor divider tap; internal 0.807V reference; sensitive to noise - requires short, direct routing. |
| 4 (VCC) | Internal 4.8V LDO output | Self-decoupled; powers internal circuitry; no external capacitor needed; regulated over full VIN range. |
| 5 (AGND) | Analog ground reference | Internally tied to PGND; serves as reference for FB, PG, EN/SYNC; separate from high-current PGND paths. |
| 6–8, 12 (SW) | Switch node outputs | Internal connection points to integrated high-side MOSFET drain; require large copper pour for thermal dissipation. |
| 9–11 (OUT) | Regulated output terminals | Three parallel pins reduce IR drop and improve current sharing; connect directly to output capacitor and load. |
| 13 (BST) | Bootstrap supply node | Internally connected to integrated bootstrap capacitor; no external components required for standard operation. |
| 14–15 (PGND) | Power ground return | High-current return path for SW and OUT; requires dedicated low-inductance copper pour and multiple vias to thermal pad. |
| 16 (IN) | Main input supply | Accepts 4V–36V; requires low-ESR ceramic capacitor placed adjacent with wide traces and multiple vias to PGND. |
| 17 (NC) | No-connect terminal | Must be left floating; not internally bonded; violation risks mechanical stress or unintended coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated magnetics and passives | Reduces BOM count to only four external components (two resistors, two capacitors), eliminating inductor selection and layout sensitivity. |
| Forced Continuous Conduction Mode (CCM) | Maintains fixed 2.2MHz operation from zero to full 0.9A load, minimizing output ripple variation and simplifying EMI filter design. |
| Valley-current OCP with hiccup recovery | Detects low-side FET current minima during fault; enters periodic restart (hiccup) under dead short, limiting average power dissipation to <1W. |
| Wettable flank QFN-17 package | Enables automated optical inspection (AOI) of solder joints in automotive production; improves reliability verification vs. standard QFN. |
| CISPR25 Class 5 radiated emissions | Validated per ISO 11452-2 with specified EMI filter; eliminates need for external ferrites or shielded inductors in most automotive applications. |
Applications
| Automotive Camera Modules | ADAS Domain Controllers |
|---|---|
Use Scenario: Powering 3.3V image sensor and ISP in rear-view or surround-view cameras mounted in exterior housings. IC Role / Device Role / Timing Role: Primary point-of-load regulator converting 12V battery to clean, low-noise 3.3V rail with fast transient response to sensor burst modes. Use Value: Integrated inductor and 2.2MHz operation minimize board area; AEC-Q100 Grade 1 rating ensures operation from −40°C to +125°C ambient. |
Use Scenario: Generating 5V supply for CAN FD transceivers and microcontroller I/O in centralized ADAS domain controllers. IC Role / Device Role / Timing Role: High-reliability buck converter delivering stable 5V/0.9A with PG signaling for safe boot sequencing and fault reporting. Use Value: Power-good window (±5%) and hiccup-mode OCP prevent bus lockup during cable shorts; wettable flank package supports automotive traceability. |
| Medical Imaging Sensors | Industrial Telematics Units |
Use Scenario: Providing 2.5V bias for CMOS X-ray detector arrays in portable diagnostic equipment. IC Role / Device Role / Timing Role: Low-ripple, low-EMI power source operating from wide-input 9–36V DC power supplies common in mobile medical carts. Use Value: Fixed-frequency CCM eliminates subharmonic noise; CISPR25 Class 5 compliance avoids interference with sensitive analog front-ends. |
Use Scenario: Supplying 1.8V core voltage to LTE/GNSS SoCs in fleet management telematics gateways installed in vehicle engine bays. IC Role / Device Role / Timing Role: Compact, thermally robust DC/DC stage supporting extended temperature operation and vibration-resistant mounting. Use Value: QFN-17 thermal pad and 1.6mm height enable conduction cooling in sealed enclosures; AEC-Q100 qualification validates long-term reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPM3610GQVE-AEC1-Z | Higher 1.5A output current, 2.2MHz fixed frequency, same QFN-17 package and AEC-Q100 Grade 1 rating. | Supports higher-power imaging processors or multi-rail systems where 0.9A is insufficient. | Select when >0.9A load current or higher thermal margin is required; pin-compatible but larger inductor increases solution size slightly. |
| TPS82084SILR | TI's 1A module with 2.2MHz switching, but rated only to AEC-Q200 (not Q100); different 2.6mm×3.0mm package and non-wettable flank leads. | Lacks full automotive qualification; suitable for industrial or commercial telematics where Q100 is not mandated. | Choose only if AEC-Q100 is not required and footprint flexibility exists; lacks CISPR25 Class 5 validation and valley-current OCP. |
Compared with MPM3509GQVE-AEC1-Z, the MPM3610GQVE-AEC1-Z offers higher current headroom in identical packaging, while the TPS82084SILR trades automotive qualification and EMI certification for TI's ecosystem support - making the MPM3509 optimal for cost-sensitive, space-constrained AEC-Q100 designs needing proven CISPR25 Class 5 compliance.
Availability
MPM3509GQVE-AEC1-Z is available at Aetrix Electronics and suitable for automotive camera modules, ADAS domain controllers, and medical imaging sensors requiring stable component supply, AEC-Q100 qualification, and CISPR25 Class 5 EMI compliance.
Supply support for MPM3509GQVE-AEC1-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 analog and power ICs, with over two decades of leadership in integrated power modules and DC/DC conversion.
The MPM3509 belongs to MPS's automotive-grade power module product line, engineered specifically for space-constrained, high-reliability applications in vehicles - emphasizing AEC-Q100 qualification, wettable flank packaging, and certified EMI performance.
FAQ
What is the minimum recommended input capacitance for MPM3509GQVE-AEC1-Z?
A 4.7µF X5R/X7R ceramic capacitor placed adjacent to the IN and PGND pins is the minimum recommended value. This value is validated for stable operation across the full 4V–36V input range and 0.9A load, with RMS current rating exceeding 450mA. Larger values improve hold-up time but are not required for basic functionality.
Does MPM3509GQVE-AEC1-Z require an external bootstrap diode?
No external bootstrap diode is required for standard operation. The device integrates a bootstrap capacitor and charging circuit. An external IN4148 diode from VCC to BST is optional only when VOUT is 3.3V or 5V and duty cycle exceeds 65% - typically at VIN > 7.7V for 3.3V output - to improve light-load efficiency.
How is the output voltage set, and what tolerance does it achieve?
VOUT is set using a resistor divider from OUT to AGND connected to the FB pin. With R1 = 75kΩ and R2 calculated per VOUT = 0.807V × (1 + R1/R2), the typical output accuracy is ±1.6% over temperature and line, based on the 0.807V ±13mV internal reference and resistor ratio tolerance.
Can MPM3509GQVE-AEC1-Z operate below 4V input?
No. The absolute minimum operating input voltage is 4V, enforced by the internal UVLO circuit with a rising threshold of 3.5V ±0.3V and hysteresis of 330mV. Operation below 4V will cause the device to shut down and remain disabled until VIN rises above the UVLO release threshold (~3.17V).
What is the thermal resistance (θJA) of the QFN-17 package, and how does it affect derating?
The published θJA is 46°C/W on a 4-layer JEDEC JESD51-7 PCB. At 25°C ambient, maximum continuous power dissipation is 2.7W. For operation at 125°C ambient, output current must be derated to ~0.65A to maintain TJ ≤ 125°C - confirmed by thermal characterization data in the datasheet's Recommended Operating Conditions table.
Is the NC pin (Pin 17) electrically isolated or bonded internally?
Pin 17 is a true no-connect (NC) with no internal bond wire or silicon connection. It must be left floating - connecting it to any potential risks mechanical stress on the die attach or unintended coupling through package parasitics. The datasheet explicitly states "NC pin must be left floating."
How does frequency foldback improve reliability during high-input-voltage operation?
Frequency foldback reduces switching losses and improves efficiency when VIN exceeds ~21V by halving the frequency to 1.1MHz. This lowers gate drive and switching losses, mitigating thermal stress on internal MOSFETs and inductor core - critical for sustained operation during automotive load-dump events (up to 36V).
MPM3509GQVE-AEC1-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 17-PowerLQFN Module
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Non-Isolated PoL Module
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4V
- Voltage - Input (Max):
- 36V
- Voltage - Output 1:
- 0.8 ~ 30V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 900mA
- Power (Watts):
- -
- Voltage - Isolation:
- -
- Applications:
- ITE (Commercial)
- Features:
- OCP, OTP
- Operating Temperature:
- -
- Efficiency:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 17-QFN (3x5)
- Control Features:
- -
- Approval Agency:
- -
- Standard Number:
- -
MPM3509GQVE-AEC1-Z FAQ
1.How can I place an order for MPM3509GQVE-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPM3509GQVE-AEC1-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 MPM3509GQVE-AEC1-Z reliable?
The price and inventory of MPM3509GQVE-AEC1-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPM3509GQVE-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPM3509GQVE-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPM3509GQVE-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPM3509GQVE-AEC1-Z?
MPM3509GQVE-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPM3509GQVE-AEC1-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 MPM3509GQVE-AEC1-Z?
For technical support, including MPM3509GQVE-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPM3509GQVE-AEC1-Z requirements.
6.How does Aetrix verify that MPM3509GQVE-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPM3509GQVE-AEC1-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 MPM3509GQVE-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPM3509GQVE-AEC1-Z?
All MPM3509GQVE-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPM3509GQVE-AEC1-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 MPM3509GQVE-AEC1-Z part is unused and in its original packaging.
Return procedure for MPM3509GQVE-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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