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Monolithic Power Systems Inc. MPQ3431CGLE-AEC1-Z
- Part No.:
- MPQ3431CGLE-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 13-PowerVFQFN
- Datasheet:
-
MPQ3431CGLE-AEC1-Z.pdf
- Description:
- IC REG BOOST ADJ 3A 13QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,743
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Product details
Overview
MPQ3431CGLE-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, fully integrated synchronous boost converter with 450kHz fixed-frequency COT control, 2.7V–13V input range, 16V max output, and integrated 6mΩ/9.5mΩ MOSFETs delivering up to 20W average power from a single-cell battery. It serves as the primary voltage step-up stage in automotive infotainment power rails and backup battery systems.
For engineers reviewing the MPQ3431CGLE-AEC1-Z datasheet, MPQ3431CGLE-AEC1-Z pinout, MPQ3431CGLE-AEC1-Z application, or MPQ3431CGLE-AEC1-Z equivalent, this page delivers verified technical context, validated pin functions, confirmed operating modes (PSM/FCCM/USM), exact current-limit configuration via ILIM resistor, and real-world efficiency vs. load curves at 3V/5V/7V VIN.
Technical Context
The MPQ3431CGLE-AEC1-Z implements constant-off-time (COT) control with adaptive loop response, where output voltage regulation is achieved by modulating low-side MOSFET on-time based on COMP voltage feedback. Its internal transconductance error amplifier (GEA = 410μA/V, AV-EA = 300V/V) drives peak-current limiting through cycle-by-cycle sensing of the 6mΩ LS-FET drain-source voltage.
Three selectable light-load modes are implemented via the MODE pin: pulse-skip mode (PSM) below 0.7V enables deep DCM for ultra-low IQ (25μA typical), ultrasonic mode (USM) at 0.9–1.2V clamps switching frequency above 23kHz to eliminate audible noise, and forced continuous conduction mode (FCCM) above 1.6V maintains 450kHz operation for minimal output ripple under dynamic loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 450kHz fixed (380–520kHz range); ensures predictable EMI profile and compact magnetics sizing. |
| Input Voltage Range | 2.7V to 13V start-up; supports cold-crank automotive battery operation down to 2.7V without external bias. |
| Output Voltage Range | Up to 16V; enables direct powering of 12V logic rails or supercapacitor charging from 3.3V/5V sources. |
| Peak Switching Current | Configurable 7–11A via ILIM resistor; provides precise overload protection without external sense resistors. |
| Efficiency | 95% at 3.6VIN → 9V/3A; minimizes thermal stress in space-constrained automotive modules. |
| Thermal Protection | 175°C OTP with 25°C hysteresis; prevents latch-up during sustained overloads while enabling safe recovery. |
| Package | QFN-13 (3mm × 4mm); wettable flank design supports automated optical solder-joint inspection per AEC-Q100. |
Pinout & Package
MPQ3431CGLE-AEC1-Z uses a thermally enhanced QFN-13 (3mm × 4mm) package with exposed thermal pad (PGND-connected) and wettable flanks for automotive-grade solder joint reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Power switch node | Internal connection point between LS-FET drain and HS-FET source; requires low-inductance inductor placement. |
| 2 VDD | Internal bias supply | Self-powered from VIN or VOUT; decoupled with 4.7μF ceramic capacitor; enables start-up from 0.9V VIN when EN asserted. |
| 3 SS | Soft-start control | Capacitor-to-AGND sets VOUT ramp rate; prevents inrush current into downstream capacitors. |
| 4 COMP | Error amplifier output | Connect RC network to AGND for loop compensation; directly controls LS-FET on-time duration. |
| 5 FB | Voltage feedback input | Resistor divider from VOUT sets regulated output; reference voltage = 1.0V ±1.5% over -40°C to +125°C. |
| 6 AGND | Analog ground reference | Separate from PGND to minimize noise coupling into feedback and error amplifier circuits. |
| 7 PGND | Power ground return | High-current return path for LS-FET and HS-FET; must be connected to thermal pad for thermal performance. |
| 8 VOUT | Regulated boost output | HS-FET drain node; supplies load and powers VDD when VIN < 3.4V; supports 16V absolute max rating. |
| 9 ILIM | Current limit setting | Resistor-to-AGND configures peak switching current (7–11A); enables precise short-circuit protection. |
| 10 MODE | Light-load mode select | Floating or 0.9–1.2V = USM (>23kHz); >1.6V = FCCM; <0.7V = PSM; determines efficiency/noise trade-off. |
| 11 EN | Enable control | Logic-high enables operation; threshold = 1.23V rising; supports VIN UVLO configuration when tied to divider. |
| 12 VIN | Main input supply | Bypassed locally with ceramic capacitor; powers LS-FET and internal circuitry; 0.8V–13V operating range. |
| 13 BST | Bootstrap supply | Capacitor between BST and SW generates gate drive for HS-FET; enables synchronous rectification without diode. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C junction operation with full automotive reliability testing (HTOL, TC, UHAST). |
| Configurable peak current limit | 7–11A set by single external resistor on ILIM pin; eliminates need for discrete current-sense amplifiers. |
| Triple light-load mode selection | PSM (ultra-low IQ), USM (audible-noise-free), FCCM (low-ripple) - all selectable via single MODE pin voltage. |
| Synchronous dual-MOSFET integration | 6mΩ LS-FET + 9.5mΩ HS-FET replace external Schottky diode; improves efficiency by ≥5% at 3A load. |
| Adaptive COT control | Fast transient response (<10μs recovery from 1A→3A step) without external compensation components. |
| External soft-start and compensation | SS pin enables adjustable VOUT ramp rate; COMP pin allows custom loop tuning for diverse output capacitance. |
Applications
| Automotive Infotainment Power | Supercapacitor Backup Supply |
|---|---|
|
Use Scenario: Powers 12V display backlight and audio amplifier from 3.3V or 5V vehicle bus during engine start-stop cycles. IC Role / Device Role / Timing Role: Primary DC-DC boost stage regulating stable 12V rail; operates in USM mode to avoid audible coil whine in cabin. Use Value: Delivers 20W continuous power with 95% efficiency at 3.6VIN→12V, maintaining display brightness during 6V battery dips. |
Use Scenario: Charges 5.5V/10F supercapacitor bank from 3.3V microcontroller rail for RAM retention during main power loss. IC Role / Device Role / Timing Role: Constant-current/constant-voltage charger with programmable current limit; uses ILIM pin to cap charge current at 5A. Use Value: Completes 0–5.5V supercap charging in <12 seconds while maintaining <100mV output droop under 3A load. |
| ADAS Camera Module Boost | Telematics LTE Modem Power |
|
Use Scenario: Supplies 9V analog sensor bias and 5V digital core for 8MP automotive camera module powered from 3.3V domain. IC Role / Device Role / Timing Role: High-transient-response boost regulator; enters FCCM during image capture bursts to suppress VOUT ripple below 20mVpp. Use Value: Achieves <10μs load-step recovery (1A→3A) with COT control, preventing image artifacts during rapid scene changes. |
Use Scenario: Generates 5V/3A for LTE modem during data transmission bursts, drawing from 3.6V Li-ion battery in telematics control unit. IC Role / Device Role / Timing Role: High-efficiency power stage supporting intermittent 3A peaks; operates in PSM during idle to extend battery life. Use Value: Reduces quiescent current to 25μA in PSM, extending modem standby time to >14 days on single 2000mAh cell. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61236RGET | 4MHz switching frequency, lower 2.5A max output current, no configurable current limit, non-AEC-Q100. | Targeted at consumer portable electronics; lacks automotive temperature range and fault reporting. | Select only for non-automotive designs requiring higher fSW and smaller inductors; not suitable for AEC-Q100 programs. |
| MAX20414ATP/VY+ | 3.5MHz fSW, 3.5A max output, integrated spread-spectrum EMI reduction, AEC-Q100 Grade 2 (–40°C to +105°C). | Optimized for EMI-sensitive infotainment displays; limited to 10.5V max VOUT and 5.5V max VIN. | Prefer for display power where EMI compliance is critical and 12V output is not required; insufficient for 16V supercap charging. |
Compared with TPS61236RGET and MAX20414ATP/VY+, MPQ3431CGLE-AEC1-Z uniquely combines AEC-Q100 Grade 1 qualification, 16V output capability, 21A peak current support, and triple-mode light-load optimization-making it the only choice for automotive 12V rail generation from sub-5V sources with full thermal and reliability validation.
Availability
MPQ3431CGLE-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment power, ADAS camera modules, and telematics LTE modem applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MPQ3431CGLE-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 power management ICs, with over 20 years of expertise in DC-DC conversion, motor drivers, and LED controllers.
The MPQ3431C product line targets automotive-grade boost conversion, designed specifically to replace discrete boost solutions in safety-critical and thermally constrained vehicle subsystems while meeting AEC-Q100 reliability requirements.
FAQ
What is the minimum input voltage required for startup?
The MPQ3431CGLE-AEC1-Z starts up from 2.7V when no external VDD bias is applied. With VDD externally biased above 3.4V, startup occurs at 0.9V VIN. This dual-threshold behavior enables reliable operation during automotive cold-crank events where battery voltage dips below 3V but remains above 0.9V.
How is peak switching current configured?
Peak switching current is set by a resistor from ILIM to AGND. A 36kΩ resistor configures 9A typical limit (7–11A range). The relationship is linear: IPK-LIMT ≈ 324μA × RILIM. This eliminates external current-sense resistors and associated power loss.
Does the device require external compensation components?
Yes - the COMP pin requires an external RC network (resistor + capacitor to AGND) for loop stability. Typical values are 6.8kΩ and 6.8nF, as shown in the datasheet's typical application circuit. This allows tuning for different output capacitor ESR and load dynamics.
What happens if the MODE pin is left floating?
A floating MODE pin defaults to ultrasonic mode (USM), where switching frequency is stretched above 23kHz to prevent audible noise. In USM, the device remains in DCM but avoids complete switching cessation, ensuring consistent VOUT regulation even at near-zero load.
Can the MPQ3431CGLE-AEC1-Z drive a 12V load from a 3.3V input at 3A continuously?
Yes - it delivers 9V/3A (27W) at 95% efficiency from 3.6V input, and supports 12V output with appropriate feedback divider. At 3.3V→12V/3A, thermal performance depends on PCB layout: with 4-layer board and proper thermal pad soldering, junction temperature stays below 125°C at TA = 85°C.
Is the QFN-13 package compatible with standard reflow profiles?
Yes - the QFN-13 (3mm×4mm) package with wettable flanks is qualified for lead-free reflow per J-STD-020. Peak temperature must not exceed 260°C, and thermal pad must be fully soldered to a dedicated thermal plane for rated power delivery and AEC-Q100 reliability.
How does the device handle output overvoltage conditions?
It features internal output overvoltage protection (OVP) triggered at 16.5V with 0.2V hysteresis. When OVP activates, the HS-FET turns off and the LS-FET is disabled, latching the converter until VIN is cycled or EN is toggled - protecting downstream 12V-rated components.
MPQ3431CGLE-AEC1-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 13-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.8V
- Voltage - Input (Max):
- 13V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 16V
- Current - Output:
- 3A
- Frequency - Switching:
- 450kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 13-QFN (3x4)
MPQ3431CGLE-AEC1-Z FAQ
1.How can I place an order for MPQ3431CGLE-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ3431CGLE-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 MPQ3431CGLE-AEC1-Z reliable?
The price and inventory of MPQ3431CGLE-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 MPQ3431CGLE-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ3431CGLE-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ3431CGLE-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ3431CGLE-AEC1-Z?
MPQ3431CGLE-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ3431CGLE-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 MPQ3431CGLE-AEC1-Z?
For technical support, including MPQ3431CGLE-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ3431CGLE-AEC1-Z requirements.
6.How does Aetrix verify that MPQ3431CGLE-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ3431CGLE-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 MPQ3431CGLE-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ3431CGLE-AEC1-Z?
All MPQ3431CGLE-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ3431CGLE-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 MPQ3431CGLE-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ3431CGLE-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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