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Monolithic Power Systems Inc. MPQ4430GL-Z
- Part No.:
- MPQ4430GL-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 16-PowerVQFN
- Datasheet:
-
MPQ4430GL-Z.pdf
- Description:
- IC REG 3.5A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,008
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Product details
Overview
MPQ4430GL-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, synchronous step-down DC/DC converter with integrated 90mΩ high-side and 40mΩ low-side MOSFETs, delivering up to 3.5A output current across a 3.3V–36V input range. It features programmable switching frequency (350kHz–2.5MHz), 10μA sleep-mode quiescent current, and advanced asynchronous mode (AAM) for high light-load efficiency - deployed in automotive infotainment power rails and ADAS camera modules.
For engineers reviewing the MPQ4430GL-Z datasheet, MPQ4430GL-Z pinout, MPQ4430GL-Z application, or MPQ4430GL-Z equivalent, key selection criteria include cold-crank low-dropout operation, valley-current OCP with hiccup protection, PG indicator timing accuracy (±5% VREF), and QFN-16 wettable flank compatibility with automated optical inspection (AOI).
Technical Context
The MPQ4430GL-Z employs current-mode PWM control with valley-current over-current protection and thermal shutdown at 170°C. Its dual-mode operation-selectable forced CCM or AAM-is configured via SYNC pin logic state prior to startup, enabling deterministic ripple performance or ultra-low IQ (<10μA) under light load.
It integrates internal bias regulation (VCC = 5V), supports external BIAS supply (5V–18V) to reduce dissipation, and provides 80ns minimum on-time for high-duty-cycle operation during automotive cold-crank (VIN as low as 3.3V). The feedback reference is trimmed to 800mV ±1.5% at +25°C, with PG threshold set at 85–95% (rising) and 105–115% (falling) of VREF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.3V to 36V - supports full automotive battery range including cold-crank (4.5V) and load-dump (40V abs max). |
| Output Current | 3.5A continuous - sustained at TJ ≤ 125°C with QFN-16 (3mm×4mm) package and θJA = 43°C/W on EV board. |
| Quiescent Current | 10μA in sleep mode - enables >1-year battery standby in always-on vehicle telematics modules. |
| Switching Frequency | 350kHz to 2.5MHz - programmable via FREQ pin resistor; enables EMI optimization and compact magnetics design. |
| Feedback Reference | 800mV ±1.5% - precision reference enables <±1% output voltage accuracy with proper resistor divider layout. |
| Power Good Threshold | Rising: 85–95% VREF; Falling: 105–115% VREF - provides robust rail monitoring with 30µs deglitch for noise immunity. |
| Thermal Shutdown | 170°C with 20°C hysteresis - ensures fault-tolerant operation without latch-up; recovers automatically after cooldown. |
Pinout & Package
MPQ4430GL-Z is housed in a thermally enhanced QFN-16 (3mm × 4mm) package with wettable flanks for solder joint inspection. Exposed thermal pad (Pin 11) must be connected to PCB ground plane via ≥4 thermal vias.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PHASE | Synchronization phase select | Drives high for in-phase sync with external clock; low for 180° out-of-phase; tie to GND if unused. |
| 2 VIN | Main input supply | Accepts 3.3V–36V; requires local 10µF ceramic decoupling close to pin to suppress switching noise. |
| 3,10 SW | Switch node | High-frequency drain connection of internal HS-FET; shared between Pins 3 and 10 for current sharing and layout symmetry. |
| 4,9 PGND | Power ground return | Low-impedance path for switch current; must be solid copper pour tied to thermal pad with multiple vias. |
| 5 EN | Enable control | Active-high logic (1.05V threshold); 120mV hysteresis prevents chatter during slow-rising enable signals. |
| 6 SYNC | Frequency sync / mode select | Configures CCM (high) or AAM (low/floating) pre-startup; accepts 350kHz–2.5MHz external clock. |
| 7 PG | Open-drain power-good flag | Asserts high when VOUT is within ±10% of target; requires external pull-up (typically 10kΩ to VOUT). |
| 8 BIAS | External bias supply input | Optional 5V–18V supply to bypass internal LDO; reduces thermal stress and improves efficiency at high VIN. |
| 11 BST | Bootstrap supply | Connect 0.1µF X7R ceramic between BST and SW to sustain HS-FET gate drive during 100% duty cycle. |
| 12 VCC | Internal bias regulator output | 5V regulated supply; requires ≥1µF ceramic decoupling to AGND for stable gate driver operation. |
| 13 AGND | Analog ground reference | Separate from PGND; connects FB, SS, and error amplifier; must be routed away from noisy power traces. |
| 14 SS | Soft-start timing control | 10µA current source charges external capacitor; floating defaults to 0.7ms internal soft-start. |
| 15 FB | Feedback voltage sense | 800mV reference point; for fixed-output variants (e.g., MPQ4430GLE-5-AEC1), connect directly to VOUT. |
| 16 FREQ | Switching frequency programming | Resistor-to-GND sets fSW: 180kΩ → ~475kHz, 82kΩ → ~1MHz, 27kΩ → ~2.5MHz. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Rated for −40°C to +125°C junction temperature - validated for front-end automotive ECUs and radar modules. |
| Advanced Asynchronous Mode (AAM) | Reduces light-load IQ to 10μA by dynamically scaling fSW and entering sleep mode - extends battery life in parked-state systems. |
| Valley-current OCP with hiccup | Detects inductor current at LS-FET turn-off; triggers foldback and hiccup restart to limit average fault current to <100mA. |
| Low dropout & high-duty operation | Maintains regulation down to VIN = VOUT + 0.5V (typ.) - sustains 5V output during 4.5V cold-crank events. |
| Wettable flank QFN-16 | Enables automated AOI of solder joints - critical for zero-defect automotive manufacturing and IPC-A-610 Class 3 compliance. |
Applications
| Automotive Infotainment | ADAS Camera Power |
|---|---|
|
Use Scenario: Powering SoC core rails (e.g., NXP i.MX8) and display interface circuitry in head units. IC Role / Device Role / Timing Role: Primary 5V/3.5A buck regulator with PG monitoring and SYNC synchronization to system clock tree. Use Value: AEC-Q100 qualification ensures reliability across temperature cycling; 10μA sleep IQ enables quick-wake functionality without battery drain. |
Use Scenario: Supplying image sensor (e.g., Sony IMX415) and ISP in surround-view camera modules. IC Role / Device Role / Timing Role: Fixed 3.3V output regulator with low-noise operation and fast transient response to pixel burst loads. Use Value: 80ns min on-time supports 3.3V output from 6V battery input during engine start; PG signal validates sensor readiness before frame capture. |
| Telematics Control Unit (TCU) | Automotive Gateway ECU |
|
Use Scenario: Generating 3.3V for LTE/C-V2X modems and GNSS receivers in always-connected TCUs. IC Role / Device Role / Timing Role: High-efficiency buck stage operating in AAM during cellular idle states and forced CCM during data transmission bursts. Use Value: Dual-mode operation achieves >85% efficiency at 1mA load (AAM) and <20mVpp ripple at 1A (CCM), meeting 3GPP RF coexistence requirements. |
Use Scenario: Powering multi-core microcontrollers (e.g., Infineon AURIX TC3xx) and CAN FD transceivers in domain controllers. IC Role / Device Role / Timing Role: Input-stage buck converter accepting wide 5–36V supply; provides clean 5V for internal LDOs and isolated interfaces. Use Value: 36V abs max rating and 170°C thermal shutdown protect against load dump transients; wettable flanks ensure solder joint integrity in high-vibration environments. |
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 IQ (15μA sleep), fixed 2.1MHz fSW, no AAM; requires external bootstrap diode. | Lacks programmable frequency and valley-current OCP; less flexible for EMI-sensitive layouts. | Prefer when fixed high-frequency operation simplifies filter design and thermal margin is ample. |
| TPS62933-Q1 | Lower IQ (2.5μA), 1.8V–36V input, but only 3A output; no wettable flank option in QFN. | Insufficient current for 3.5A ADAS camera rails; AOI-unfriendly package limits automotive production yield. | Select only for sub-3A applications where ultra-low IQ outweighs current capability and manufacturability. |
Compared with LM61480-Q1 and TPS62933-Q1, MPQ4430GL-Z uniquely balances AEC-Q100 Grade 1 compliance, 3.5A output, programmable frequency, AAM efficiency, and wettable flank packaging - making it optimal for cost-sensitive, high-reliability automotive power stages requiring both flexibility and production robustness.
Availability
MPQ4430GL-Z is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and telematics control units requiring stable component supply with AEC-Q100 traceability and long-term lifecycle support.
Supply support for MPQ4430GL-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 analog and power ICs, with over two decades of expertise in DC/DC conversion and automotive-grade power solutions.
The MPQ4430 product line targets automotive subsystems demanding high reliability, wide input range, and ultra-low quiescent current - specifically engineered for infotainment, ADAS, and body electronics where thermal, EMI, and qualification rigor are non-negotiable.
FAQ
What is the maximum allowable input voltage for MPQ4430GL-Z?
The absolute maximum input voltage is 40V, but recommended operating range is 3.3V to 36V. Sustained operation above 36V risks exceeding internal MOSFET breakdown limits and may trigger thermal shutdown even with adequate heatsinking. Automotive load-dump transients must be clamped externally per ISO 7637-2 Pulse 5a.
Does MPQ4430GL-Z support fixed-output voltage versions?
Yes - MPQ4430GL-Z is the base part number for the adjustable version, but Monolithic Power offers factory-trimmed fixed-output variants: MPQ4430GLE-38-AEC1 (3.8V) and MPQ4430GLE-5-AEC1 (5.0V). These require FB pin connected directly to VOUT and omit the external resistor divider.
How is the soft-start time configured?
Soft-start duration is set by an external capacitor from SS pin to AGND. The device sources a precise 10µA current into this capacitor; tSS ≈ (CSS × 0.8V) / 10µA. For example, 100nF yields ~8ms. Leaving SS floating activates the internal 0.7ms soft-start, which is not adjustable.
Can MPQ4430GL-Z operate without the BIAS pin connected?
Yes - BIAS can be left floating or tied to GND. In that case, the internal 5V LDO powers the gate drivers from VIN, increasing power dissipation at high input voltages. Connecting BIAS to a clean 5V–18V supply reduces thermal load and improves efficiency by up to 3% at VIN = 24V.
What is the purpose of the PHASE pin?
PHASE selects synchronization phase relative to the external SYNC clock: high = in-phase, low = 180° out-of-phase. This allows interleaving with other converters to reduce input/output ripple. If unused, PHASE must be tied to GND to prevent floating node noise coupling into sensitive analog circuitry.
Is MPQ4430GL-Z RoHS and halogen-free compliant?
Yes - MPQ4430GL-Z is lead-free, halogen-free, and fully compliant with EU RoHS Directive 2011/65/EU and JEDEC JS709. All wafer fabrication and assembly processes meet MPS's green policy, and material declarations are available upon request through Aetrix Electronics' compliance portal.
How does the power-good (PG) signal behave during undervoltage lockout?
PG goes low when EN is deasserted or when VIN falls below the UVLO threshold (2.4V–3.2V rising). It remains low until VIN exceeds the threshold plus hysteresis (150mV), EN is asserted, and VOUT stabilizes within ±10% of target for ≥30µs. PG does not assert during thermal shutdown unless VOUT remains in regulation.
MPQ4430GL-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- *
- Package/Case:
- 16-PowerVQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x4)
MPQ4430GL-Z FAQ
1.How can I place an order for MPQ4430GL-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4430GL-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 MPQ4430GL-Z reliable?
The price and inventory of MPQ4430GL-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ4430GL-Z is usually 5 days.
3.What payment methods are accepted for MPQ4430GL-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4430GL-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4430GL-Z?
MPQ4430GL-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4430GL-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 MPQ4430GL-Z?
For technical support, including MPQ4430GL-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4430GL-Z requirements.
6.How does Aetrix verify that MPQ4430GL-Z is sourced from the original manufacturer or authorized distributors?
All MPQ4430GL-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 MPQ4430GL-Z meets industry standards.
7.What is the process for return or replacement of MPQ4430GL-Z?
All MPQ4430GL-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4430GL-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 MPQ4430GL-Z part is unused and in its original packaging.
Return procedure for MPQ4430GL-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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