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Monolithic Power Systems Inc. MPQ8847AGQB-AEC1-Z
- Part No.:
- MPQ8847AGQB-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 14-VFQFN
- Datasheet:
-
MPQ8847AGQB-AEC1-Z.pdf
- Description:
- IC REG BUCK PROG 6A 14QFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MPQ8847AGQB-AEC1-Z from Monolithic Power Systems is a 6A, AEC-Q100 Grade 1 qualified synchronous step-down converter with I²C interface, operating from 2.7V to 6V input and delivering adjustable output from 0.6V to 1.235V in 5mV steps. It integrates 40mΩ high-side and 22mΩ low-side MOSFETs, supports up to 2.2MHz switching frequency, and features power-good indication and thermal shutdown - deployed in automotive infotainment and ADAS core supplies.
For engineers reviewing the MPQ8847AGQB-AEC1-Z datasheet, MPQ8847AGQB-AEC1-Z pinout, MPQ8847AGQB-AEC1-Z application, or MPQ8847AGQB-AEC1-Z equivalent, key selection criteria include I²C-configurable VOUT slew rate, AEC-Q100 Grade 1 temperature range (–40°C to +125°C), QFN-14 (2.5mm × 3mm) package thermal performance, and integrated soft-start timing (165μs).
Technical Context
The MPQ8847AGQB-AEC1-Z uses constant-frequency hysteretic control for fast transient response without external compensation, enabling high efficiency across light-to-heavy loads. Its I²C interface (up to 3.4Mbps) enables real-time configuration of output voltage, switching frequency (0.85–2.2MHz), and power-save mode selection.
Internal protection includes over-current detection (9–12.7A peak high-side limit), thermal shutdown at 170°C, and precise power-good monitoring with 83% UVLO falling threshold and 108% OV rising threshold - all validated under AEC-Q100 stress conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 6V - supports wide automotive battery rail variation including cold-crank (2.7V) and load-dump transients. |
| Output Current | 6A continuous - sufficient for multi-core SoC or FPGA core rails in ADAS domain controllers. |
| Output Voltage Range | 0.6V to 1.235V in 5mV steps - matches modern processor core voltage requirements with fine-grained I²C adjustment. |
| Switching Frequency | 0.85MHz to 2.2MHz - enables compact magnetics; higher frequencies reduce inductor size but increase switching loss. |
| Efficiency Peak | Up to 90% at 0.95V/5A (VIN=5V, fSW=1.25MHz, PFM) - optimized for low-VOUT, high-current automotive applications. |
| Thermal Shutdown | 170°C junction - provides robust fault recovery in sealed enclosures without derating at full load. |
| Soft-Start Time | 165μs - ensures controlled ramp-up of output voltage to prevent inrush current in sensitive downstream logic. |
Pinout & Package
MPQ8847AGQB-AEC1-Z is housed in a thermally enhanced QFN-14 package (2.5mm × 3mm, 0.5mm pitch) with exposed thermal pad for PCB-level heat dissipation. The package complies with MSL Level 1 and supports reflow soldering per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (PG) | Power-good open-drain output | Asserts low if VOUT deviates beyond ±17% (UV: 83%, OV: 108%) - used for system sequencing and fault reporting. |
| 2 (SDA) | I²C serial data line | Bi-directional, 3.4Mbps max - connects to host microcontroller I²C bus; floats if unused. |
| 3,10 (GND) | Power ground | Dedicated low-impedance return path for high-current switching loop; must connect directly to PCB ground plane. |
| 4,5,6 (VIN) | Main input supply | Accepts 2.7–6V; requires bulk + local ceramic bypass capacitors placed adjacent to pins for noise suppression. |
| 7,8,9 (SW) | Switch node | High-frequency AC output driving external inductor; layout critical to minimize EMI and voltage ringing. |
| 11 (AGND) | Analog ground | Reference for internal control circuitry; isolated from power GND to reduce noise coupling into feedback path. |
| 12 (VOUT) | Output voltage sense | Direct connection to regulated output; no external resistor divider allowed - enables accurate closed-loop regulation. |
| 13 (SCL) | I²C serial clock | Master-generated clock; supports standard/fast-mode plus high-speed mode (3.4Mbps) for rapid configuration. |
| 14 (EN) | Enable control | Active-high (≥1.8V); internal 1MΩ pulldown ensures safe default-off state when floating. |
Key Features
| Feature | Design Value |
|---|---|
| I²C-configurable VOUT | 0.6V–1.235V in 5mV steps enables dynamic voltage scaling for SoC power management without hardware changes. |
| Adjustable fSW | 0.85–2.2MHz range allows trade-off between inductor size, efficiency, and EMI profile per board layout constraints. |
| Integrated MOSFETs | 40mΩ/22mΩ RDS(on) pair minimizes conduction loss and eliminates external FET selection, reducing BOM count. |
| Power-good indicator | Open-drain PG pin with 50μs deglitch time provides reliable system power sequencing signal for downstream logic. |
| AEC-Q100 Grade 1 | Qualified for –40°C to +125°C operation - meets automotive engine bay and infotainment module ambient requirements. |
Applications
| Automotive Infotainment Head Unit | ADAS Camera Module Power |
|---|---|
Use Scenario: Supplies 0.95V core voltage to ARM-based multimedia SoC in head unit with dynamic load steps during video decode. IC Role / Device Role / Timing Role: Primary buck regulator with I²C-adjustable VOUT and fast transient response to maintain stable core rail during burst processing. Use Value: 90% peak efficiency at 5A reduces thermal load in confined dashboard enclosure; PG signal synchronizes SoC boot sequence. |
Use Scenario: Powers image signal processor (ISP) and MIPI serializer in rear-view camera module with strict EMI limits. IC Role / Device Role / Timing Role: High-frequency (2.2MHz) buck converter minimizing inductor footprint while maintaining <±1% output regulation. Use Value: 2.2MHz operation shifts switching noise above AM radio band; QFN-14 package enables compact 2-layer PCB design. |
| Telematics Control Unit (TCU) | Automotive Processor Core Supply |
Use Scenario: Delivers 1.2V to LTE modem and GNSS receiver in TCU with intermittent high-current bursts during data transmission. IC Role / Device Role / Timing Role: Synchronous buck with PFM/PWM mode auto-selection to maintain >85% efficiency across 1mA–6A load range. Use Value: Ultra-low 1μA shutdown current extends battery life during vehicle sleep mode; AEC-Q100 qualification ensures field reliability. |
Use Scenario: Provides tightly regulated 0.6V–1.0V core rail to automotive-grade microcontroller in body control module. IC Role / Device Role / Timing Role: Digitally programmable buck converter supporting firmware-controlled voltage scaling for performance vs. power trade-offs. Use Value: I²C interface allows runtime VOUT adjustment via CAN-FD gateway; 165μs soft-start prevents brown-out during MCU reset. |
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 |
|---|---|---|---|
| MPQ8847AGQB-Z | Non-AEC-Q100 version; identical electrical specs but not qualified for automotive temperature or reliability stress tests. | Suitable for industrial or consumer applications where –40°C to +125°C operation and AEC-Q100 compliance are not required. | Select only if automotive qualification is unnecessary - avoids cost premium of AEC1 variant without functional benefit. |
| TPS628641ARGTR | TI part with 6A rating, 2.7–6V input, but fixed 0.6V output (no I²C adjust); uses DCS-Control topology instead of hysteretic. | Lacks dynamic VOUT tuning and slew-rate control; requires external resistors for any output change - less flexible in field-programmable systems. | Choose when deterministic loop stability and minimal external components outweigh need for digital configurability. |
Compared with MPQ8847AGQB-AEC1-Z, the non-AEC MPQ8847AGQB-Z saves cost in non-automotive use cases, while TPS628641ARGTR trades I²C flexibility for TI's DCS-Control loop robustness - making MPQ8847AGQB-AEC1-Z optimal for AEC-compliant, software-defined voltage scaling.
Availability
MPQ8847AGQB-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and telematics control units requiring stable component supply with AEC-Q100 assurance and long-term production continuity.
Supply support for MPQ8847AGQB-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 design focus on integration, efficiency, and small-footprint solutions for automotive, industrial, and computing markets.
The MPQ8847A product line delivers highly integrated, I²C-programmable buck converters targeting automotive subsystems that demand AEC-Q100 qualification, dynamic voltage control, and thermal resilience in space-constrained environments.
FAQ
What is the maximum supported I²C clock frequency for MPQ8847AGQB-AEC1-Z?
The device supports I²C high-speed mode up to 3.4Mbps, verified across –40°C to +125°C with 100pF–400pF bus capacitance. This enables sub-millisecond VOUT updates and rapid configuration of switching frequency or power-save mode without interrupting system operation.
Does MPQ8847AGQB-AEC1-Z require external compensation components?
No. It uses constant-frequency hysteretic control architecture, eliminating the need for external loop compensation components like type-II or type-III networks. This simplifies layout, reduces BOM count, and guarantees stability across all operating conditions without tuning.
How is output voltage accuracy maintained over temperature?
VOUT accuracy is ensured by an internal 0.600V reference (±1.5% over –40°C to +125°C) and DAC resolution of 7 bits. Measured VOUT deviation remains within ±1.5% across temperature, validated by typical curves showing <±3mV drift from nominal at extremes.
Can the PG pin drive an LED directly for status indication?
No. PG is an open-drain output rated for 1mA sink current at 0.4V drop. Driving an LED requires a series current-limiting resistor and external pull-up to ≤6V; direct connection risks exceeding sink capability and degrading timing margins.
What is the minimum on-time limitation and its impact on low-VOUT operation?
Minimum on-time is 60ns, enabling stable 0.6V output at 2.7V input and 2.2MHz switching (duty cycle ≈ 22%). This ensures regulation down to lowest VOUT without pulse-skipping artifacts, critical for low-voltage SoC cores.
Is the thermal pad electrically connected to GND internally?
Yes. The exposed thermal pad is internally tied to GND and must be soldered to a dedicated PCB thermal pad connected to the main GND plane using ≥4 thermal vias (0.3mm diameter) for optimal θJA = 33°C/W performance on EVQ8847A-QB-00A reference board.
How does the device handle input undervoltage lockout (UVLO)?
UVLO has a rising threshold of 2.7V ±150mV hysteresis. When VIN drops below 2.55V, the device shuts down; it restarts only after VIN exceeds 2.7V. This prevents erratic operation during automotive cold-crank events while ensuring clean startup.
MPQ8847AGQB-AEC1-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MPQ
- Package/Case:
- 14-VFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 1.235V
- Current - Output:
- 6A
- Frequency - Switching:
- 850kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 14-QFN (2.5x3)
MPQ8847AGQB-AEC1-Z FAQ
1.How can I place an order for MPQ8847AGQB-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ8847AGQB-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 MPQ8847AGQB-AEC1-Z reliable?
The price and inventory of MPQ8847AGQB-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 MPQ8847AGQB-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ8847AGQB-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ8847AGQB-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ8847AGQB-AEC1-Z?
MPQ8847AGQB-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ8847AGQB-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 MPQ8847AGQB-AEC1-Z?
For technical support, including MPQ8847AGQB-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ8847AGQB-AEC1-Z requirements.
6.How does Aetrix verify that MPQ8847AGQB-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ8847AGQB-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 MPQ8847AGQB-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ8847AGQB-AEC1-Z?
All MPQ8847AGQB-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ8847AGQB-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 MPQ8847AGQB-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ8847AGQB-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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