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Monolithic Power Systems Inc. MPQ4436AGRE-AEC1-P
- Part No.:
- MPQ4436AGRE-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 20-PowerVFQFN
- Datasheet:
-
MPQ4436AGRE-AEC1-P.pdf
- Description:
- IC REG BUCK ADJ 6A 20QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,028
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Product details
Overview
MPQ4436AGRE-AEC1-P 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 current-designed for automotive infotainment power rails requiring cold-crank operation and low EMI.
For engineers reviewing the MPQ4436AGRE-AEC1-P datasheet, MPQ4436AGRE-AEC1-P pinout, MPQ4436AGRE-AEC1-P application, or MPQ4436AGRE-AEC1-P equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade thermal and EMI performance, and real-world multi-phase and FSS-enabled design considerations.
Technical Context
This regulator employs current-mode control with fast transient response and supports both Advanced Asynchronous Mode (AAM) for light-load efficiency and Forced Continuous Conduction Mode (FCCM) for output ripple stability. Its 100ns minimum on-time enables high-duty-cycle operation down to 2.5V output under 45V input-critical for automotive cold-crank conditions.
The device integrates frequency foldback at startup to prevent inductor current runaway, offers out-of-phase synchronized clock output (SYNCO) for multi-phase interleaving, and includes a dedicated current-sharing pin (ICS) for precise phase-current balancing across parallel converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.3V to 45V - supports full automotive battery range including cold-crank (4.5V) and load-dump (40V+). |
| Output Current | 6A continuous - delivered via integrated MOSFETs without external drivers or heat sinks in typical 4-layer PCB layouts. |
| Shutdown Current | 1.7μA - enables >1-year battery standby in always-on automotive modules (e.g., telematics wake-up circuits). |
| Feedback Reference | 0.815V ±1.5% - sets output voltage with standard resistor dividers; tight tolerance reduces calibration overhead in production. |
| Switching Frequency | 350–1000kHz programmable via FREQ pin - allows EMI optimization and inductor size trade-offs without changing IC. |
| Power Good Window | 93%–106% of VOUT - provides robust rail monitoring with 30μs delay, compatible with MCU reset timing requirements. |
| Thermal Shutdown | 170°C with 20°C hysteresis - ensures safe recovery after overload without latching, supporting intermittent peak loads. |
Pinout & Package
MPQ4436AGRE-AEC1-P is housed in a wettable-flank QFN-20 (4mm × 4mm) package with exposed thermal pad, rated MSL-1 and qualified per AEC-Q100 Grade-1 (−40°C to +125°C TJ).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 MODE | AAM/FCCM selection | Pull high for forced CCM (low ripple); pull low for AAM (ultra-low IQ at light load); floating prohibited. |
| 2 SYNCIN | External clock input | Accepts 350–1000kHz TTL signal; enables synchronization to master clock or multi-phase interleaving. |
| 3,12 VIN | Main power input | Supplies internal circuitry and high-side switch; requires local 10μF ceramic decoupling per pin. |
| 4,5,10,11 PGND | Power ground return | Low-impedance path for switch node current; must connect directly to thermal pad and input/output caps. |
| 6 BST | Bootstrap supply | Drives high-side gate; requires 0.1μF ceramic capacitor between BST and SW for reliable bootstrapping. |
| 7,8 SW | Switch node | Connects to inductor; high di/dt node-requires short, wide trace and minimized loop area with PGND. |
| 9 EN | Enable control | Active-high logic; 0.85V threshold ensures compatibility with 3.3V/5V microcontrollers and sequencers. |
| 13 SYNCO | Synchronized clock output | 180° out-of-phase with internal oscillator or SYNCIN; enables precise two-phase interleaving without external logic. |
| 14 PG | Open-drain power good | Indicates VOUT within ±7% window; requires external pull-up to monitored rail or system VCC. |
| 15 ICS | Current sharing | In multi-phase configs, parallel connection equalizes phase currents; tie to VCC in single-phase use. |
| 16 VCC | Bias supply | Internal LDO output; requires 1μF ceramic cap to AGND for stable gate drive and control logic. |
| 17 AGND | Analog ground | Reference for FB, SS, MODE, and internal error amplifier; must be separated from PGND and joined at single point. |
| 18 FB | Voltage feedback | 0.815V reference input; connects to resistor divider midpoint-keep trace short and free of vias. |
| 19 SS | Soft-start timing | 6μA current source charges external capacitor; controls ramp rate to limit inrush and avoid input droop. |
| 20 FREQ | Frequency programming | Resistor-to-GND sets fSW per fSW vs. RFREQ curve; enables EMI tuning without layout changes. |
Key Features
| Feature | Design Value |
|---|---|
| Frequency Spread Spectrum (FSS) | Integrated FSS reduces peak radiated emissions by >10dB in CISPR25 Class 5 tests-eliminates need for external EMI filters in many automotive designs. |
| Low Dropout Mode | Supports ≥90% duty cycle at VIN ≥ 5.5V, enabling stable 3.3V/5V outputs during 6V cold-crank events without dropout. |
| Hiccup Over-Current Protection | Auto-retry shutdown on sustained overcurrent prevents thermal runaway while preserving system recoverability after fault clearance. |
| Wettable Flank QFN | Side-wettable leads enable automated optical inspection (AOI) of solder joints-critical for zero-defect automotive manufacturing. |
| Multi-Phase Capability | SYNCO and ICS pins allow up to 4-phase interleaving with <±5% current imbalance-doubles effective output current to 24A with shared thermal load. |
Applications
| Automotive Infotainment Head Unit | Instrument Cluster Display |
|---|---|
|
Use Scenario: Powers SoC, DDR memory, and display interface in 12V vehicle architectures with frequent stop-start cycles. IC Role / Device Role / Timing Role: Primary 3.3V/5V buck regulator delivering 6A with AAM mode for <20μA quiescent draw during sleep. Use Value: Eliminates need for external LDO post-regulation due to ±1% load/line regulation and 30μs PG response. |
Use Scenario: Supplies TFT-LCD backlight driver and microcontroller in digital instrument clusters exposed to −40°C to +125°C ambient. IC Role / Device Role / Timing Role: High-reliability 5V rail generator with thermal shutdown and hiccup OCP for unattended operation. Use Value: Wettable flank QFN ensures AOI-verified solder joints; AEC-Q100 Grade-1 qualification guarantees lifetime reliability. |
| ADAS Camera Module | Industrial Vehicle Telematics |
|
Use Scenario: Powers image sensor and ISP in rear-view or surround-view cameras mounted near engine compartments. IC Role / Device Role / Timing Role: Input-filter tolerant buck converter handling 45V load-dump transients without latch-up or damage. Use Value: 45V absolute max rating and built-in frequency foldback prevent inductor saturation during cold-crank startup. |
Use Scenario: Provides isolated 3.3V logic supply for GPS/GNSS, cellular modem, and CAN transceivers in fleet management gateways. IC Role / Device Role / Timing Role: Synchronized multi-phase controller (via SYNCO/ICS) reducing input ripple and EMI in dense PCB layouts. Use Value: 350–1000kHz programmability allows matching switching frequency to sensitive RF bands (e.g., LTE Band 13). |
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-P | 4A output, same 45V input, identical pinout and features except lower current rating and 60mΩ/30mΩ RDS(on). | Targeted at lower-power ADAS sensors or body-control modules where 4A suffices and board space is constrained. | Select when thermal budget limits full 6A operation or cost sensitivity outweighs headroom needs. |
| TPS546B24RVFT | 6A, 16V max input, PMBus interface, higher BOM cost, no AEC-Q100 qualification, requires external compensation. | Used in non-automotive industrial servers or telecom where digital control and telemetry are required. | Choose only if PMBus configuration, margining, or telemetry justify added complexity and cost-no drop-in replacement. |
Compared with MPQ4433AGRE-AEC1-P, this part delivers 50% higher output current in identical footprint and thermal profile; versus TPS546B24RVFT, it offers automotive qualification, simpler analog control, and lower system-level BOM count at the expense of configurability.
Availability
MPQ4436AGRE-AEC1-P 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 product lifecycles.
Supply support for MPQ4436AGRE-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 power management ICs, with core expertise in DC/DC conversion, motor drivers, and LED lighting controllers.
This device belongs to MPS's automotive-grade MPQ series, engineered specifically for harsh-temperature, high-reliability vehicle subsystems-including infotainment, clusters, and ADAS-where AEC-Q100 compliance and EMI robustness are mandatory.
FAQ
What is the difference between MPQ4436 and MPQ4436A?
The MPQ4436A integrates Frequency Spread Spectrum (FSS) to reduce peak EMI emissions-validated to meet CISPR25 Class 5 radiated/ conducted limits-while the base MPQ4436 lacks FSS. Both share identical pinout, electrical specs, and AEC-Q100 qualification; the 'A' suffix denotes the FSS variant.
Can MPQ4436AGRE-AEC1-P operate with 48V input?
No. The absolute maximum VIN rating is +50V, but recommended operating range is 3.3V to 45V. Sustained 48V operation exceeds specification and risks permanent damage; for 48V systems, consider MPS's MPQ4423A (60V-rated) or similar higher-voltage alternatives.
How is thermal performance affected by the wettable flank package?
The wettable flank QFN improves solder joint reliability and thermal transfer to the PCB copper pour, reducing θJA by ~8°C/W versus standard QFN on identical 4-layer boards. Measured case rise is ≤45°C at 6A/12V input, enabling convection-only cooling in most automotive enclosures.
Does the device support external synchronization above 1MHz?
No. SYNCIN accepts only 350kHz to 1000kHz external clocks per datasheet specifications. Attempting >1MHz may cause erratic switching or failure to lock; for higher-frequency systems, use internal oscillator or select a different controller with extended sync range.
What is the minimum output voltage achievable with this IC?
With the 0.815V feedback reference and practical resistor divider limitations, the minimum regulated output is 0.815V. However, stable operation below 1.2V requires careful layout, low-ESR output capacitors, and validation of light-load regulation in AAM mode.
Is the ICS pin required in single-phase designs?
Yes. In single-phase use, ICS must be tied to VCC (or VOUT ≥3V), not left floating. Leaving it unconnected causes undefined current-limit behavior and potential startup failure; the datasheet explicitly prohibits floating this pin under any configuration.
How does the power good (PG) signal behave during undervoltage lockout?
During VIN UVLO (below 2.65V), PG remains low and does not assert high until VIN exceeds the rising threshold and VOUT stabilizes within 93–106% of target. PG deasserts within 30μs if VOUT falls outside that window-enabling fast system reset sequencing.
MPQ4436AGRE-AEC1-P 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-P FAQ
1.How can I place an order for MPQ4436AGRE-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4436AGRE-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 MPQ4436AGRE-AEC1-P reliable?
The price and inventory of MPQ4436AGRE-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 MPQ4436AGRE-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPQ4436AGRE-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4436AGRE-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4436AGRE-AEC1-P?
MPQ4436AGRE-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4436AGRE-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 MPQ4436AGRE-AEC1-P?
For technical support, including MPQ4436AGRE-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4436AGRE-AEC1-P requirements.
6.How does Aetrix verify that MPQ4436AGRE-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPQ4436AGRE-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 MPQ4436AGRE-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPQ4436AGRE-AEC1-P?
All MPQ4436AGRE-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4436AGRE-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 MPQ4436AGRE-AEC1-P part is unused and in its original packaging.
Return procedure for MPQ4436AGRE-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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