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Monolithic Power Systems Inc. MPQ4433GLE-5-AEC1-Z
- Part No.:
- MPQ4433GLE-5-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 16-PowerVQFN
- Datasheet:
-
MPQ4433GLE-5-AEC1-Z.pdf
- Description:
- IC REG BUCK 5V 3A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,735
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Product details
Overview
MPQ4433GLE-5-AEC1-Z from Monolithic Power Systems is a 36V, 3A synchronous step-down DC/DC converter with AEC-Q100 Grade 1 qualification, fixed 5V output, integrated 90mΩ high-side and 40mΩ low-side MOSFETs, programmable 350kHz–2.5MHz switching frequency, and 10μA quiescent current in sleep mode-designed for automotive infotainment power rails, ADAS camera modules, and body control units operating across cold-crank (3.3V VIN) to load-dump (36V VIN) conditions.
For engineers reviewing the MPQ4433GLE-5-AEC1-Z datasheet, MPQ4433GLE-5-AEC1-Z pinout, MPQ4433GLE-5-AEC1-Z application, or MPQ4433GLE-5-AEC1-Z equivalent, key selection criteria include AEC-Q100 Grade 1 compliance, wettable flank QFN-16 package for automated optical inspection, valley-current OCP with hiccup protection, low-dropout mode for automotive cold-crank, and external clock synchronization capability with selectable in-phase/180° out-of-phase operation.
Technical Context
The MPQ4433GLE-5-AEC1-Z implements current-mode control with valley-current over-current protection and thermal shutdown at 170°C. Its advanced asynchronous mode (AAM) dynamically scales switching frequency under light load to minimize gate-driving and switching losses, achieving >90% efficiency at 1mA output with 5V output and 12V input.
It integrates a bootstrap driver (BST), internal 5V VCC regulator, and bias supply (BIAS) support for external 5–18V auxiliary powering to reduce dissipation. The device supports forced CCM via SYNC pin assertion and includes 80ns minimum on-time for high-duty-cycle operation down to 3.3V input.
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 (up to 36V). |
| Output Current | 3A continuous - delivers stable 5V output under sustained load without thermal derating in QFN-16 package with θJA = 48°C/W. |
| Quiescent Current | 10μA in sleep mode - enables always-on subsystems (e.g., CAN wake-up receivers) to meet <100μA system standby budgets. |
| Switching Frequency | 350kHz to 2.5MHz - programmable via FREQ pin resistor or synchronized externally; supports EMI optimization and compact magnetics. |
| Feedback Reference | 0.8V nominal - fixed-output variant ties FB directly to VOUT; enables precise regulation tolerance of ±1.5% over temperature and line. |
| Protection Features | OCP (valley-current detection), hiccup-mode short-circuit response, thermal shutdown (170°C), UVLO (2.8V rising), and reverse-current limiting (3A). |
| Package | QFN-16 (3mm × 4mm) with wettable flanks - supports AOI-compatible solder joint inspection and meets IPC-J-STD-020 moisture sensitivity level 3. |
Pinout & Package
MPQ4433GLE-5-AEC1-Z is housed in a thermally enhanced, wettable-flank QFN-16 (3mm × 4mm) package with exposed thermal pad. Pin 1 is marked by dot; top marking includes "MP", year/week code, "4433", lot number, "E" (wettable flank), and "5" (5V fixed output).
| 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; tie to GND if unused. |
| 2 VIN | Main input supply | Accepts 3.3–36V; requires local ceramic decoupling to suppress switching noise and ensure stable startup. |
| 3,10 SW | Power switch node | Internally connected pins driving external inductor; carries high di/dt; must be routed with minimal loop area. |
| 4,9 PGND | Power ground return | High-current return path for MOSFETs; requires dedicated copper pour and multiple vias to thermal pad. |
| 5 EN | Enable control | Active-high logic input (1.05V threshold); supports controlled sequencing and system-level power management. |
| 6 SYNC | Frequency synchronization & mode control | Accepts 350kHz–2.5MHz clock; also selects AAM (floating/low) or forced CCM (high) before startup. |
| 7 PG | Power-good indicator | Open-drain output asserting high when VOUT is within ±10% of 5V; requires external pull-up for monitoring. |
| 8 BIAS | Auxiliary bias supply | Optional 5–18V external supply to reduce internal dissipation and improve efficiency at high VIN. |
| 11 BST | Bootstrap supply | Connects 0.1μF ceramic capacitor between BST and SW to drive high-side MOSFET gate reliably. |
| 12 VCC | Internal bias rail | Regulated 5V output; requires ≥1μF ceramic decoupling close to pin for stable gate drive and control logic. |
| 13 AGND | Analog reference ground | Separate low-noise ground for feedback and error amplifier; must be star-connected to PGND at single point. |
| 14 SS | Soft-start timing | 10μA current source charges external capacitor; floating defaults to 0.7ms internal soft-start time. |
| 15 FB | Feedback input | Tied directly to VOUT in fixed-5V version; no external divider required-simplifies layout and improves stability. |
| 16 FREQ | Frequency programming | Resistor-to-GND sets switching frequency: 180kΩ → ~475kHz, 82kΩ → ~1MHz, 27kΩ → ~2.5MHz. |
Key Features
| Feature | Design Value |
|---|---|
| Wettable flank QFN-16 | Enables automated optical inspection (AOI) of solder joints-critical for automotive zero-defect manufacturing requirements. |
| AEC-Q100 Grade 1 qualification | Validated for operation from −40°C to +125°C junction temperature-meets stringent automotive reliability and stress-test standards. |
| Low dropout mode | Maintains regulation with VIN as low as 3.3V at 5V output-supports engine cranking where battery dips below 6V. |
| Advanced Asynchronous Mode (AAM) | Reduces light-load quiescent current to 10μA and maintains >85% efficiency at 1mA output-extends battery life in always-on systems. |
| Valley-current OCP with hiccup | Detects inductor current at valley point to prevent runaway; enters low-duty-cycle hiccup mode during sustained short circuit-limits average fault current to <100mA. |
| EMI-optimized design | Meets CISPR 25 Class 5 conducted/radiated emissions limits with standard EMI filter-reduces need for external ferrites or shielding. |
Applications
| Automotive Infotainment Power | ADAS Camera Module Supply |
|---|---|
|
Use Scenario: Powers SoC, display interface, and audio codec in head-unit systems with wide-input automotive battery rail. IC Role / Device Role / Timing Role: Primary 5V buck regulator delivering 3A with fast transient response to handle burst-mode GPU loads. Use Value: AEC-Q100 qualification and 10μA sleep current enable seamless start-stop operation while meeting OEM EMC requirements per CISPR 25 Class 5. |
Use Scenario: Supplies image sensor and ISP in rear-view or surround-view cameras exposed to extreme ambient temperatures. IC Role / Device Role / Timing Role: Fixed 5V point-of-load regulator with low dropout mode ensuring uninterrupted operation during cold-crank events (VIN = 3.3V). Use Value: Wettable flank QFN enables reliable reflow in high-reliability camera PCB assemblies; thermal shutdown (170°C) prevents field failures in sealed enclosures. |
| Body Control Unit (BCU) | Telematics Control Unit (TCU) |
|
Use Scenario: Provides regulated 5V for microcontroller, CAN transceivers, and sensor interfaces in door modules and lighting controllers. IC Role / Device Role / Timing Role: Always-on power stage supporting low-power sleep modes and rapid wake-up via EN pin control. Use Value: 1μA shutdown current and valley-current OCP allow safe integration into distributed BCU architectures with long-term battery disconnect tolerance. |
Use Scenario: Powers LTE modem, GNSS receiver, and secure element in cellular-connected vehicle telematics systems. IC Role / Device Role / Timing Role: High-efficiency 5V supply synchronized to system clock via SYNC pin to reduce beat-frequency EMI in RF-sensitive layouts. Use Value: External clock sync with selectable phase minimizes conducted noise coupling into GNSS antenna traces-improving position accuracy and signal acquisition. |
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 |
|---|---|---|---|
| MPQ4433GL-5-AEC1-Z | No wettable flanks; standard QFN-16 package; identical electrical specs and AEC-Q100 Grade 1 rating. | Lacks AOI capability; suitable for non-automotive industrial use or cost-sensitive designs where optical inspection is not mandated. | Select when AOI is unnecessary and lower procurement cost is prioritized over automotive process traceability. |
| TPS543320RHLT | TI part with 4.5–18V input, 3A output, 5V fixed option; no AEC-Q100 qualification; uses different pinout and control architecture (D-CAP3). | Not qualified for automotive; lacks cold-crank support below 4.5V; higher IQ (25μA) and no wettable flanks. | Consider only for non-automotive industrial applications requiring TI ecosystem compatibility and D-CAP3 fast transient response. |
Compared with MPQ4433GLE-5-AEC1-Z, the MPQ4433GL-5-AEC1-Z offers identical performance but omits wettable flanks for cost savings, while the TPS543320RHLT provides alternative control-loop behavior and vendor support but fails to meet automotive qualification, cold-crank, or AOI requirements.
Availability
MPQ4433GLE-5-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and body control units requiring stable component supply with full AEC-Q100 traceability, wettable flank inspection readiness, and production lifecycle assurance.
Supply support for MPQ4433GLE-5-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 core expertise in DC/DC conversion, motor drivers, and LED lighting solutions.
The MPQ4433 series belongs to MPS's automotive-grade power management portfolio, engineered specifically for harsh-environment vehicle subsystems demanding AEC-Q100 reliability, ultra-low IQ, and robust EMI performance.
FAQ
What is the purpose of the BIAS pin on MPQ4433GLE-5-AEC1-Z?
The BIAS pin accepts an external 5–18V supply to power the internal gate drivers and control circuitry, reducing power dissipation in the IC and improving overall efficiency-especially beneficial at high input voltages (e.g., 24V or 36V). When unused, BIAS should be left floating or tied to ground.
How does the MPQ4433GLE-5-AEC1-Z achieve AEC-Q100 Grade 1 qualification?
It undergoes rigorous stress testing per AEC-Q100 Rev H, including temperature cycling (−40°C to +125°C), HTOL (1000 hours at 125°C), and ESD (HBM ±2kV), with full wafer-level and packaged-device qualification data available in MPS's certified automotive test reports.
Can the MPQ4433GLE-5-AEC1-Z operate with input voltage below 5V?
Yes-it supports input down to 3.3V and maintains regulation in low-dropout mode, enabling operation during automotive cold-crank events where battery voltage drops to ~3.5V while delivering 5V output at up to 3A.
What is the function of the PHASE pin, and how should it be used?
The PHASE pin selects synchronization phase relative to the external SYNC clock: driven high for in-phase operation, low for 180° out-of-phase. If synchronization is unused, PHASE must be tied to GND to prevent noise coupling and ensure stable internal oscillator operation.
Does the MPQ4433GLE-5-AEC1-Z require an external soft-start capacitor?
No-floating the SS pin activates the internal 0.7ms soft-start timer. An external capacitor may be added to extend soft-start time linearly (e.g., 100nF yields ~7ms), but it is optional and not required for basic operation.
How is power-good (PG) asserted, and what is its voltage threshold?
PG is an open-drain output that pulls high when VOUT reaches 90–95% of nominal 5V (i.e., 4.5–4.75V) during startup and remains high until VOUT falls below 79–84% (3.95–4.2V); it requires an external pull-up resistor (typically 10–100kΩ) to a valid logic rail.
What distinguishes the "E" suffix in MPQ4433GLE-5-AEC1-Z?
The "E" denotes wettable flank construction-where package side walls are plated to enable automated optical inspection of solder fillets. This is mandatory for many Tier 1 automotive assembly lines and distinguishes it from the non-wettable MPQ4433GL-5-AEC1-Z variant.
MPQ4433GLE-5-AEC1-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MPQ
- Package/Case:
- 16-PowerVQFN
- 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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 3A
- Frequency - Switching:
- 350kHz ~ 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x4)
MPQ4433GLE-5-AEC1-Z FAQ
1.How can I place an order for MPQ4433GLE-5-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4433GLE-5-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 MPQ4433GLE-5-AEC1-Z reliable?
The price and inventory of MPQ4433GLE-5-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 MPQ4433GLE-5-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ4433GLE-5-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4433GLE-5-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4433GLE-5-AEC1-Z?
MPQ4433GLE-5-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4433GLE-5-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 MPQ4433GLE-5-AEC1-Z?
For technical support, including MPQ4433GLE-5-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4433GLE-5-AEC1-Z requirements.
6.How does Aetrix verify that MPQ4433GLE-5-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ4433GLE-5-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 MPQ4433GLE-5-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ4433GLE-5-AEC1-Z?
All MPQ4433GLE-5-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4433GLE-5-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 MPQ4433GLE-5-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ4433GLE-5-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPQ4433GLE-5-AEC1-Z Tags
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