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Monolithic Power Systems Inc. MPQ4324EGDE-AEC1-P
- Part No.:
- MPQ4324EGDE-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 12-PowerVFQFN
- Datasheet:
-
MPQ4324EGDE-AEC1-P.pdf
- Description:
- IC REG BUCK ADJ 4A 12QFN
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
MPQ4324EGDE-AEC1-P from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified synchronous step-down converter with integrated 70mΩ high-side and 50mΩ low-side MOSFETs, 3.3V–36V input range, 42V load dump tolerance, and 4A peak output current. It delivers up to 3A continuous output in automotive infotainment and ADAS power rails under cold-crank (3.1V) and load-dump (42V) conditions.
For engineers reviewing the MPQ4324EGDE-AEC1-P datasheet, MPQ4324EGDE-AEC1-P pinout, MPQ4324EGDE-AEC1-P application, or MPQ4324EGDE-AEC1-P equivalent, key selection criteria include its 1μA shutdown current, configurable 350kHz–2.5MHz switching frequency, CISPR25 Class 5 EMI compliance, and QFN-12 (2mm×3mm) wettable flank package for automotive-grade reflow inspection.
Technical Context
The MPQ4324EGDE-AEC1-P uses peak current mode control with frequency foldback during start-up to prevent inductor current runaway. Its advanced asynchronous modulation (AAM) reduces light-load quiescent current to 20μA while maintaining regulation via fixed-frequency or spread-spectrum operation.
Thermal management integrates junction-to-case thermal resistance of 7.3°C/W (θJC), hiccup-mode over-current protection, and thermal shutdown at 160°C–185°C with 20°C hysteresis. The device supports low-dropout (LDO) mode and high-duty-cycle operation for automotive cold-crank survival down to 3.1V VIN.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.3V to 36V - supports full automotive battery range including cold-crank (3.1V min after start-up) and transient surges. |
| Load Dump Tolerance | 42V - withstands ISO 16750-2 pulse 5a without external clamping, eliminating need for TVS diodes in many designs. |
| Peak Output Current | 4A - enables single-chip power delivery for multi-rail ADAS domain controllers or infotainment SoCs. |
| Shutdown Current | 1μA - extends battery life in always-on automotive modules such as telematics or camera wake-on-event systems. |
| Switching Frequency | 350kHz to 2.5MHz - configurable via external resistor; allows optimization for size (high-fSW) or efficiency (low-fSW) and EMI mitigation via FSS. |
| Feedback Reference Voltage | 0.8V ±1% - enables precise output regulation across temperature (−40°C to +150°C TJ) for safety-critical loads. |
| EMI Compliance | CISPR25 Class 5 - meets stringent automotive radiated/conducted emissions limits without added filtering in typical layouts. |
Pinout & Package
MPQ4324EGDE-AEC1-P is housed in a thermally enhanced QFN-12 (2mm × 3mm) package with wettable flanks for automated optical solder-joint inspection in automotive production.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 11 PGND | Power ground reference | Low-inductance return path for high-current switching node; must be connected to solid ground plane beneath IC. |
| 2, 10 VIN | Main input supply | Dual pins reduce IR drop and EMI; each requires local 10µF ceramic decoupling to PGND for stable gate drive. |
| 3 BOOT | High-side gate driver supply | Connects to SW via 0.1µF ceramic capacitor; enables bootstrap operation for N-channel HS-FET without external charge pump. |
| 4 FREQ | Frequency configuration | Resistor-to-AGND sets fSW from 350kHz–2.5MHz; enables EMI tuning and inductor size optimization. |
| 5 VCC | Bias regulator output | Internal LDO supplies control circuitry; requires ≥1µF ceramic cap to AGND for stability under dynamic load. |
| 6 AGND | Analog ground reference | Separate from PGND to minimize noise coupling into feedback and enable circuits; tied to PGND at single point. |
| 7 FB | Output voltage feedback | 0.8V reference input; for adjustable outputs, connects to resistive divider; fixed-output versions tie FB directly to VOUT. |
| 8 PG | Power good indicator | Open-drain output asserts high when VOUT is within ±5.5% of nominal; used for system sequencing and fault detection. |
| 9 EN | Enable control | Logic-level input (1.02V rising threshold); no internal pull-up; must be actively driven to avoid undefined startup behavior. |
| 12 SW | Switch node | Connection point between HS-FET source and LS-FET drain; critical for layout-minimize loop area with input cap and inductor. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 70mΩ HS / 50mΩ LS MOSFETs | Eliminates external power devices and associated gate-drive complexity; reduces BOM count and PCB area by >30% vs discrete solutions. |
| 65ns minimum on-time (tON_MIN) | Enables high step-down ratios (e.g., 24V→3.3V) at 2.2MHz, supporting compact 2.2µH inductors in space-constrained ADAS ECUs. |
| Frequency Spread Spectrum (FSS) | ±10% modulation at 15kHz reduces peak EMI by >10dB, easing CISPR25 Class 5 compliance without shielding or ferrites. |
| Hiccup-mode over-current protection | Auto-retry current limiting prevents thermal runaway during sustained overload or short-circuit, enhancing system reliability. |
| Wettable flank QFN-12 package | Facilitates AOI-based solder-joint inspection per IPC-A-610 automotive standards, improving manufacturing yield and field reliability. |
Applications
| Automotive Infotainment | Advanced Driver-Assistance Systems (ADAS) |
|---|---|
Use Scenario: Powering SoC, display, and audio subsystems in head units with wide input transients. IC Role / Device Role / Timing Role: Primary 5V/3.3V buck regulator delivering up to 3A continuous output with load-dump immunity. Use Value: Eliminates need for external TVS and pre-regulator stages, reducing solution size by 40% and cost by $0.35/unit. | Use Scenario: Supplying radar processor, camera ISP, and sensor fusion MCU in forward-facing ADAS ECU. IC Role / Device Role / Timing Role: High-efficiency, low-noise 1.8V/1.2V rail generator with <100mV load regulation across 0–3A. Use Value: Maintains <±1% output accuracy over −40°C to +125°C ambient, ensuring deterministic timing for real-time vision processing. |
| Automotive Clusters | Industrial Power Systems |
Use Scenario: Driving TFT-LCD backlight and microcontroller in digital instrument clusters exposed to cold-crank events. IC Role / Device Role / Timing Role: Dual-mode regulator operating in LDO mode below 4.5V VIN to sustain 3.3V output during engine start. Use Value: Prevents cluster blackouts during cranking without requiring backup capacitors or secondary regulators. | Use Scenario: Providing isolated 5V/3.3V rails in ruggedized industrial HMIs deployed in vehicle service bays. IC Role / Device Role / Timing Role: Robust DC-DC stage tolerant to 42V surges from inductive load switching in 24V systems. Use Value: Achieves >90% efficiency at 2A load across 9–36V input, reducing thermal design margin by 15°C vs legacy controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480-Q1 | Higher 8A peak rating; 3.5V–36V input; no integrated FSS; 2.1µA IQ in shutdown | Targeted at higher-power ADAS domains; lacks CISPR25 Class 5 certification out-of-box | Select when >4A peak is required and EMI filtering can be added externally |
| TPS62933-Q1 | Lower 3.5A peak; 3V–36V input; 2.5µA ISD; 1.2MHz fixed fSW; no load-dump rating | Optimized for ultra-low-noise applications; not rated for 42V transients | Select for non-transient-sensitive interior modules where footprint is primary constraint |
Compared with LM61480-Q1 and TPS62933-Q1, MPQ4324EGDE-AEC1-P uniquely combines 42V load-dump tolerance, CISPR25 Class 5 compliance, and 1μA shutdown current in a 2mm×3mm wettable flank package-making it optimal for cost-sensitive, space-constrained automotive front-end power stages.
Availability
MPQ4324EGDE-AEC1-P is available at Aetrix Electronics and suitable for automotive infotainment, ADAS domain controllers, and digital instrument clusters requiring stable component supply with AEC-Q100 Grade 1 qualification and long-term automotive lifecycle support.
Supply support for MPQ4324EGDE-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 consumer markets, with over 20 years of analog design expertise.
The MPQ4324E product line is designed specifically for automotive power conversion-emphasizing robustness against load dump, cold crank, and EMI challenges while minimizing solution size and quiescent power in safety-critical systems.
FAQ
What is the maximum allowable input voltage for continuous operation?
The MPQ4324EGDE-AEC1-P supports continuous operation up to 36V input. Its 42V absolute maximum rating applies only to transient load-dump pulses per ISO 16750-2; sustained operation above 36V risks permanent damage and violates AEC-Q100 stress limits.
How does the frequency spread spectrum (FSS) function impact EMI performance?
FSS modulates switching frequency by ±10% at 15kHz, spreading energy across a bandwidth instead of concentrating at harmonics. This reduces peak conducted/radiated emissions by up to 12dB, enabling CISPR25 Class 5 compliance without additional EMI filters or shielded inductors in standard 4-layer PCB layouts.
Can the MPQ4324EGDE-AEC1-P operate with input voltage below 3.3V?
No. The device requires minimum 3.9V to initiate startup (VIN_UVLO_RISING). After startup, it sustains regulation down to 3.1V (cold-crank condition) using high-duty-cycle and LDO modes-but cannot start from voltages below 3.9V.
What is the purpose of the dual VIN pins (pins 2 and 10)?
Pins 2 and 10 are internally connected VIN inputs that reduce parasitic inductance and voltage spikes during high di/dt switching transitions. Each must be decoupled with a local 10µF ceramic capacitor to PGND to maintain stable gate drive and minimize EMI generation at the input stage.
Does the PG pin require an external pull-up resistor?
Yes. The PG pin is open-drain and requires an external pull-up resistor (typically 10kΩ to 3.3V or 5V) to assert a logic-high signal when VOUT is within 94.5%–105.5% of nominal. Leaving PG floating results in undefined system sequencing behavior and potential boot failures.
How is thermal performance validated for automotive under-hood environments?
Thermal validation was performed on MPS's EVQ4324E-D-00A evaluation board (8.3cm×8.3cm, 4-layer, 2oz copper), measuring θJA = 35.5°C/W. At 3A load and 85°C ambient, case temperature rise remains below 70°C-well within the −40°C to +150°C junction limit and compliant with AEC-Q100 thermal stress requirements.
Is the MPQ4324EGDE-AEC1-P compatible with lead-free reflow profiles?
Yes. The QFN-12 package is rated for JEDEC J-STD-020 moisture sensitivity level (MSL) 1 and supports standard lead-free reflow profiles up to 260°C peak temperature. Wettable flanks ensure reliable solder joint formation and automated optical inspection per IPC-A-610 Rev H automotive standards.
MPQ4324EGDE-AEC1-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 12-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:
- 4A
- Frequency - Switching:
- 350kHz ~ 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 12-QFN (2x3)
MPQ4324EGDE-AEC1-P FAQ
1.How can I place an order for MPQ4324EGDE-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4324EGDE-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 MPQ4324EGDE-AEC1-P reliable?
The price and inventory of MPQ4324EGDE-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 MPQ4324EGDE-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPQ4324EGDE-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4324EGDE-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4324EGDE-AEC1-P?
MPQ4324EGDE-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4324EGDE-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 MPQ4324EGDE-AEC1-P?
For technical support, including MPQ4324EGDE-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4324EGDE-AEC1-P requirements.
6.How does Aetrix verify that MPQ4324EGDE-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPQ4324EGDE-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 MPQ4324EGDE-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPQ4324EGDE-AEC1-P?
All MPQ4324EGDE-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4324EGDE-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 MPQ4324EGDE-AEC1-P part is unused and in its original packaging.
Return procedure for MPQ4324EGDE-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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