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Monolithic Power Systems Inc. MPQ4324EGDE-AEC1-Z
- Part No.:
- MPQ4324EGDE-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 12-PowerVFQFN
- Datasheet:
-
MPQ4324EGDE-AEC1-Z.pdf
- Description:
- IC REG BUCK ADJ 4A 12QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,897
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Product details
Overview
MPQ4324EGDE-AEC1-Z 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, delivering up to 4A peak output current across a 3.3V–36V input range and surviving 42V automotive load dump transients. It operates from –40°C to +150°C junction temperature and supports cold-crank down to 3.1V VIN, making it suitable for automotive infotainment power rails.
For engineers reviewing the MPQ4324EGDE-AEC1-Z datasheet, MPQ4324EGDE-AEC1-Z pinout, MPQ4324EGDE-AEC1-Z application, or MPQ4324EGDE-AEC1-Z equivalent, key selection criteria include its 1μA shutdown current, configurable 350kHz–2.5MHz switching frequency with spread-spectrum modulation, 0.8V feedback reference, and QFN-12 (2mm×3mm) wettable-flank package for automotive-grade thermal and EMI robustness.
Technical Context
The MPQ4324EGDE-AEC1-Z 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 pulse-skipping operation.
It integrates dual MOSFETs, a bootstrap driver for high-side gate control, and a precision 0.8V ±1% feedback reference. The device implements hiccup-mode over-current protection, thermal shutdown at 175°C, and low-dropout (LDO) mode for cold-crank operation-enabling stable 5V or 3.3V rail generation even when input drops to 3.1V.
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 load dump (42V transient tolerance) |
| Output current | Up to 4A peak - enables single-chip power supply for ADAS camera modules or cluster microcontrollers without external boost stages |
| Switching frequency | 350kHz to 2.5MHz - configurable via external resistor; allows optimization for size (high-f), efficiency (mid-f), or EMI (spread-spectrum enabled) |
| Quiescent current | 1μA shutdown / 20μA sleep - extends battery life in always-on automotive modules such as telematics or body control units |
| Feedback reference | 0.8V ±1% - enables precise adjustable output (e.g., 1.0V–5.0V) or fixed-output variants (1V, 1.8V, 3.3V, 5V) with <±1.5% total output error |
| Thermal rating | –40°C to +150°C TJ - meets AEC-Q100 Grade 1 requirements for under-hood and instrument panel placement |
| EMI compliance | CISPR25 Class 5 compliant - achieves radiated/ conducted emissions limits without added ferrite beads or shielding in standard 4-layer PCB layouts |
Pinout & Package
MPQ4324EGDE-AEC1-Z is housed in a thermally enhanced QFN-12 (2mm × 3mm) package with wettable flanks for automated optical inspection (AOI) and improved solder joint reliability in automotive reflow processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 11 PGND | Power ground | Dual low-inductance ground return paths for high di/dt switching currents; requires local 10µF ceramic decoupling per pin |
| 2, 10 VIN | Main input supply | Parallel VIN pins reduce trace resistance and thermal stress; must be decoupled individually near each pin with ≥1µF X5R/X7R ceramics |
| 3 BOOT | High-side gate driver supply | Connects to SW node via 0.1µF ceramic capacitor; enables bootstrap charging for N-channel HS-FET drive above VIN |
| 4 FREQ | Frequency configuration | Resistor-to-AGND sets fSW (e.g., 86.6kΩ = 415kHz); enables EMI tuning without changing inductor or layout |
| 5 VCC | Bias regulator output | Internal LDO supplies control circuitry; requires ≥1µF ceramic capacitor to AGND for stability and noise rejection |
| 6 AGND | Analog ground reference | Separate ground for FB, PG, EN; must be connected to PGND at single point near IC to avoid noise coupling into feedback path |
| 7 FB | Feedback input | 0.8V reference input; for adjustable outputs, connects to resistor divider; for fixed versions, tied directly to VOUT |
| 8 PG | Power good open-drain output | Asserts high when VOUT is within ±5.5% of nominal; requires external pull-up for system power sequencing or fault monitoring |
| 9 EN | Enable control | Logic-level enable (1.02V threshold); no internal pull-up; must be actively driven high/low - floating causes undefined operation |
| 12 SW | Switch node | Drain of LS-FET / source of HS-FET; high dv/dt node requiring tight loop area with input cap and inductor to minimize EMI |
Key Features
| Feature | Design Value |
|---|---|
| 42V load dump tolerance | Withstands ISO 16750-2 Pulse 5a transients without latch-up or parameter shift - eliminates need for upstream TVS clamping in most cases |
| Wettable flank QFN-12 | Enables automated AOI of solder joints on bottom-side terminations - critical for zero-defect automotive manufacturing audits |
| MeshConnect™ flip-chip packaging | Reduces parasitic inductance by >30% vs. wire-bond QFN, improving switching efficiency and reducing EMI radiation at 2.2MHz operation |
| Low-dropout (LDO) mode | Maintains regulation down to VIN = VOUT + 0.3V (e.g., 3.3V out at 3.6V in), enabling uninterrupted operation during 3.1V cold-crank events |
| Frequency spread spectrum (FSS) | ±10% modulation at 15kHz spreads energy across bandwidth, lowering peak radiated emissions by up to 10dB - simplifies CISPR25 Class 5 certification |
Applications
| Automotive Infotainment | Instrument Clusters |
|---|---|
|
Use Scenario: Powering SoC core rails (1.0V, 1.1V) and DDR memory (1.2V) in head-unit systems exposed to wide battery voltage swings and EMI-sensitive audio paths. IC Role / Device Role / Timing Role: Primary buck regulator supplying clean, low-noise intermediate bus; PG signal synchronizes SoC boot sequence. Use Value: 20μA sleep IQ extends standby time; FSS and symmetric VIN pinout meet OEM audio noise specs (<10mV ripple) without added LC filters. |
Use Scenario: Generating 3.3V and 5V rails for TFT display controllers, CAN transceivers, and microcontroller peripherals in digital dashboards. IC Role / Device Role / Timing Role: Dual-rail power source with independent enable control; PG signals validate both rails before backlight activation. Use Value: 42V load dump survival eliminates external protection components; wettable flanks ensure IPC-A-610 Class 3 solder joint acceptance. |
| ADAS Camera Modules | Automotive Body Control Units |
|
Use Scenario: Supplying image sensor (1.2V), ISP (1.8V), and SerDes (2.5V) in front-facing ADAS cameras mounted near engine compartments. IC Role / Device Role / Timing Role: High-temp-stable buck converter operating at TJ = 125°C ambient; thermal shutdown prevents field failure during prolonged sun exposure. Use Value: –40°C to +150°C rating avoids derating; 65ns minimum on-time supports high VIN/VOUT ratios (e.g., 12V→1.2V @ 2.2MHz). |
Use Scenario: Powering LIN transceivers, door lock actuators, and ambient lighting drivers in distributed body electronics with long harness runs. IC Role / Device Role / Timing Role: Centralized 5V rail generator with hiccup OCP protecting against shorted solenoid loads. Use Value: 1μA shutdown current enables >10-year battery backup life; AEC-Q100 qualification ensures zero field returns over 15-year vehicle lifecycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4323GDE-AEC1-Z | 3A continuous / 4A peak output; identical pinout and feature set but lower current rating and 50mΩ/35mΩ MOSFETs | Suitable for lower-power clusters or gateway ECUs where 3A suffices; not recommended for ADAS sensors drawing >3.2A peak | Select when BOM cost reduction is prioritized and peak load stays below 3A - retains same layout, firmware, and qualification status |
| TPS543B20RTWR | 36V input, 4A, but requires external MOSFETs; higher IQ (12µA) and no wettable flanks; supports PMBus | Used where digital telemetry (voltage/current/temp monitoring) is required; lacks integrated 42V load dump hardening | Choose only if PMBus telemetry is mandatory and system-level TVS protection is already implemented - adds board area and BOM count |
Compared with MPQ4323GDE-AEC1-Z, this part delivers 33% higher peak current headroom for transient-heavy ADAS loads; versus TPS543B20RTWR, it reduces solution size by 40% and eliminates external FET layout complexity while guaranteeing automotive transient immunity out-of-box.
Availability
MPQ4324EGDE-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment, instrument clusters, and ADAS camera modules requiring stable component supply across extended temperature and high-reliability automotive production programs.
Supply support for MPQ4324EGDE-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 for automotive, industrial, and consumer markets, with design centers in the US, China, and Taiwan.
The MPQ4324E product line targets AEC-Q100-compliant DC/DC conversion in space-constrained automotive subsystems, emphasizing ultra-low IQ, load-dump resilience, and EMI robustness without external components.
FAQ
What is the minimum input voltage required to maintain regulation during cold-crank?
The MPQ4324EGDE-AEC1-Z sustains regulation down to 3.1V input after startup and supports start-up from 3.9V. In low-dropout (LDO) mode, it maintains VOUT within specification even when VIN drops to VOUT + 0.3V - e.g., 3.6V in for 3.3V out - meeting ISO 16750-2 cold-crank requirements.
Does the device require external compensation components?
No. The MPQ4324EGDE-AEC1-Z uses internal compensation optimized for typical 2.2µH–5.6µH inductors and 22µF–47µF output capacitors. Only external components needed are input/output capacitors, bootstrap capacitor, feedback resistors (for adjustable versions), and the FREQ-setting resistor.
How is the power good (PG) signal used in system power sequencing?
The open-drain PG pin asserts high when VOUT is within 94.5%–105.5% of nominal value. It must be pulled up externally (e.g., to 3.3V) and can drive FPGA DONE pins, microcontroller reset inputs, or enable signals of downstream regulators to enforce strict power-up order and fault detection.
Can the switching frequency be synchronized to an external clock?
No. The MPQ4324EGDE-AEC1-Z does not support external clock synchronization. Frequency is set solely by the resistor on the FREQ pin (350kHz–2.5MHz range) and modulated internally via spread-spectrum for EMI reduction - no external sync pin is provided.
What is the thermal performance on a standard 4-layer PCB?
On an 8.3cm×8.3cm, 2oz copper, 4-layer evaluation board, the device achieves θJA = 35.5°C/W. At 4A load and 12V input, case temperature rise is ≤40°C above ambient - well within the 150°C max junction limit even at 85°C ambient.
Is the FB pin compatible with remote sensing configurations?
No. The FB pin is designed for local feedback only. Remote sensing is not supported; output voltage accuracy relies on proper PCB layout with Kelvin connections for high-current designs - trace IR drop must be minimized by placing FB resistors close to the output capacitor.
Does the part support forced PWM mode to eliminate audible noise?
No. The MPQ4324EGDE-AEC1-Z uses Advanced Asynchronous Modulation (AAM), which automatically transitions between fixed-frequency PWM and pulse-skipping modes based on load. Forced continuous conduction mode (CCM) is not user-configurable.
MPQ4324EGDE-AEC1-Z 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-Z FAQ
1.How can I place an order for MPQ4324EGDE-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4324EGDE-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 MPQ4324EGDE-AEC1-Z reliable?
The price and inventory of MPQ4324EGDE-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 MPQ4324EGDE-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ4324EGDE-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4324EGDE-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4324EGDE-AEC1-Z?
MPQ4324EGDE-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4324EGDE-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 MPQ4324EGDE-AEC1-Z?
For technical support, including MPQ4324EGDE-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4324EGDE-AEC1-Z requirements.
6.How does Aetrix verify that MPQ4324EGDE-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ4324EGDE-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 MPQ4324EGDE-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ4324EGDE-AEC1-Z?
All MPQ4324EGDE-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4324EGDE-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 MPQ4324EGDE-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ4324EGDE-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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