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Monolithic Power Systems Inc. MPQ4320CGLE-AEC1-Z
- Part No.:
- MPQ4320CGLE-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 12-PowerVFQFN
- Datasheet:
-
MPQ4320CGLE-AEC1-Z.pdf
- Description:
- IC REG BUCK ADJ 500MA 12QFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MPQ4320CGLE-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, 42V load dump tolerant, 0.5A synchronous step-down DC/DC converter in a QFN-12 (3mm×4mm) wettable flank package. It integrates 70mΩ high-side and 50mΩ low-side MOSFETs, supports 3.3V–36V input, delivers fixed or adjustable output (e.g., 3.3V/5V), and operates across –40°C to +150°C for automotive power rail regulation.
For engineers reviewing the MPQ4320CGLE-AEC1-Z datasheet, MPQ4320CGLE-AEC1-Z pinout, MPQ4320CGLE-AEC1-Z application, or MPQ4320CGLE-AEC1-Z equivalent, key selection criteria include 42V load dump survival, cold-crank support down to 3.1V VIN, 1μA shutdown current, CISPR25 Class 5 EMI compliance, and configurable 350kHz–2.5MHz switching frequency with spread-spectrum modulation.
Technical Context
The MPQ4320CGLE-AEC1-Z employs peak current mode control with frequency foldback during startup to prevent inductor current runaway. Its integrated HS/LS MOSFETs enable high-efficiency operation up to 0.5A, while low-dropout (LDO) mode and high duty cycle (98–99.5%) ensure stable output during automotive cold-crank events.
EMI performance is enhanced via symmetric VIN pinout, MeshConnect™ flip-chip packaging, and programmable frequency spread spectrum (±10% span at 15kHz). The device includes hiccup-mode over-current protection, thermal shutdown at 160–185°C, and precise power-good monitoring with ±1.5% threshold hysteresis relative to VREF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.3V to 36V continuous; withstands 42V automotive load dump transients per ISO16750 |
| Output Current | Up to 0.5A continuous; supported by integrated 70mΩ HS-FET and 50mΩ LS-FET |
| Switching Frequency | Configurable 350kHz–2.5MHz via external resistor; ±10% spread-spectrum modulation enabled |
| Shutdown Current | 1μA typical; enables ultra-low-power battery backup operation in always-on automotive systems |
| Operating Temperature | –40°C to +150°C junction range; AEC-Q100 Grade 1 qualified for under-hood deployment |
| Power Good Accuracy | Monitors VOUT within ±5.5% of nominal; asserts open-drain PG when 94.5%–105.5% of target |
| Minimum On/Off Time | 65ns tON_MIN and 50ns tOFF_MIN; supports high VIN/VOUT ratios and high-frequency designs |
Pinout & Package
MPQ4320CGLE-AEC1-Z is housed in a thermally enhanced QFN-12 (3mm×4mm) package with wettable flanks for automated optical inspection (AOI) and improved solder joint reliability. The package features exposed thermal pad connected internally to PGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 11 PGND | Power ground reference | Primary return path for high-current switching loop; must be low-inductance connection to thermal pad |
| 2, 10 VIN | Main input supply | Dual pins reduce IR drop and EMI; each requires local 10µF ceramic decoupling to PGND |
| 3 BOOT | High-side gate driver supply | Connected via 0.1µF capacitor to SW; supplies charge pump for HS-FET turn-on |
| 4 FREQ | Frequency configuration | Resistor-to-AGND sets fSW: 86.6kΩ → 415kHz, 34.8kΩ → 1MHz, 15kΩ → 2.2MHz |
| 5 VCC | Bias regulator output | Internal LDO output (5V ±1%); requires ≥1µF ceramic cap to AGND for stability |
| 6 AGND | Analog ground reference | Separate low-noise ground for FB, PG, EN; tied to PGND at single point near IC |
| 7 FB | Feedback input | 0.8V reference; connects to resistor divider for adjustable output or directly to VOUT for fixed versions |
| 8 PG | Power good indicator | Open-drain output; pulled high externally; asserts after soft-start and remains active within ±5.5% VOUT |
| 9 EN | Enable control | Logic-level input: >1.02V = ON, <0.85V = OFF; no internal pull-up/pull-down required |
| 12 SW | Switch node | Drain of LS-FET and source of HS-FET; connects to inductor; high dV/dt node requiring tight layout |
Key Features
| Feature | Design Value |
|---|---|
| 42V Load Dump Tolerance | Withstands transient surges per ISO16750-2 without latch-up or degradation; eliminates need for external TVS |
| Cold-Crank Operation | Maintains regulation down to 3.1V VIN in LDO mode; supports engine start-up in 12V automotive systems |
| CISPR25 Class 5 Compliance | Passes conducted/radiated emissions testing with standard filter design; reduces EMC debug time |
| Wettable Flank Packaging | Enables AOI-compatible solder joint inspection on bottom-side terminations; improves manufacturing yield |
| Thermal Shutdown Hysteresis | 20°C hysteresis (160°C trip, 140°C recovery); prevents thermal cycling instability in high-ambient environments |
Applications
| Automotive Infotainment | Instrument Clusters |
|---|---|
Use Scenario: Powering display backlight drivers and SoC I/O rails in head units with wide input voltage variation. IC Role / Device Role / Timing Role: Primary 5V/3.3V buck regulator supplying noise-sensitive digital logic and analog interfaces. Use Value: 42V load dump tolerance eliminates external clamping; 1μA ISD extends battery life during vehicle sleep mode. |
Use Scenario: Generating stable 3.3V supply for TFT LCD controllers and CAN transceivers in digital dashboards. IC Role / Device Role / Timing Role: High-reliability point-of-load converter operating continuously across –40°C to +125°C ambient. Use Value: AEC-Q100 Grade 1 qualification ensures long-term reliability; low dropout mode sustains output during cranking. |
| ADAS Camera Modules | Automotive Telematics |
Use Scenario: Providing regulated 1.8V/2.5V rails for image signal processors and MIPI interfaces in surround-view cameras. IC Role / Device Role / Timing Role: Compact, low-noise DC/DC stage preceding LDOs for sensor and interface power domains. Use Value: 65ns minimum on-time enables high-frequency operation with small inductors; spread-spectrum reduces EMI coupling into image paths. |
Use Scenario: Supplying 5V to cellular modems and GNSS receivers in telematics control units (TCUs) with extended temperature requirements. IC Role / Device Role / Timing Role: Input-stage buck converter handling battery transients and reverse-polarity protection upstream. Use Value: Symmetric VIN pinout minimizes PCB loop area; MeshConnect™ package lowers θJA to 34.3°C/W for passive cooling. |
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 |
|---|---|---|---|
| MPQ4320CGDE-AEC1-Z | Same die, QFN-12 (2mm×3mm) package; higher θJA (60°C/W vs. 50°C/W) | Better suited for space-constrained layouts where thermal margin exceeds 3.6W dissipation limit | Select when board area is critical and peak load current remains ≤0.4A at TA = 85°C |
| TPS62933RTER | 0.6A rating, 3V–18V input, 1.8V–5.5V adjustable output; no load dump rating | Lacks 42V surge capability and AEC-Q100 Grade 1; intended for non-under-hood industrial use | Choose only for non-automotive applications requiring higher output current and lower quiescent current (250nA) |
Compared with MPQ4320CGLE-AEC1-Z, the CGDE variant trades thermal performance for footprint reduction, while the TPS62933 offers higher current but forfeits automotive surge robustness and temperature grade - making the MPQ4320CGLE-AEC1-Z uniquely balanced for under-hood 12V system regulation.
Availability
MPQ4320CGLE-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment, instrument clusters, and ADAS camera modules requiring stable component supply with full AEC-Q100 traceability and long-lifecycle support.
Supply support for MPQ4320CGLE-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.
The MPQ4320C product line delivers compact, AEC-Q100-qualified DC/DC converters optimized for harsh automotive environments - emphasizing load dump resilience, cold-crank operation, and EMI robustness in minimal footprint packages.
FAQ
What is the maximum allowable input voltage for continuous operation?
The MPQ4320CGLE-AEC1-Z supports continuous operation up to 36V input. It is specifically rated to survive 42V automotive load dump transients per ISO16750-2, but sustained operation above 36V may trigger over-voltage protection (OVP rising threshold is 35.5–40V) and cause shutdown.
Does this part support adjustable output voltage?
Yes - the MPQ4320CGLE-AEC1-Z supports both fixed-output versions (1V, 1.8V, 2.5V, 3V, 3.3V, 3.8V, 5V) and adjustable operation. For adjustable use, connect the FB pin to a resistor divider between VOUT and AGND; the internal reference is 0.8V ±1%.
How is the switching frequency configured?
Switching frequency is set using an external resistor between the FREQ pin and AGND. Typical values include 86.6kΩ for 415kHz, 34.8kΩ for 1MHz, and 15kΩ for 2.2MHz. Frequency spread spectrum (±10% modulation at 15kHz) is enabled by default and cannot be disabled.
What thermal performance can be expected in the QFN-12 (3mm×4mm) package?
On a standard 4-layer 2oz copper evaluation board (EVQ4320C-L-00A), the MPQ4320CGLE-AEC1-Z achieves θJA = 50°C/W (JESD51-7) and measured θJA = 34.3°C/W. At 0.5A load and 12V input, case temperature rise is typically ≤12°C above ambient at 25°C.
Is the PG pin actively driven or open-drain?
The PG pin is an open-drain output. It requires an external pull-up resistor (typically 10kΩ to VOUT or bias rail) to assert a logic-high signal when VOUT is within 94.5%–105.5% of its nominal value. When out of regulation, PG pulls low via an internal NMOS switch capable of sinking ≥1mA.
Can the device operate in forced continuous conduction mode (FCCM)?
Yes - FCCM is enabled by connecting the MODE pin (not present on MPQ4320C; internal default) to support constant-frequency operation at light loads. This avoids audible switching noise and maintains predictable EMI behavior across the full load range, including zero-load conditions.
What is the minimum recommended output capacitance?
MPS recommends ≥22µF total output capacitance for stable operation. The datasheet shows validated designs using two 22µF X5R/X7R ceramics (47µF total) with low ESR. Lower capacitance increases output ripple and may affect load transient response, especially at high switching frequencies.
MPQ4320CGLE-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:
- 500mA
- 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 (3x4)
MPQ4320CGLE-AEC1-Z FAQ
1.How can I place an order for MPQ4320CGLE-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4320CGLE-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 MPQ4320CGLE-AEC1-Z reliable?
The price and inventory of MPQ4320CGLE-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 MPQ4320CGLE-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ4320CGLE-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4320CGLE-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4320CGLE-AEC1-Z?
MPQ4320CGLE-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4320CGLE-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 MPQ4320CGLE-AEC1-Z?
For technical support, including MPQ4320CGLE-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4320CGLE-AEC1-Z requirements.
6.How does Aetrix verify that MPQ4320CGLE-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ4320CGLE-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 MPQ4320CGLE-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ4320CGLE-AEC1-Z?
All MPQ4320CGLE-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4320CGLE-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 MPQ4320CGLE-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ4320CGLE-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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