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Monolithic Power Systems Inc. MPQ4320GLE-AEC1-P
- Part No.:
- MPQ4320GLE-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 12-PowerVFQFN
- Datasheet:
-
MPQ4320GLE-AEC1-P.pdf
- Description:
- IC REG BUCK ADJ 500MA 12QFN
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
MPQ4320GLE-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, delivering up to 0.5A output current across a 3.3V–36V input range while surviving 42V automotive load dump transients. It features 1μA shutdown current, 20μA light-load quiescent current, and configurable 350kHz–1.8MHz switching frequency-enabling compact, thermally robust power supply design for automotive infotainment and ADAS ECUs.
For engineers reviewing the MPQ4320GLE-AEC1-P datasheet, MPQ4320GLE-AEC1-P pinout, MPQ4320GLE-AEC1-P application, or MPQ4320GLE-AEC1-P equivalent, key selection criteria include its 42V load dump tolerance, -40°C to +150°C junction temperature rating, wettable-flank QFN-12 (3mm×4mm) package, and integrated power-good signaling with ±1.5% threshold hysteresis.
Technical Context
The MPQ4320GLE-AEC1-P employs peak current mode control with frequency foldback during start-up to prevent inductor current runaway, and supports low-dropout (LOD) mode for cold-crank operation down to 3.1V input. Its advanced asynchronous modulation (AAM) dynamically scales switching frequency under light loads to minimize gate driver and switching losses.
EMC performance is enhanced via built-in frequency spread spectrum (FSS) modulation, symmetric VIN pinout, and MeshConnect™ flip-chip packaging-achieving CISPR25 Class 5 compliance in conducted and radiated emissions testing when used with recommended EMI filters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.3V to 36V continuous; withstands 42V transient per ISO16750-supports full automotive battery range including load dump. |
| Output Current | Up to 0.5A continuous; enabled by integrated 70mΩ HS-FET and 50mΩ LS-FET with thermal shutdown at 175°C. |
| Quiescent Current | 20μA in sleep mode; 1μA in shutdown-extends battery life in always-on automotive modules. |
| Switching Frequency | Configurable 350kHz–1.8MHz via external resistor; includes ±10% FSS modulation for EMI reduction. |
| Feedback Reference | 0.8V ±1% over -40°C to +150°C-enables precise output regulation for fixed or adjustable VOUT configurations. |
| Power Good Threshold | 94.5%–105.5% of nominal VOUT with 1.5% hysteresis-provides reliable system power sequencing and fault detection. |
| Minimum On/Off Time | 65ns tON_MIN, 50ns tOFF_MIN-supports high duty cycle operation and stable regulation at low VOUT/VIN ratios. |
Pinout & Package
The MPQ4320GLE-AEC1-P is housed in a wettable-flank QFN-12 (3mm × 4mm) package with exposed thermal pad, optimized for automotive PCB assembly and thermal dissipation (θJA = 50°C/W on JESD51-7 board).
| 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 1µF ceramic decoupling to PGND near the pin. |
| 3 BOOT | High-side gate driver supply | Connected to SW via 0.1µF bootstrap capacitor; enables HS-FET drive above VIN during conduction. |
| 4 FREQ | Frequency configuration | Resistor-to-AGND sets fSW; 86.6kΩ yields 415kHz, 34.8kΩ yields 1MHz, 15kΩ yields 2.2MHz. |
| 5 VCC | Bias regulator output | Internal 5V LDO output; requires ≥1µF ceramic capacitor to AGND for stable gate driver operation. |
| 6 AGND | Analog ground reference | Separate ground for feedback and control circuitry; tied to PGND at single point near IC. |
| 7 FB | Feedback input | 0.8V reference input; connects to resistor divider (adjustable) or directly to VOUT (fixed-output versions). |
| 8 PG | Open-drain power good | Indicates VOUT within ±5.5% window; requires external pull-up for microcontroller monitoring or reset assertion. |
| 9 EN | Enable control | Active-high logic input; 1.02V threshold ensures robust noise immunity in automotive environments. |
| 12 SW | Switch node | Connection point between HS-FET source and LS-FET drain; critical for layout-minimize loop area with output capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| 42V Load Dump Tolerance | Withstands ISO16750-2 pulse 5a transients without latch-up or parameter shift-eliminates need for external TVS in most cases. |
| Automotive Cold-Crank Support | Operates down to 3.1V input with LOD mode; maintains regulation during engine start when battery dips below 6V. |
| Wettable Flank QFN Package | Enables automated optical inspection (AOI) of solder joints on production lines-critical for AEC-Q100-compliant manufacturing. |
| Hiccup Over-Current Protection | Enters safe restart cycle upon current limit violation-prevents thermal runaway during short-circuit or overload events. |
| CISPR25 Class 5 Compliance | Meets stringent automotive EMC requirements without additional shielding or complex filtering-reduces BOM cost and board space. |
Applications
| Automotive Infotainment | Advanced Driver Assistance Systems (ADAS) |
|---|---|
|
Use Scenario: Powering SoC, display controller, and audio DSP in head-unit systems subject to wide input voltage swings and EMI constraints. IC Role / Device Role / Timing Role: Primary 5V or 3.3V buck regulator supplying core logic rails with tight load regulation (<±0.1%) and fast transient response. Use Value: 20μA sleep-mode IQ extends standby time; 42V tolerance avoids external protection components; wettable flanks ensure solder joint reliability in high-vibration environments. |
Use Scenario: Supplying radar sensor modules, camera ISPs, and domain controllers requiring ultra-low noise and high reliability. IC Role / Device Role / Timing Role: Secondary power rail generator for image signal processors and microcontrollers operating in harsh thermal conditions. Use Value: -40°C to +150°C TJ rating supports under-hood placement; CISPR25 Class 5 compliance eliminates post-design EMI fixes; LOD mode sustains operation during cranking. |
| Automotive Instrument Clusters | Industrial Power Systems |
|
Use Scenario: Driving TFT-LCD backlight drivers and microcontroller peripherals in digital dashboards with strict startup timing. IC Role / Device Role / Timing Role: Fixed-output 3.3V or 5V supply with PG signal enabling synchronized boot sequence and fail-safe diagnostics. Use Value: Power-good accuracy (±1.5% hysteresis) ensures deterministic system initialization; 1μA shutdown current meets OEM battery drain budgets. |
Use Scenario: Providing isolated auxiliary power in industrial gateways and telematics units deployed in vehicle fleets. IC Role / Device Role / Timing Role: Robust DC-DC stage converting 24V truck battery to 3.3V logic rail in environments with high ESD and conducted noise. Use Value: AEC-Q100 qualification provides proven reliability beyond standard industrial temp ranges; symmetric VIN pinout reduces common-mode noise coupling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4320GDE-AEC1-P | Same die, but in smaller QFN-12 (2mm×3mm) package with lower θJA (60°C/W) and 3.5W max power dissipation. | Better suited for space-constrained modules where thermal mass is limited; less copper area available for heat spreading. | Select GDE variant when PCB real estate is critical and peak load is ≤0.4A; choose GLE for higher thermal margin and manufacturability. |
| TI LM61480-Q1 | 0.8A rated, 3.5V–36V input, 15µA IQ, no integrated FSS or wettable flanks; requires external compensation. | Higher output current capability but larger solution size and no AOI-compatible package; lacks CISPR25 Class 5 validation. | Choose LM61480-Q1 only if >0.5A output is required and EMI filter design resources are available; MPQ4320GLE-AEC1-P offers faster time-to-market for Class 5 designs. |
Compared with MPQ4320GDE-AEC1-P, the GLE variant delivers 2.9% lower θJA and superior solder joint inspectability; versus LM61480-Q1, it trades 0.3A output headroom for guaranteed CISPR25 Class 5 compliance, integrated FSS, and AEC-Q100-qualified wettable flanks-reducing validation effort and production risk.
Availability
MPQ4320GLE-AEC1-P is available at Aetrix Electronics and suitable for automotive infotainment, ADAS sensor modules, and instrument cluster designs requiring stable component supply with full AEC-Q100 traceability and long-term lifecycle support.
Supply support for MPQ4320GLE-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, with design centers in the US, China, and Taiwan.
The MPQ4320 product line targets automotive-grade DC-DC conversion, emphasizing load dump resilience, ultra-low quiescent current, and EMC-ready integration for safety-critical electronic control units.
FAQ
What is the maximum allowable input voltage for continuous operation?
The MPQ4320GLE-AEC1-P supports continuous operation up to 36V input. Its absolute maximum rating is 42V for automotive load dump transients per ISO16750-2 Pulse 5a, but sustained operation above 36V may cause permanent damage or parametric shift.
Does this part support adjustable output voltage?
Yes-the MPQ4320GLE-AEC1-P supports both fixed-output versions (1V, 1.8V, 2.5V, 3V, 3.3V, 3.8V, 5V) and adjustable operation via external resistor divider on the FB pin, using a 0.8V internal reference with ±1% accuracy over temperature.
How is the switching frequency configured?
Switching frequency is set by connecting a resistor between the FREQ pin and AGND. Typical values include 86.6kΩ for 415kHz, 34.8kΩ for 1MHz, and 15kΩ for 2.2MHz. The device also applies ±10% frequency spread spectrum modulation to reduce EMI peaks.
What thermal performance can be expected in a typical automotive PCB layout?
On a standard 4-layer 2oz copper evaluation board (EVQ4320-L-00A), the MPQ4320GLE-AEC1-P achieves θJA = 34.3°C/W and θJC = 7.5°C/W. At 0.5A load and 12V input, case temperature rise is typically <12°C above ambient-well within the -40°C to +150°C junction limit.
Is the PG (power good) signal actively driven or open-drain?
The PG pin is an open-drain output requiring an external pull-up resistor to a valid logic voltage (e.g., 3.3V or 5V). It asserts high when VOUT is within 94.5%–105.5% of nominal and pulls low when outside that window, with 70µs rising and 60µs falling deglitch timing.
Can this IC operate during automotive cold-crank conditions?
Yes-the MPQ4320GLE-AEC1-P supports low-dropout (LOD) mode and starts up at minimum 3.9V VIN, sustaining regulation down to 3.1V input-meeting ISO16750-2 cold-crank requirements for 12V automotive systems.
What is the significance of the "E" suffix in the top marking?
The "E" in the top marking (e.g., "MP Y W 4320 LLL E") explicitly denotes the wettable flank feature-confirming the QFN package has solderable side walls for automated optical inspection (AOI) and improved solder joint reliability in automotive manufacturing.
MPQ4320GLE-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:
- 500mA
- Frequency - Switching:
- 350kHz ~ 1.8MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 12-QFN (3x4)
MPQ4320GLE-AEC1-P FAQ
1.How can I place an order for MPQ4320GLE-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4320GLE-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 MPQ4320GLE-AEC1-P reliable?
The price and inventory of MPQ4320GLE-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 MPQ4320GLE-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPQ4320GLE-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4320GLE-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4320GLE-AEC1-P?
MPQ4320GLE-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4320GLE-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 MPQ4320GLE-AEC1-P?
For technical support, including MPQ4320GLE-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4320GLE-AEC1-P requirements.
6.How does Aetrix verify that MPQ4320GLE-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPQ4320GLE-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 MPQ4320GLE-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPQ4320GLE-AEC1-P?
All MPQ4320GLE-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4320GLE-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 MPQ4320GLE-AEC1-P part is unused and in its original packaging.
Return procedure for MPQ4320GLE-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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