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Monolithic Power Systems Inc. MPQ4326MGRE-AEC1-P
- Part No.:
- MPQ4326MGRE-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 14-PowerVFQFN
- Datasheet:
-
MPQ4326MGRE-AEC1-P.pdf
- Description:
- IC REG BUCK ADJ 6A 14QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,510
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Product details
Overview
MPQ4326MGRE-AEC1-P from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified synchronous step-down converter with integrated high-side (45 mΩ) and low-side (25 mΩ) MOSFETs, 36 V max input, 6 A continuous output, and 1 µA shutdown quiescent current. It features integrated input capacitors for CISPR25 Class 5 EMI compliance, configurable 200 kHz–2.5 MHz switching frequency, and supports automotive cold-crank via low-dropout mode - deployed in ADAS power rails and infotainment domain controllers.
For engineers reviewing the MPQ4326MGRE-AEC1-P datasheet, MPQ4326MGRE-AEC1-P pinout, MPQ4326MGRE-AEC1-P application, or MPQ4326MGRE-AEC1-P equivalent, key selection criteria include load-dump survival up to 42 V, AAM/FCCM mode control via SYNC/MODE pin, PG accuracy (±5.5% window), thermal shutdown at 155–185 °C, and QFN-14 wettable flank package compatibility with automated optical inspection.
Technical Context
The MPQ4326MGRE-AEC1-P uses peak current mode control with frequency foldback during start-up to prevent inductor current runaway. Its dual VIN pins feed internal control circuitry and power switches, while integrated 0.1 µF VIN-to-PGND capacitors reduce high-frequency ripple and improve EMC robustness.
It implements advanced asynchronous modulation (AAM) for light-load efficiency and forced continuous conduction mode (FCCM) via external clock synchronization. The 50 ns minimum on-time enables high duty-cycle operation down to 3.3 V input at 5 V output, critical for automotive cold-crank conditions where input may dip to 3.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.3 V to 36 V - supports full automotive battery range including cold-crank (≥3.5 V UVLO rising) and load dump (42 V OVP survival). |
| Output Current | 6 A continuous - delivered with internal 45 mΩ HS-FET and 25 mΩ LS-FET, enabling compact layout without external power devices. |
| Quiescent Current | 1 µA in shutdown, 24 µA in sleep mode - extends battery life in always-on vehicle modules such as telematics and body control units. |
| Switching Frequency | 200 kHz to 2.5 MHz (resistor-programmable) - allows optimization for size (high fSW) or efficiency (low fSW) and avoids AM radio band interference. |
| Power Good Accuracy | ±5.5% window (94.5–105.5% of VOUT) - provides reliable system-level power sequencing and fault detection for microcontrollers and FPGAs. |
| Thermal Protection | 155–185 °C shutdown with 20 °C hysteresis - ensures fault-tolerant operation under sustained overload or poor heatsinking in sealed enclosures. |
| EMI Performance | CISPR25 Class 5 compliant - achieved via integrated input capacitors, symmetric VIN pinout, and spread-spectrum modulation, reducing need for external filtering. |
Pinout & Package
MPQ4326MGRE-AEC1-P is housed in a QFN-14 (4 mm × 4 mm) package with wettable flanks for solder joint inspection. Thermal pad exposed on underside improves heat dissipation in automotive PCBs with limited airflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 13 PGND | Power ground reference | Low-inductance return path for high di/dt switch currents; must be connected to solid ground plane beneath IC. |
| 2, 12 VIN | Main input supply | Dual pins reduce IR drop and EMI; each requires local 0.1 µF ceramic capacitor to PGND per datasheet layout guidance. |
| 3 BST | Bootstrap supply for HS-FET gate driver | Requires external BST–SW capacitor (typically 0.1 µF); voltage must exceed SW by ≥2.2 V to enable HS-FET turn-on. |
| 4 SYNC/MODE | Mode select and external clock input | Pull ≤0.4 V for AAM (light-load efficiency), ≥1.4 V for FCCM, or drive with 200 kHz–2.5 MHz clock for synchronization. |
| 5 BIAS | External bias supply input | Connect to 5 V VOUT to reduce IQ to 3 µA; mandatory for lowest quiescent current in battery-sensitive applications. |
| 6 VCC | Internal LDO output | 5 V regulated supply for control logic; requires ≥1 µF ceramic decoupling capacitor placed adjacent to pin. |
| 7 AGND | Analog ground reference | Separate from PGND to minimize noise coupling into feedback loop; connect to PGND at single point near VCC capacitor. |
| 8 FB | Feedback voltage sense | 0.8 V reference threshold; for fixed-output versions, tied directly to VOUT; for adjustable, forms divider with precision resistors. |
| 9 FREQ | Switching frequency programming | Resistor-to-ground sets fSW: 49.9 kΩ → ~410 kHz, 19.6 kΩ → ~1 MHz, 8.66 kΩ → ~2.2 MHz. |
| 10 PG | Open-drain power good indicator | Asserts high when VOUT is within ±5.5%; requires external pull-up (e.g., 10 kΩ to 3.3 V) for MCU reset or sequencing logic. |
| 11 EN | Enable control | Active-high logic: >1.02 V enables, <0.85 V shuts down; internal 100 kΩ pull-down ensures default-off state if left unconnected. |
| 14 SW | Switch node | Connection point between HS-FET source and LS-FET drain; high dv/dt node requiring tight layout and minimal trace length. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated input capacitors | Two 0.1 µF internal VIN–PGND caps reduce board area, simplify layout, and suppress high-frequency switching noise before it reaches input bulk cap. |
| MeshConnect™ flip-chip packaging | Enables lower thermal resistance (θJC = 7.9 °C/W) and improved current handling vs. wire-bond QFN, supporting 6 A continuous in 4 mm × 4 mm footprint. |
| Advanced Asynchronous Modulation (AAM) | Reduces switching losses at light loads by skipping pulses; achieves >85% efficiency at 1 mA output with 12 V input and 5 V output. |
| Automotive-grade protection suite | Includes hiccup-mode OCP, over-voltage protection (42 V load dump), thermal shutdown (155–185 °C), and EN/UVLO hysteresis for stable startup in noisy environments. |
| Wettable flank QFN-14 | Facilitates automated optical inspection (AOI) of solder joints in high-reliability automotive manufacturing, eliminating X-ray requirement for process validation. |
Applications
| ADAS Camera Power Supply | Infotainment Head Unit Core Rail |
|---|---|
|
Use Scenario: Powers image signal processor (ISP) and MIPI interface in 8 MP surround-view camera module operating in engine bay ambient up to 105 °C. IC Role / Device Role / Timing Role: Primary 5 V/3.3 V buck regulator delivering clean, low-noise power with fast transient response to handle burst-mode sensor readout. Use Value: Integrated input caps and CISPR25 Class 5 compliance eliminate need for external π-filter, saving 30 mm² PCB area and passing OEM EMC validation on first spin. |
Use Scenario: Supplies 1.8 V core voltage to ARM Cortex-A76 application processor in digital cockpit head unit with always-on CAN wake-up capability. IC Role / Device Role / Timing Role: High-efficiency, low-IQ DC/DC converter maintaining regulation during 12 V battery brownouts (down to 6 V) and supporting deep-sleep states. Use Value: 1 µA shutdown current and AAM mode extend backup battery runtime to >72 hours, meeting OEM requirements for parked-mode telematics reporting. |
| Digital Instrument Cluster Display | Automotive Ethernet PHY Power |
|
Use Scenario: Generates 3.3 V rail for TFT-LCD timing controller and touch controller in 12.3-inch digital cluster exposed to dashboard temperatures up to 85 °C. IC Role / Device Role / Timing Role: Synchronous buck converter with low dropout mode ensuring stable 3.3 V output during cold-crank events (VIN = 3.5 V). Use Value: 50 ns minimum on-time enables >90% duty cycle operation, avoiding dropout and preventing display flicker or black screen during engine start. |
Use Scenario: Provides isolated 1.0 V and 2.5 V supplies for 100BASE-T1 automotive Ethernet PHY in gateway ECU with strict EMI limits. IC Role / Device Role / Timing Role: Configurable 2.2 MHz switching frequency places fundamental noise above 100 MHz, easing filtering for 100BASE-T1 common-mode choke. Use Value: Spread-spectrum modulation and symmetric VIN pinout reduce peak radiated emissions by 8 dBµV/m vs. non-SS designs, accelerating CISPR25 certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480-Q1 | Higher 12 A rating, no integrated input caps, 3.5–36 V input, 1.5 µA shutdown IQ | Larger solution size due to external input filtering; better suited for higher-current ADAS ECUs needing >6 A | Select when output current demand exceeds 6 A or when design requires adjustable soft-start timing not available on MPQ4326M |
| TPS62933-Q1 | Lower 3 A rating, 3–36 V input, 2.5 µA shutdown IQ, no integrated input caps, smaller 2.5 mm × 3 mm QFN | Insufficient current for ADAS camera or cluster use; optimized for low-power domain controllers and sensors | Prefer for space-constrained sub-3 A rails where MPQ4326MGRE-AEC1-P's 6 A capability is unnecessary overhead |
Compared with LM61480-Q1 and TPS62933-Q1, MPQ4326MGRE-AEC1-P uniquely balances 6 A capability, integrated EMI mitigation, and ultra-low shutdown current in a wettable-flank QFN - making it optimal for mid-power automotive domains where board area, EMC pass rate, and battery hold-up time are co-constrained.
Availability
MPQ4326MGRE-AEC1-P is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and digital instrument clusters requiring stable component supply with AEC-Q100 qualification and long-term production support.
Supply support for MPQ4326MGRE-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 power management ICs for automotive, industrial, and computing markets, with design centers in the US, China, and Taiwan.
The MPQ4326M product line targets automotive power conversion with emphasis on EMI robustness, functional safety readiness (MPSafe™ QM), and extended temperature operation - engineered specifically for ADAS, infotainment, and body electronics demanding AEC-Q100 Grade 1 reliability.
FAQ
What is the maximum input voltage the MPQ4326MGRE-AEC1-P can withstand during automotive load dump?
The device survives transient input voltages up to 42 V due to integrated over-voltage protection (OVP), which triggers at 36–40 V (rising threshold) with 1 V hysteresis - fully compliant with ISO 16750-2 Pulse 5a load dump test requirements for 12 V systems.
How does the integrated BIAS pin reduce quiescent current?
When BIAS is connected to a stable 5 V output (e.g., VOUT of a 5 V version), the internal bias LDO bypasses its internal regulator, lowering total VIN quiescent current from 24 µA to 3 µA - a direct hardware-level reduction verified across -40°C to +150°C junction temperature.
Can the MPQ4326MGRE-AEC1-P operate reliably at -40°C ambient with full 6 A output?
Yes. The device is rated for -40°C to +150°C junction temperature and maintains 6 A continuous output across this range. At -40°C, RDS(ON)_HS increases to ~60 mΩ and RDS(ON)_LS to ~35 mΩ, but thermal design margin remains sufficient with standard 2 oz copper and 4-layer PCB per EVB data.
What is the purpose of the two VIN pins, and how should they be decoupled?
Pins 2 and 12 are internally connected VIN inputs intended to reduce parasitic inductance and EMI. Each must have its own 0.1 µF ceramic capacitor placed as close as possible to the pin and connected directly to PGND - a layout requirement validated in MPS's EVQ4326M-R-00A evaluation board.
Does the MPQ4326MGRE-AEC1-P support output voltage adjustment beyond the fixed options listed?
Yes. While fixed-output versions (1 V, 1.8 V, etc.) are factory-set, the MPQ4326M base part supports adjustable output via external resistor divider on FB pin. The feedback threshold is precisely trimmed to 0.800 V (±0.75%) across temperature, enabling accurate custom VOUT setting.
How is the power good (PG) signal used in system-level power sequencing?
PG asserts high when VOUT stabilizes within 94.5–105.5% of nominal value and remains asserted until VOUT falls below 93% or rises above 107%. This windowed behavior enables safe release of downstream reset signals and prevents premature MCU boot during brownout recovery.
Is the QFN-14 package compatible with standard lead-free reflow profiles?
Yes. The MPQ4326MGRE-AEC1-P is qualified for JEDEC J-STD-020 moisture sensitivity level 1 and supports peak reflow temperatures up to 260°C. Wettable flanks ensure reliable solder fillet formation under IPC-A-610 Class 3 acceptance criteria.
MPQ4326MGRE-AEC1-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 14-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.3V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 34.2V
- Current - Output:
- 6A
- Frequency - Switching:
- 200kHz ~ 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 14-QFN (4x4)
MPQ4326MGRE-AEC1-P FAQ
1.How can I place an order for MPQ4326MGRE-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4326MGRE-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 MPQ4326MGRE-AEC1-P reliable?
The price and inventory of MPQ4326MGRE-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 MPQ4326MGRE-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPQ4326MGRE-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4326MGRE-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4326MGRE-AEC1-P?
MPQ4326MGRE-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4326MGRE-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 MPQ4326MGRE-AEC1-P?
For technical support, including MPQ4326MGRE-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4326MGRE-AEC1-P requirements.
6.How does Aetrix verify that MPQ4326MGRE-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPQ4326MGRE-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 MPQ4326MGRE-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPQ4326MGRE-AEC1-P?
All MPQ4326MGRE-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4326MGRE-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 MPQ4326MGRE-AEC1-P part is unused and in its original packaging.
Return procedure for MPQ4326MGRE-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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