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Monolithic Power Systems Inc. MPQ4430GLE-38-AEC1-P
- Part No.:
- MPQ4430GLE-38-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 16-VQFN
- Datasheet:
-
MPQ4430GLE-38-AEC1-P.pdf
- Description:
- IC REG BUCK 3.8V 3.5A 16QFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MPQ4430GLE-38-AEC1-P from Monolithic Power Systems is a 36V, 3.5A synchronous step-down DC/DC converter with AEC-Q100 Grade 1 qualification, integrated 90mΩ high-side and 40mΩ low-side MOSFETs, 3.8V fixed output, and programmable 350kHz–2.5MHz switching frequency. It delivers high efficiency across automotive battery input ranges (3.3V–36V), supports cold-crank operation via low-dropout mode, and achieves 10µA quiescent current in sleep mode for battery-powered infotainment and ADAS subsystems.
For engineers reviewing the MPQ4430GLE-38-AEC1-P datasheet, MPQ4430GLE-38-AEC1-P pinout, MPQ4430GLE-38-AEC1-P application, or MPQ4430GLE-38-AEC1-P equivalent, key selection criteria include its AEC-Q100 Grade 1 compliance, wettable flank QFN-16 package for automated optical inspection, 3.8V ±2.5% output accuracy at 25°C, valley-current OCP with hiccup protection, and dual-mode (CCM/AAM) light-load efficiency optimization.
Technical Context
The MPQ4430GLE-38-AEC1-P employs current-mode control with valley-current over-current protection and thermal shutdown at 170°C. Its architecture integrates both power switches and supports external clock synchronization with selectable in-phase or 180° out-of-phase alignment-critical for multi-rail noise management in automotive ECUs.
It implements advanced asynchronous mode (AAM) that dynamically scales switching frequency under light load to reduce gate-driving and switching losses, while forced CCM mode ensures fixed-frequency operation and low output ripple during transient-heavy conditions such as radar sensor burst cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.3V to 36V - supports full automotive battery range including cold-crank (down to 3.3V) and load-dump transients. |
| Output Voltage | 3.8V fixed ±2.5% (at TJ = +25°C) - eliminates external feedback resistors, reducing BOM count and layout sensitivity. |
| Continuous Output Current | 3.5A - enables single-chip power delivery for microcontrollers, CAN transceivers, and camera modules without external boost stages. |
| Quiescent Current | 10µA in sleep mode - extends battery life in always-on vehicle networks (e.g., telematics wake-on-LIN). |
| Switching Frequency | 350kHz to 2.5MHz (programmable via FREQ pin resistor) - allows EMI tuning and inductor size optimization for space-constrained modules. |
| Protection Features | OCP with valley-current detection + hiccup mode, thermal shutdown (170°C), UVLO (2.8V rising), PG indicator - ensures fault resilience in harsh automotive environments. |
| Package | QFN-16 (3mm × 4mm) with wettable flanks - enables AOI-compatible solder joint inspection per IPC-A-610 Class 3 requirements. |
Pinout & Package
MPQ4430GLE-38-AEC1-P is housed in a thermally enhanced QFN-16 (3mm × 4mm) package with exposed thermal pad and wettable flank leads for reliable reflow and post-solder inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PHASE | Synchronization phase select | Drives high for in-phase sync with external clock; drives low for 180° out-of-phase-enables interleaving with adjacent rails to reduce input ripple. |
| 2 VIN | Main input supply | Accepts 3.3V–36V; requires local 10µF ceramic decoupling to suppress switching noise on shared battery rails. |
| 3,10 SW | Power switch node | Internally connected high-side drain / low-side source node; must be routed with minimal loop area to limit EMI and voltage spikes. |
| 4,9 PGND | Power ground return | Separate from AGND; requires dedicated copper pour and multiple vias to thermal pad to minimize ground bounce during 3.5A switching transitions. |
| 5 EN | Enable control | Active-high logic input (1.05V threshold); used for system-level power sequencing and wake-up control in low-power domains. |
| 6 SYNC | Frequency sync & mode select | Configures CCM (SYNC ≥1.8V at startup) or AAM (SYNC ≤0.4V/floating); also accepts external clock 250kHz above programmed fSW. |
| 7 PG | Power good indicator | Open-drain output asserting high when VOUT is within ±10% of 3.8V; interfaces directly with MCU reset or supervisor ICs. |
| 8 BIAS | Efficiency-boosting bias supply | Optional 5V–18V external supply reduces internal LDO dissipation-improves efficiency by ~2% at 12V input / 3.5A load. |
| 11 BST | High-side gate driver supply | Requires 0.1µF ceramic capacitor between BST and SW to sustain gate drive during HS-FET conduction; critical for stable 90mΩ RDS(on) operation. |
| 12 VCC | Internal bias regulator output | Supplies control circuitry; requires ≥1µF decoupling to AGND to prevent instability during fast load transients. |
| 13 AGND | Analog reference ground | Isolated ground for FB, SS, and error amplifier; must connect to PGND at single point near VCC capacitor to avoid noise coupling. |
| 14 SS | Soft-start timing | 10µA current source charges external capacitor; sets ramp time for controlled inrush limiting-prevents bus collapse during multi-rail startup. |
| 15 FB | Feedback input | Internally tied to 3.8V output in fixed-version parts; no external divider required-eliminates resistor tolerance errors and trace sensitivity. |
| 16 FREQ | Switching frequency set | Resistor-to-ground sets fSW: 180kΩ → 475kHz, 82kΩ → 1MHz, 27kΩ → 2.5MHz-enables EMI spread-spectrum tuning per CISPR-25 Class 5. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Rated for −40°C to +125°C junction temperature-validates reliability for engine bay, transmission, and ADAS sensor applications. |
| Wettable flank QFN-16 package | Enables automated optical inspection of solder fillets-reduces field failure risk in high-volume automotive manufacturing. |
| Advanced Asynchronous Mode (AAM) | Reduces light-load quiescent current to 10µA and maintains >85% efficiency at 1mA load-extends battery runtime in parked-mode systems. |
| Low dropout mode | Maintains regulation down to VIN = VOUT + 0.5V-supports cold-crank operation at 6V input while delivering stable 3.8V to safety-critical MCUs. |
| Valley-current OCP with hiccup | Detects overcurrent at inductor zero-crossing and enters low-duty-cycle restart-limits average fault current to <100mA during short-circuit events. |
| Programmable soft-start | External capacitor sets ramp time from 0.7ms (internal default) up to 10ms-prevents overshoot and enables precise power sequencing with companion ICs. |
Applications
| Automotive Infotainment Head Unit | ADAS Camera Power Supply |
|---|---|
|
Use Scenario: Powers SoC, display interface, and audio codec in centralized head unit with 12V battery input and strict EMI limits. IC Role / Device Role / Timing Role: Primary 3.8V buck regulator delivering 3.5A with CISPR-25 Class 5 compliant radiated emissions. Use Value: Wettable flank package ensures solder joint reliability across thermal cycling; AAM mode cuts standby power by 60% vs. standard CCM. |
Use Scenario: Supplies image sensor and ISP in rear-view or surround-view camera module operating in engine compartment. IC Role / Device Role / Timing Role: High-efficiency 3.8V rail generator supporting −40°C to +105°C ambient with cold-crank hold-up. Use Value: Low dropout mode sustains 3.8V output during 6V battery dips; valley-current OCP prevents thermal runaway during lens motor stall. |
| Body Control Module (BCM) | Telematics Control Unit (TCU) |
|
Use Scenario: Powers microcontroller, LIN transceiver, and LED drivers in door module with variable input due to alternator ripple. IC Role / Device Role / Timing Role: Main 3.8V system rail with PG signal enabling safe MCU boot and watchdog reset coordination. Use Value: 10µA sleep current enables >1-year battery life in parked mode; SYNC pin allows interleaving with other rails to reduce input capacitor stress. |
Use Scenario: Provides regulated 3.8V supply for cellular modem, GNSS receiver, and secure element in always-connected TCU. IC Role / Device Role / Timing Role: Always-on power stage with EN-controlled wake-up and PG-monitored brownout recovery. Use Value: 1µA shutdown current minimizes parasitic drain; BIAS pin connection improves efficiency by 1.8% at 14V input-extending cellular session duration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS543320RTWR | 4.5V–18V input, 3A output, 2.2MHz fixed frequency, no AAM, non-AEC-Q100 | Limited to 18V input; lacks cold-crank support and automotive qualification | Use only in non-automotive industrial applications where input stays below 18V and AEC-Q100 is not required. |
| LM61480QRNXTQ1 | 3V–36V input, 4A output, 2.1MHz max, AEC-Q100 Grade 1, but 25µA IQ in sleep mode | Higher output current and same input range, but 2.5× higher quiescent current than MPQ4430GLE-38-AEC1-P | Prefer MPQ4430GLE-38-AEC1-P for ultra-low-IQ battery-backed systems; choose LM61480QRNXTQ1 only if >3.5A peak current is mandatory. |
Compared with TPS543320RTWR and LM61480QRNXTQ1, MPQ4430GLE-38-AEC1-P uniquely combines AEC-Q100 Grade 1, 10µA sleep IQ, wettable flank packaging, and 3.8V fixed output in a 3mm×4mm footprint-making it optimal for space- and efficiency-constrained automotive modules where qualification and low standby loss are non-negotiable.
Availability
MPQ4430GLE-38-AEC1-P is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and body control units requiring stable component supply with full AEC-Q100 traceability and long-term production support.
Supply support for MPQ4430GLE-38-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 analog and power ICs, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.
The MPQ4430 product line targets automotive-grade DC/DC conversion, emphasizing AEC-Q100 qualification, ultra-low quiescent current, and robust protection features for safety-critical and always-on vehicle subsystems.
FAQ
What is the purpose of the BIAS pin on MPQ4430GLE-38-AEC1-P?
The BIAS pin accepts an external 5V–18V supply to power the internal gate drivers and control circuitry, bypassing the internal LDO. When connected, it reduces power dissipation by ~150mW at 12V input and 3.5A load, improving full-load efficiency by up to 2.1% and lowering junction temperature-critical for thermally constrained automotive modules.
How does the MPQ4430GLE-38-AEC1-P handle cold-crank conditions?
It enters low-dropout mode when VIN drops near VOUT, maintaining regulation down to VIN = VOUT + 0.5V (i.e., ~4.3V at 3.8V output). Combined with 3.3V minimum input rating and UVLO hysteresis of 150mV, this ensures uninterrupted operation during automotive battery dips to 6V-verified per ISO 16750-2 Pulse 4a test profiles.
Can the MPQ4430GLE-38-AEC1-P be synchronized to an external clock?
Yes. Applying a 350kHz–2.5MHz square wave to the SYNC pin synchronizes the internal oscillator. The external clock must exceed the RFREQ-set frequency by ≥250kHz. Additionally, SYNC selects operating mode: high at startup forces CCM; low/floating enables AAM-allowing dynamic mode switching based on system load state.
What is the function of the PHASE pin?
The PHASE pin configures synchronization phase relative to the external SYNC signal: driven high for in-phase alignment, low for 180° out-of-phase. This enables interleaved operation with adjacent MPQ4430 devices to halve input ripple current and reduce required input capacitance-essential for multi-rail ECU designs.
Does MPQ4430GLE-38-AEC1-P require an external feedback resistor divider?
No. As a fixed-output variant, the FB pin is internally connected to the 3.8V output. External resistors are unnecessary-eliminating tolerance-induced output error, PCB layout sensitivity, and potential noise pickup on high-impedance feedback traces common in adjustable regulators.
How is thermal performance validated for automotive use?
Thermal shutdown triggers at 170°C (±10°C) with 20°C hysteresis, verified across −40°C to +125°C junction range. The QFN-16 package achieves θJA = 43°C/W on a 4-layer 6.35cm × 6.35cm evaluation board (EV4430-L-00A), enabling 3.5A continuous operation at +85°C ambient with standard copper pours and thermal vias to the internal ground plane.
What EMI certifications does MPQ4430GLE-38-AEC1-P meet?
When used with the recommended EMI filter (per Figure 17 in datasheet), it meets CISPR-25 Class 5 limits for conducted and radiated emissions (150kHz–1GHz) in both horizontal and vertical polarizations-validated on standard automotive EMC test benches. Layout adherence to MPS reference design is required to maintain compliance.
MPQ4430GLE-38-AEC1-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MPQ
- Package/Case:
- 16-VQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.3V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 3.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 3.5A
- Frequency - Switching:
- 350kHz ~ 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 16-QFN (3x4)
MPQ4430GLE-38-AEC1-P FAQ
1.How can I place an order for MPQ4430GLE-38-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4430GLE-38-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 MPQ4430GLE-38-AEC1-P reliable?
The price and inventory of MPQ4430GLE-38-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 MPQ4430GLE-38-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPQ4430GLE-38-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4430GLE-38-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4430GLE-38-AEC1-P?
MPQ4430GLE-38-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4430GLE-38-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 MPQ4430GLE-38-AEC1-P?
For technical support, including MPQ4430GLE-38-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4430GLE-38-AEC1-P requirements.
6.How does Aetrix verify that MPQ4430GLE-38-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPQ4430GLE-38-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 MPQ4430GLE-38-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPQ4430GLE-38-AEC1-P?
All MPQ4430GLE-38-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4430GLE-38-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 MPQ4430GLE-38-AEC1-P part is unused and in its original packaging.
Return procedure for MPQ4430GLE-38-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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