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Monolithic Power Systems Inc. MPM3509GQVE-AEC1-P
- Part No.:
- MPM3509GQVE-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 17-PowerLQFN Module
- Datasheet:
-
MPM3509GQVE-AEC1-P.pdf
- Description:
- DC DC CONVERTER 0.8-30V
- Quantity:
- Payment:
- Shipping:
Inventory:1,816
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Product details
Overview
MPM3509GQVE-AEC1-P from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, synchronous step-down DC/DC power module integrating MOSFETs, inductor, and capacitors in a single QFN-17 package. It delivers 0.9A continuous output current across a 4V–36V input range, features fixed 2.2MHz switching frequency with frequency foldback, and includes power-good indication, valley-current OCP with hiccup mode, and thermal shutdown - deployed in automotive ADAS camera power rails.
For engineers reviewing the MPM3509GQVE-AEC1-P datasheet, MPM3509GQVE-AEC1-P pinout, MPM3509GQVE-AEC1-P application, or MPM3509GQVE-AEC1-P equivalent, key selection criteria include its wettable flank QFN-17 package for automated optical inspection, CISPR25 Class 5 EMI compliance, integrated bootstrap capacitor, and forced CCM operation enabling stable light-load regulation in safety-critical automotive subsystems.
Technical Context
The MPM3509GQVE-AEC1-P employs peak-current-mode control with internal 0.807V reference and optimized compensation network, eliminating external loop components. Its valley-current detection OCP operates at 1.5–3.5A with hiccup recovery, while thermal shutdown triggers at 170°C (20°C hysteresis) and resumes at 150°C.
It integrates a 4.8V internal LDO regulator powering all logic circuits, with no external VCC capacitor required. The EN/SYNC pin supports both enable/disable control and external clock synchronization from 450kHz to 2.2MHz, with internal 6.5V Zener clamping and 500kΩ pull-down resistor for floating-disable functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 36V - supports wide automotive battery transients including cold-crank (4.5V) and load-dump (36V). |
| Output Current | 0.9A continuous - sufficient for powering image sensors, microcontrollers, and CAN transceivers in compact modules. |
| Switching Frequency | Fixed 2.2MHz (±20%) - enables small external filter components and fast transient response; folds back to 1.1MHz above ~21V input. |
| Feedback Reference | 0.807V ±13mV - sets precise output voltage via external resistor divider; supports adjustable outputs from 0.8V. |
| Power Good Threshold | PG rising at 0.83–0.93×VFB, falling at 0.78–0.88×VFB - provides accurate output voltage monitoring with 40–160μs delay for system sequencing. |
| Thermal Protection | 170°C shutdown / 150°C restart - protects against sustained overload or poor PCB thermal design without latch-off. |
| EMI Compliance | CISPR25 Class 5 - meets stringent automotive radiated emissions limits without external filters in typical layout. |
Pinout & Package
MPM3509GQVE-AEC1-P uses a wettable flank QFN-17 (3mm × 5mm × 1.6mm) package with exposed thermal pad on underside for enhanced heat dissipation. Pin 17 (NC) must remain unconnected and floating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PG | Open-drain power-good indicator | Signals valid output voltage; requires external pull-up; used for system power sequencing and fault reporting. |
| 2 EN/SYNC | Enable and frequency sync input | Pull high ≥1.45V to enable; apply 450kHz–2.2MHz clock to synchronize switching; floats to disable via internal 500kΩ pull-down. |
| 3 FB | Feedback voltage sense node | Connects to resistor divider tap; internal 0.807V reference enables precise output regulation; sensitive to noise - route away from SW nodes. |
| 4 VCC | Internal LDO output | 4.8V regulated supply for internal circuitry; no external capacitor needed due to integrated decoupling. |
| 5 AGND | Analog ground reference | Logic ground tied internally to PGND; separate routing recommended to minimize noise coupling into feedback path. |
| 6–8, 12 SW | Switch node connections | Internally connected to high-side MOSFET drain; large copper pour recommended for thermal relief and low-inductance switching paths. |
| 9–11 OUT | Power output terminals | Parallel output pins reduce conduction loss and improve current sharing; connect directly to output capacitor and load. |
| 13 BST | Bootstrap capacitor node | Internally connected to bootstrap capacitor; no external connection required - simplifies layout and improves reliability. |
| 14–15 PGND | Power ground return | High-current return path for MOSFETs and inductor; requires solid copper pour with multiple vias to inner ground planes. |
| 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 - no internal connection; solder mask opening should avoid accidental shorting. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated power stage | Combines 90mΩ HS and 50mΩ LS MOSFETs, 2.2μH inductor, and input/output capacitors - reduces BOM count to only four external components. |
| Forced CCM operation | Maintains fixed 2.2MHz switching across 0–0.9A load range - eliminates audible noise and ensures predictable EMI behavior at light loads. |
| Valley-current OCP with hiccup | Detects low-side current during off-time and enters periodic restart mode under short-circuit - limits average power dissipation and prevents thermal runaway. |
| Wettable flank package | QFN-17 with solderable side walls - enables automated optical inspection (AOI) of solder joints for automotive-grade process traceability. |
| CISPR25 Class 5 compliance | Meets automotive radiated emissions limits (150kHz–1GHz) using standard 4-layer PCB layout - eliminates need for external EMI filters in most applications. |
Applications
| Automotive Camera Module | ADAS Domain Controller |
|---|---|
|
Use Scenario: Powers 3.3V image sensor and ISP in rear-view or surround-view camera housing exposed to 4V–18V battery rail with load-dump transients. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering stable 3.3V/0.9A with fast line/load transient response and PG signaling for sensor initialization. Use Value: Integrated inductor and AEC-Q100 Grade 1 qualification eliminate qualification overhead; wettable flanks ensure solder joint reliability in thermally cycled environments. |
Use Scenario: Supplies 1.8V core voltage to automotive SoC in centralized ADAS controller requiring low-noise, ripple-free power under dynamic processing loads. IC Role / Device Role / Timing Role: Secondary buck converter operating in forced CCM to maintain constant 2.2MHz switching - avoids beat frequencies with other system clocks. Use Value: Fixed-frequency operation and internal compensation simplify EMC filtering; 0.807V reference enables tight 1.8V ±1% tolerance with minimal resistor drift impact. |
| Industrial Telematics Unit | Medical Imaging Sensor Interface |
|
Use Scenario: Provides isolated 5V rail for LTE modem and GNSS receiver in vehicle-mounted telematics gateway operating across -40°C to +105°C ambient. IC Role / Device Role / Timing Role: Input-stage regulator accepting 9V–36V unregulated supply; EN/SYNC pin synchronized to system clock to reduce spectral peaks. Use Value: Frequency sync capability enables deterministic EMI placement; thermal shutdown with hysteresis ensures graceful degradation during enclosure overheating events. |
Use Scenario: Powers low-noise analog front-end of portable ultrasound probe requiring clean 2.5V supply with <10mVpp ripple under pulsed Doppler loads. IC Role / Device Role / Timing Role: High-frequency buck converter minimizing output filter size while maintaining PSRR >60dB at 100kHz due to fast error amplifier response. Use Value: Internal 4.8V LDO powers control logic independently - prevents digital noise injection into analog signal chain via shared VCC. |
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 | Higher 1.5A output current, 3.5V–36V input, same QFN-17 package but larger internal inductor (1.5μH vs 2.2μH) | Better suited for higher-power ADAS ECUs; slightly lower efficiency at 0.9A due to increased conduction loss in smaller MOSFETs | Select when >1A load margin or tighter input UVLO (3.5V) is required; footprint-compatible upgrade path |
| TPS82084SILR | TI's 1A module with 2.5V–6V input, 1.8MHz switching, no frequency sync, non-AEC-Q100 rated | Limited to low-voltage systems; lacks automotive qualification, PG pin, and EMI certification | Only viable for non-automotive industrial use where AEC-Q100 and CISPR25 are not mandated |
Compared with MPM3610GQVE-AEC1, the MPM3509GQVE-AEC1-P offers superior light-load efficiency and tighter output voltage accuracy due to lower RDS(ON) and finer FB reference tolerance, while TPS82084SILR lacks critical automotive validation and system-level features like PG and sync - making it unsuitable for safety-relevant deployments.
Availability
MPM3509GQVE-AEC1-P is available at Aetrix Electronics and suitable for automotive camera modules, ADAS domain controllers, and medical imaging sensor interfaces requiring stable component supply with full AEC-Q100 traceability and long-term production support.
Supply support for MPM3509GQVE-AEC1-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 over two decades of expertise in DC/DC conversion, motor drivers, and LED lighting solutions.
The MPM3509 belongs to MPS's automotive-qualified power module product line, designed specifically for space-constrained, thermally demanding automotive subsystems where integration, reliability, and EMI robustness are mandatory.
FAQ
What is the minimum input voltage required for reliable startup?
The MPM3509GQVE-AEC1-P has a VIN under-voltage lockout (UVLO) rising threshold of 3.5V ±0.3V. Reliable startup occurs when input voltage exceeds 3.8V, and the device remains operational down to 3.17V before shutting down. This ensures compatibility with automotive cold-crank conditions where battery voltage may dip to 4.5V.
Can the output voltage be adjusted below 0.8V?
No - the internal feedback reference is fixed at 0.807V, and the datasheet specifies "output adjustable from 0.8V" as the absolute minimum. Attempting to set VOUT < 0.8V violates the FB pin's operating range and results in regulation failure or unstable switching behavior.
Is an external bootstrap diode required for 3.3V output at 12V input?
No - the MPM3509GQVE-AEC1-P integrates a bootstrap capacitor and charging circuit. An external diode (e.g., 1N4148) is only recommended when duty cycle exceeds 65% (i.e., VOUT/VIN > 0.65), which corresponds to VOUT > 7.8V at 12V input - not applicable for 3.3V operation.
How does frequency foldback improve system reliability?
Frequency foldback reduces switching frequency from 2.2MHz to 1.1MHz when input voltage exceeds ~21V or during soft-start/short-circuit events. This lowers peak switch current and gate drive losses, preventing thermal runaway and extending safe operating time under overvoltage or overload conditions.
What is the maximum allowable RMS current for the integrated inductor?
The integrated inductor is rated for 0.9A continuous DC current. Its DC resistance is 75mΩ, and thermal design assumes ≤1.7W total power dissipation at +25°C ambient. Derating is required above +85°C ambient - consult the thermal resistance (θJA = 46°C/W) and junction temperature limit (150°C) for specific board layouts.
Does the PG pin require an external pull-up resistor?
Yes - PG is an open-drain output and must be pulled up externally (typically 10kΩ to 3.3V or 5V). The datasheet specifies 4mA sink capability at 0.4V drop, ensuring robust logic-level signaling even with moderate bus capacitance in automotive harness environments.
How is thermal performance affected by the NC pin (Pin 17)?
Pin 17 is a true no-connect with no internal bond wire or silicon connection. Leaving it floating has zero electrical or thermal impact. However, solder mask coverage must prevent bridging to adjacent pins - improper masking could create unintended shorts affecting thermal pad soldering integrity.
MPM3509GQVE-AEC1-P 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-P FAQ
1.How can I place an order for MPM3509GQVE-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPM3509GQVE-AEC1-P 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-P reliable?
The price and inventory of MPM3509GQVE-AEC1-P 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-P is usually 5 days.
3.What payment methods are accepted for MPM3509GQVE-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPM3509GQVE-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPM3509GQVE-AEC1-P?
MPM3509GQVE-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPM3509GQVE-AEC1-P 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-P?
For technical support, including MPM3509GQVE-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPM3509GQVE-AEC1-P requirements.
6.How does Aetrix verify that MPM3509GQVE-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPM3509GQVE-AEC1-P 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-P meets industry standards.
7.What is the process for return or replacement of MPM3509GQVE-AEC1-P?
All MPM3509GQVE-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPM3509GQVE-AEC1-P, 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-P part is unused and in its original packaging.
Return procedure for MPM3509GQVE-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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