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Monolithic Power Systems Inc. MPQ4430GL-AEC1-Z
- Part No.:
- MPQ4430GL-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 16-PowerVQFN
- Datasheet:
-
MPQ4430GL-AEC1-Z.pdf
- Description:
- IC REG BUCK ADJ 3.5A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,516
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Product details
Overview
MPQ4430GL-AEC1-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 automotive battery-powered systems requiring cold-crank support and high light-load efficiency.
For engineers reviewing the MPQ4430GL-AEC1-Z datasheet, MPQ4430GL-AEC1-Z pinout, MPQ4430GL-AEC1-Z application, or MPQ4430GL-AEC1-Z equivalent, key selection criteria include its AEC-Q100 qualification, QFN-16 wettable flank package, valley-current OCP with hiccup protection, low-dropout mode, and PG indicator - all critical for automotive power rail design, ADAS domain controllers, and infotainment subsystems.
Technical Context
The MPQ4430GL-AEC1-Z employs current-mode control with valley-current detection for fast transient response and precise over-current protection. Its dual-mode operation-selectable forced CCM or AAM-is determined by SYNC pin state at startup, enabling deterministic EMI behavior or ultra-low IQ operation depending on load profile.
It integrates internal bias regulation (VCC = 5V), supports external BIAS supply (5V–18V) to reduce dissipation, and implements thermal shutdown (170°C) with 20°C hysteresis. The 80ns minimum on-time and 0.8V reference enable stable 3.3V/3.8V/5V fixed-output or adjustable configurations down to sub-1V with external resistive feedback.
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 (36V) transients. |
| Output Current | 3.5A continuous - sustained delivery under 125°C junction temperature with QFN-16 thermal resistance θJA = 43°C/W (EV board). |
| Quiescent Current | 10μA in sleep mode - enables >1-year battery standby in always-on automotive modules (e.g., telematics, gateway wake logic). |
| Switching Frequency | 350kHz to 2.5MHz - programmable via FREQ pin resistor; allows EMI optimization and inductor size reduction. |
| Feedback Reference | 0.800V ±1% - precision reference enabling ±1% output accuracy for 3.3V/3.8V/5V fixed versions or custom VOUT. |
| Protection Features | OCP (valley-current detection), hiccup-mode short-circuit response, thermal shutdown (170°C), UVLO (2.8V rising), PG indicator. |
| Package | QFN-16 (3mm × 4mm) with wettable flanks - supports automated optical inspection (AOI) and improves solder joint reliability in automotive reflow. |
Pinout & Package
MPQ4430GL-AEC1-Z is housed in a thermally enhanced QFN-16 (3mm × 4mm) package with exposed thermal pad and wettable flanks for automotive-grade solder joint inspection and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PHASE | Synchronization phase select | Configures SYNC output phase: high = in-phase, low = 180° out-of-phase; tie to GND if unused. |
| 2 VIN | Main power input | Supplies control circuitry and high-side switch; requires local 10µF ceramic decoupling to PGND. |
| 3,10 SW | Switch node | Drives external inductor; internally connected pins reduce parasitic inductance and improve EMI. |
| 4,9 PGND | Power ground | High-current return path for MOSFETs; must be tied to thermal pad and use multiple vias to inner ground planes. |
| 5 EN | Enable control | Active-high logic input (1.05V threshold); enables soft-start and disables all switching when pulled low. |
| 6 SYNC | Frequency sync / mode select | Accepts 350kHz–2.5MHz external clock; also selects CCM (high) or AAM (low/floating) at startup. |
| 7 PG | Power good indicator | Open-drain output asserting high when VOUT is within ±10% of target; requires external pull-up. |
| 8 BIAS | External bias supply | Optional 5V–18V supply to reduce internal LDO loss and improve efficiency above 15V VIN. |
| 11 BST | Bootstrap supply | Connects 0.1µF ceramic capacitor between BST and SW to drive high-side MOSFET gate. |
| 12 VCC | Internal bias rail | 5V regulated supply for control logic; requires ≥1µF decoupling to AGND. |
| 13 AGND | Analog ground | Reference for FB, SS, and error amplifier; must be separated from PGND and joined at single point. |
| 14 SS | Soft-start timing | 10µA current source charges external capacitor; floating defaults to 0.7ms internal soft-start. |
| 15 FB | Feedback input | 0.8V reference node; connect to resistor divider (adjustable) or directly to VOUT (fixed versions). |
| 16 FREQ | Frequency programming | Resistor-to-GND sets fSW: 180kΩ = ~475kHz, 82kΩ = ~1MHz, 27kΩ = ~2.5MHz. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C ambient operation with full automotive stress testing (HTOL, TC, UHAST). |
| Advanced Asynchronous Mode (AAM) | Reduces switching frequency at light load to minimize gate and switching losses, achieving >85% efficiency at 1mA output. |
| Low-dropout mode | Maintains regulation during cold-crank (VIN down to 4.5V) by extending high-side duty cycle beyond 95%. |
| Wettable flank QFN package | Enables AOI-compatible solder joint inspection and improves mechanical reliability under thermal cycling. |
| Valley-current OCP with hiccup | Detects overcurrent on low-side MOSFET; enters low-duty-cycle hiccup mode to limit average fault current to <100mA. |
| EMI-optimized design | Meets CISPR 25 Class 5 radiated/conducted emissions limits with standard layout and minimal external filtering. |
Applications
| ADAS Camera Power Supply | Automotive Infotainment Core Rail |
|---|---|
Use Scenario: Powers 3.3V image sensor and ISP in front-facing ADAS camera module operating from 9V–16V battery with cold-crank dips to 4.5V. IC Role / Device Role / Timing Role: Primary buck regulator providing stable, low-noise 3.3V rail with PG monitoring and fast load-step response. Use Value: AAM mode extends battery life during vehicle sleep; low dropout mode ensures uninterrupted imaging during engine start. |
Use Scenario: Generates 5V core supply for SoC and DDR memory in head-unit infotainment system with variable load (100mA–3A). IC Role / Device Role / Timing Role: High-efficiency synchronous buck converter with SYNC input synchronized to SoC clock to suppress beat frequencies. Use Value: Programmable fSW avoids noise coupling into audio band; wettable flanks ensure long-term solder joint integrity in high-vibration environments. |
| Body Control Module (BCM) Subsystem | Telematics Control Unit (TCU) Always-On Rail |
Use Scenario: Supplies 3.8V microcontroller and CAN transceiver in BCM exposed to wide temperature (-40°C to +105°C) and load dump events. IC Role / Device Role / Timing Role: Input-protected, thermally robust buck regulator with integrated OCP and thermal shutdown. Use Value: 36V absolute max VIN rating and 170°C thermal shutdown prevent damage during load dump; AEC-Q100 Grade 1 ensures functional safety compliance. |
Use Scenario: Provides 3.3V always-on rail for TCU's cellular modem and GNSS receiver, drawing 20μA in deep sleep and 1.2A during data transmission. IC Role / Device Role / Timing Role: Ultra-low-IQ buck converter enabling >10-year battery backup without recharge in disconnected state. Use Value: 10μA sleep-mode IQ minimizes self-discharge; PG signal triggers wake-up only when VOUT is fully regulated. |
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 4.5A rating, fixed 2.1MHz fSW, no AAM; 15μA shutdown IQ vs. MPQ4430's 1μA. | Better suited for high-current, fixed-frequency EMI-constrained designs; lacks light-load efficiency optimization. | Select when peak current >3.5A or strict 2.1MHz synchronization is required; avoid where battery standby duration is critical. |
| TPS62903-Q1 | Lower 3A rating, 1.8V–6.5V VIN range, 2.5μA IQ in DCM; no AEC-Q100 Grade 1, only Grade 2. | Targeted at low-voltage automotive domains (e.g., ADAS sensors); insufficient for 12V/24V main rails. | Use only for sub-6.5V applications with relaxed temperature requirements; not suitable for cold-crank or full-battery-range use. |
Compared with LM61480-Q1 and TPS62903-Q1, MPQ4430GL-AEC1-Z uniquely balances AEC-Q100 Grade 1 compliance, 36V input capability, 10μA sleep IQ, and selectable AAM/CCM - making it optimal for cost-sensitive, wide-input, battery-backed automotive subsystems requiring both efficiency and ruggedness.
Availability
MPQ4430GL-AEC1-Z is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment head-units, body control units, and telematics control units requiring stable component supply with full AEC-Q100 traceability and extended temperature support.
Supply support for MPQ4430GL-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 analog and power ICs, with over two decades of leadership in DC/DC conversion, motor drivers, and LED lighting solutions.
The MPQ4430 belongs to MPS's automotive-qualified power management portfolio, engineered specifically for harsh-environment automotive subsystems demanding AEC-Q100 reliability, wide input voltage tolerance, and ultra-low quiescent current.
FAQ
What is the difference between MPQ4430GL-AEC1-Z and MPQ4430GLE-AEC1-Z?
The "E" suffix denotes wettable flank packaging, which enables automated optical inspection (AOI) of solder joints - critical for automotive manufacturing quality control. Both share identical electrical specs and AEC-Q100 Grade 1 qualification, but MPQ4430GLE-AEC1-Z adds process-level reliability verification for solder joint integrity under thermal cycling.
Can MPQ4430GL-AEC1-Z operate with 4.5V input during cold-crank?
Yes. Its low-dropout mode extends high-side duty cycle beyond 95%, maintaining regulation down to 4.5V input while delivering full 3.5A output. This is validated per AEC-Q100 cold-crank test profiles and confirmed in typical performance curves at VIN = 4.5V.
How is soft-start time configured on MPQ4430GL-AEC1-Z?
Soft-start is set by an external capacitor from SS (pin 14) to AGND. The device sources a precise 10µA current into this capacitor; tSS ≈ (VREF × CSS) / 10µA. Floating SS enables a factory-trimmed 0.7ms soft-start, eliminating external components for space-constrained designs.
Does MPQ4430GL-AEC1-Z require an external bootstrap capacitor?
Yes. A 0.1µF X7R ceramic capacitor must be placed between BST (pin 11) and SW (pins 3/10). This capacitor supplies gate drive energy for the high-side MOSFET and must be located within 2mm of the pins to minimize ringing and EMI.
What is the purpose of the BIAS pin, and when should it be used?
The BIAS pin (pin 8) accepts an external 5V–18V supply to power the internal gate drivers, bypassing the internal VCC LDO. Use it when VIN exceeds 15V to reduce power dissipation and improve efficiency - especially beneficial in high-input, high-temperature automotive applications.
Is MPQ4430GL-AEC1-Z compatible with lead-free and RoHS-compliant assembly processes?
Yes. MPQ4430GL-AEC1-Z is fully lead-free, halogen-free, and RoHS-compliant. Its QFN-16 package is rated MSL Level 1 (unlimited floor life) and qualified for standard Pb-free reflow profiles up to 260°C peak temperature.
How does the PG (power good) signal behave during startup and fault conditions?
PG asserts high after soft-start completes and VOUT reaches 90% of target (rising threshold), with a 30µs deglitch timer. It deasserts low when VOUT falls below 84% (falling threshold), with 50µs deglitch. During over-current or thermal shutdown, PG goes low within microseconds to signal fault condition.
MPQ4430GL-AEC1-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 16-PowerVQFN
- 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):
- 36V
- Current - Output:
- 3.5A
- Frequency - Switching:
- 350kHz ~ 1.5MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x4)
MPQ4430GL-AEC1-Z FAQ
1.How can I place an order for MPQ4430GL-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4430GL-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 MPQ4430GL-AEC1-Z reliable?
The price and inventory of MPQ4430GL-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 MPQ4430GL-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ4430GL-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4430GL-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4430GL-AEC1-Z?
MPQ4430GL-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4430GL-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 MPQ4430GL-AEC1-Z?
For technical support, including MPQ4430GL-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4430GL-AEC1-Z requirements.
6.How does Aetrix verify that MPQ4430GL-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ4430GL-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 MPQ4430GL-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ4430GL-AEC1-Z?
All MPQ4430GL-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4430GL-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 MPQ4430GL-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ4430GL-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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