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Monolithic Power Systems Inc. MPQ4436AGRE-AEC1-Z
- Part No.:
- MPQ4436AGRE-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 20-PowerVFQFN
- Datasheet:
-
MPQ4436AGRE-AEC1-Z.pdf
- Description:
- IC REG BUCK ADJ 6A 20QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,972
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Product details
Overview
MPQ4436AGRE-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade-1 qualified, 45V input, 6A synchronous step-down DC/DC converter with integrated 48mΩ high-side and 20mΩ low-side MOSFETs, programmable 350–1000kHz switching frequency, and 1.7μA shutdown quiescent current-designed for automotive infotainment power rails requiring cold-crank operation down to 3.3V input.
For engineers reviewing the MPQ4436AGRE-AEC1-Z datasheet, MPQ4436AGRE-AEC1-Z pinout, MPQ4436AGRE-AEC1-Z application, or MPQ4436AGRE-AEC1-Z equivalent, this device supports multi-phase synchronization, frequency spread spectrum (FSS) for CISPR25 Class 5 EMI compliance, selectable AAM/FCCM modes, and low-dropout operation under automotive battery transients.
Technical Context
The MPQ4436AGRE-AEC1-Z employs current-mode control with internal compensation, enabling fast transient response in automotive systems. Its 100ns minimum on-time and 80ns minimum off-time support high duty-cycle operation during cold-crank (e.g., 3.3VIN→3.3VOUT) and wide output voltage scaling via external resistor divider.
It integrates frequency foldback at startup to prevent inductor current runaway, hiccup-mode over-current protection, thermal shutdown at 170°C with 20°C hysteresis, and a dedicated ICS pin for precise current sharing in multi-phase configurations-enabling scalable 12A+ solutions without external controllers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.3V to 45V - supports full automotive battery range including cold-crank (3.3V) and load-dump (45V) conditions. |
| Output Current | 6A continuous - delivered with integrated MOSFETs; no external power stage required for typical ADAS/cluster loads. |
| Quiescent Current | 1.7μA in shutdown mode - enables always-on subsystems with minimal battery drain over extended parking periods. |
| Switching Frequency | 350kHz to 1000kHz, programmable via FREQ pin resistor - allows EMI optimization and inductor size trade-offs across vehicle platforms. |
| Feedback Reference | 0.815V ±1.5% - sets output voltage accuracy; enables 3.3V, 5V, or custom rails using standard resistor tolerances. |
| Power Good Threshold | 93% to 106% of VOUT - provides reliable system reset signaling with 30μs delay, compatible with MCU POR requirements. |
| Thermal Shutdown | 170°C with 20°C hysteresis - ensures fault-tolerant operation in sealed enclosures without derating penalties. |
Pinout & Package
MPQ4436AGRE-AEC1-Z is housed in a wettable-flank QFN-20 (4mm × 4mm) package with exposed thermal pad for enhanced PCB heat dissipation in automotive under-hood environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 MODE | AAM/FCCM selection | Pull high for forced continuous conduction (FCCM); pull low for advanced asynchronous mode (AAM) to minimize light-load IQ. |
| 2 SYNCIN | External clock input | Accepts 350–1000kHz sync signal; enables phase interleaving and EMI reduction in multi-rail systems. |
| 3,12 VIN | Main input supply | Supplies gate drivers and control logic; requires local 10μF ceramic decoupling per pin for noise immunity. |
| 4,5,10,11 PGND | Power ground return | Low-impedance path for high di/dt switch currents; must be connected directly to thermal pad and input/output caps. |
| 6 BST | Bootstrap supply | Connects to SW node via 0.1μF ceramic capacitor; enables high-side MOSFET drive above VIN rail. |
| 7,8 SW | Switch node | Drives external inductor; high dv/dt node requiring tight layout and minimized loop area to reduce EMI. |
| 9 EN | Enable control | Active-high enable with 0.85V threshold; supports microcontroller-controlled power sequencing and wake-up logic. |
| 13 SYNCO | Synchronized clock output | 180° out-of-phase with internal oscillator or SYNCIN; enables precise multi-phase timing without external PLL. |
| 14 PG | Power good indicator | Open-drain output; requires external pull-up to monitored rail; asserts after soft-start and clears on over/under-voltage. |
| 15 ICS | Current share control | In multi-phase, connect all ICS pins together; in single-phase, tie to VCC or ≥3V rail to disable sharing function. |
| 16 VCC | Bias supply | Internal LDO output; powers control circuitry; requires 1μF ceramic cap to PGND for stability. |
| 17 AGND | Analog ground reference | Separate ground for FB, SS, and MODE; must be routed away from PGND traces to avoid noise coupling. |
| 18 FB | Feedback input | Monitors output via resistor divider; 0.815V reference enables accurate regulation independent of temperature drift. |
| 19 SS | Soft-start timing | 6μA current source charges external capacitor; controls ramp rate to limit inrush current and prevent input droop. |
| 20 FREQ | Frequency programming | Resistor-to-GND sets fSW; 62kΩ yields 470kHz - optimized for efficiency vs. EMI trade-off in automotive applications. |
Key Features
| Feature | Design Value |
|---|---|
| Frequency Spread Spectrum (FSS) | Reduces peak radiated emissions by spreading switching energy across 20kHz bandwidth-meets CISPR25 Class 5 limits without added filter components. |
| Low-Dropout Mode | Enables >95% duty cycle operation below 4VIN, sustaining regulated 3.3V/5V output during engine cranking when battery dips to 3.3V. |
| Advanced Asynchronous Mode (AAM) | Disables low-side MOSFET during light load, reducing switching losses and achieving 18μA sleep-mode IQ for always-on domains. |
| Multi-Phase Capability | ICS pin and SYNCO output allow up to 4-phase parallel operation with <±5% current imbalance-scalable for 12A–24A ADAS camera or radar supplies. |
| Hiccup Over-Current Protection | Enters timed restart after fault detection; prevents thermal runaway during sustained short-circuit while maintaining system visibility via PG flag. |
Applications
| Automotive Infotainment Head Unit | Instrument Cluster Display |
|---|---|
|
Use Scenario: Powers SoC, DDR memory, and touchscreen controller in head unit with 12V battery input subject to load dump and cold crank. IC Role / Device Role / Timing Role: Primary 3.3V/5V buck regulator delivering 6A peak current with FSS-enabled EMI control and soft-start sequencing. Use Value: Eliminates need for external EMI filters and discrete current-sharing circuits, reducing BOM count by 7 components versus discrete solutions. |
Use Scenario: Supplies LCD backlight driver and microcontroller in digital instrument cluster operating across -40°C to +125°C ambient. IC Role / Device Role / Timing Role: High-reliability 5V buck converter with AEC-Q100 Grade-1 qualification and thermal shutdown for sealed enclosure use. Use Value: Maintains regulation during 3.3V cold-crank events and achieves <15°C case rise at 6A, enabling fanless cluster design. |
| ADAS Front Camera Module | Industrial Vehicle Telematics |
|
Use Scenario: Provides clean 3.3V rail for image sensor and ISP in forward-facing ADAS camera exposed to engine bay temperatures. IC Role / Device Role / Timing Role: Synchronous buck with multi-phase capability to support dual-sensor fusion modules requiring matched timing. Use Value: SYNCO output enables sub-10ns phase alignment between two MPQ4436AGRE-AEC1-Z units, minimizing inter-sensor jitter. |
Use Scenario: Powers LTE modem, GNSS receiver, and CAN transceiver in heavy-duty telematics gateway with 24V nominal input. IC Role / Device Role / Timing Role: Robust 5V/6A supply with hiccup OCP and 45V absolute max rating for industrial 24V systems with high-energy transients. Use Value: Withstands ISO 7637-2 Pulse 5a (75V/100ms) without latch-up, verified per AEC-Q100 stress test conditions. |
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 |
|---|---|---|---|
| MPQ4433AGRE-AEC1-Z | 4A output current, same 45V input, identical pinout and feature set except lower current rating. | Suitable for lower-power clusters or telematics where 4A suffices; smaller inductor and output cap footprint. | Select when system peak load ≤4A to reduce thermal margin and cost; retains full AEC-Q100 Grade-1 and FSS compliance. |
| TPS546B24ARVFT | 6A, 18V max input, PMBus interface, higher IQ (12μA shutdown), no FSS or cold-crank mode. | Targets datacom/industrial 12V systems-not qualified for automotive; lacks 45V rating and AEC-Q100 certification. | Choose only for non-automotive 12V designs requiring digital monitoring; not drop-in replaceable due to voltage and qualification mismatch. |
Compared with MPQ4436AGRE-AEC1-Z, MPQ4433AGRE-AEC1-Z offers identical automotive robustness at reduced current capacity, while TPS546B24ARVFT provides digital control but fails critical automotive requirements including input voltage range, qualification, and cold-crank support.
Availability
MPQ4436AGRE-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment, instrument clusters, and ADAS camera modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MPQ4436AGRE-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, with core expertise in DC/DC conversion, motor drivers, and LED lighting controllers.
The MPQ4436/4436A product line targets automotive power systems requiring AEC-Q100 qualification, low quiescent current, and robust transient handling-specifically engineered for infotainment, cluster, and ADAS subsystems operating in harsh vehicle environments.
FAQ
What is the difference between MPQ4436 and MPQ4436A?
The MPQ4436A includes Frequency Spread Spectrum (FSS) functionality to reduce peak EMI emissions, meeting CISPR25 Class 5 requirements without additional filtering. The base MPQ4436 lacks FSS and is intended for less stringent EMI environments. Both share identical pinout, electrical specs, and AEC-Q100 qualification.
Can MPQ4436AGRE-AEC1-Z operate with 3.3V input during cold-crank?
Yes. It supports true 3.3V minimum input and enters low-dropout mode to sustain regulated output down to 3.3VIN. At 3.3VIN→3.3VOUT, it delivers up to 3A continuously with >75% efficiency, verified per AEC-Q100 cold-crank test profiles.
How is multi-phase current sharing implemented?
Current sharing is achieved by connecting the ICS pins of parallel MPQ4436AGRE-AEC1-Z units together and tying the master's SYNCO to slaves' SYNCIN. This forces synchronized switching with 180° phase offset and matches valley current limits within ±5%, eliminating need for external current-sense amplifiers.
What is the recommended layout for the BST capacitor?
A 0.1μF X7R ceramic capacitor must be placed directly between BST and SW pins with minimal trace length (<1mm). The capacitor must be rated for ≥16V and located adjacent to the IC to maintain bootstrap voltage integrity during high-duty-cycle operation.
Does the PG pin require an external pull-up resistor?
Yes. PG is open-drain and requires an external pull-up resistor to the monitored output rail (e.g., 10kΩ to 3.3V). Pull-up voltage must match the target VOUT level to ensure correct assertion thresholds; using a different rail causes inaccurate PG reporting.
Is the QFN-20 package wettable flank enabled?
Yes. The MPQ4436AGRE-AEC1-Z uses a wettable flank QFN-20 (4mm×4mm) package, enabling automated optical inspection (AOI) of solder joints on the side walls-critical for automotive manufacturing process control and zero-defect reliability goals.
What thermal performance can be expected on a 4-layer PCB?
On a JESD51-7 compliant 4-layer board (2oz copper, 1in² thermal pad), θJA is 44°C/W. At 6A load and 25°C ambient, junction temperature reaches ~125°C-within the 150°C max rating. For higher reliability, use EVQ4436-R-00A reference layout with θJA = 23°C/W.
MPQ4436AGRE-AEC1-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MPQ
- Package/Case:
- 20-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):
- 45V
- Voltage - Output (Min/Fixed):
- 0.815V
- Voltage - Output (Max):
- 45V
- Current - Output:
- 6A
- Frequency - Switching:
- 470kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 20-QFN (4x4)
MPQ4436AGRE-AEC1-Z FAQ
1.How can I place an order for MPQ4436AGRE-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4436AGRE-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 MPQ4436AGRE-AEC1-Z reliable?
The price and inventory of MPQ4436AGRE-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 MPQ4436AGRE-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ4436AGRE-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4436AGRE-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4436AGRE-AEC1-Z?
MPQ4436AGRE-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4436AGRE-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 MPQ4436AGRE-AEC1-Z?
For technical support, including MPQ4436AGRE-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4436AGRE-AEC1-Z requirements.
6.How does Aetrix verify that MPQ4436AGRE-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ4436AGRE-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 MPQ4436AGRE-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ4436AGRE-AEC1-Z?
All MPQ4436AGRE-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4436AGRE-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 MPQ4436AGRE-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ4436AGRE-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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