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Monolithic Power Systems Inc. MP8847GD-Z
- Part No.:
- MP8847GD-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 14-VFQFN
- Datasheet:
-
MP8847GD-Z.pdf
- Description:
- IC REG BUCK ADJ 6A 14QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,521
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Product details
Overview
MP8847GD-Z from Monolithic Power Systems is a 6A, 2.7V–6V synchronous step-down switcher with I²C interface, integrated 35mΩ high-side and 15mΩ low-side MOSFETs, and programmable output (0.6V–1.235V in 5mV steps) for processor core supplies requiring dynamic voltage scaling.
For engineers reviewing the MP8847GD-Z datasheet, MP8847GD-Z pinout, MP8847GD-Z application, or MP8847GD-Z equivalent, this device supports real-time voltage adjustment via 3.4Mbps I²C, selectable switching frequency (0.85–2.2MHz), power-good monitoring, and thermal/overcurrent protection in a compact 2mm×3mm QFN-14 package.
Technical Context
The MP8847 employs constant-frequency hysteretic control-enabling fast transient response without external loop compensation-while maintaining fixed switching frequency across load conditions. Its internal DAC and register-mapped I²C interface allow full configuration of output voltage, slew rate, PGOOD behavior, and operating mode (PFM/CCM).
It integrates UVLO (2.55V rising), overvoltage protection (VIN >6.3V), thermal warning (130°C) and shutdown (150°C), plus internal 1ms soft-start and open-drain power-good output with ±10% regulation window detection. The EN pin and I²C-controlled enable bit provide dual activation paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range | 2.7V to 6V - supports single-cell Li-ion, USB PD, and intermediate bus rails without pre-regulation. |
| Output current | Up to 6A continuous - delivers sufficient headroom for modern SoC core domains under peak burst loads. |
| Output voltage range | 0.6V to 1.235V in 5mV steps - enables precise DVS for ARM Cortex-A/R cores and FPGA I/O banks. |
| Switching frequency | 0.85MHz to 2.2MHz (factory-selectable) - balances efficiency, inductor size, and EMI filtering requirements. |
| I²C interface speed | Up to 3.4Mbps - supports rapid voltage transitions during DVFS events with minimal latency. |
| Internal MOSFET RDS(on) | 35mΩ (HS) / 15mΩ (LS) - reduces conduction loss and eliminates need for external power switches. |
| Thermal shutdown | 150°C junction - latches off until cold restart, preventing sustained operation beyond safe silicon limits. |
| Power good accuracy | ±10% VOUT window with 50μs deglitch - ensures reliable system power sequencing and fault reporting. |
Pinout & Package
MP8847GD-Z is housed in a thermally enhanced, lead-free, halogen-free QFN-14 package measuring 2mm × 3mm with exposed thermal pad (pin 11 AGND connected to EP). Pin numbering follows standard top-view orientation per MPS package drawing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PG | Open-drain power-good indicator | Asserts high when VOUT is within ±10% of target; requires external pull-up to VIN for logic-level signaling. |
| 2 SDA | I²C bidirectional data line | Supports standard/fast/high-speed modes up to 3.4Mbps; internally pulled down, compatible with 1.5–3.3V bus voltages. |
| 3,10 GND | Power ground return | Dual GND pins reduce ground impedance and improve noise immunity in high-current switching paths. |
| 4,5,6 VIN | Main input supply connection | Three parallel VIN pins minimize IR drop and enhance current handling for 6A operation. |
| 7,8,9 SW | Switch node connection | Three SW pins connect directly to external inductor; low-inductance routing critical for EMI and efficiency. |
| 11 AGND | Analog ground reference | Separate analog ground pin isolates feedback and register circuitry from noisy power return paths. |
| 12 VOUT | Output voltage sense point | Direct connection to output capacitor for accurate regulation; not intended for remote sensing. |
| 13 SCL | I²C clock input | Accepts standard I²C clock signals; internal Schmitt trigger ensures noise immunity on clock edges. |
| 14 EN | Enable control input | Active-high logic; internal 1MΩ pulldown allows floating-disable; threshold ~1.55V typical. |
Key Features
| Feature | Design Value |
|---|---|
| I²C-programmable output voltage | 0.6V–1.235V in 5mV increments - eliminates external resistor dividers and enables firmware-controlled DVS. |
| Configurable slew rate | 8mV/μs or 32mV/μs - prevents excessive dI/dt during voltage transitions and avoids system-level timing violations. |
| Selectable PGOOD behavior | Detects both over- and under-voltage excursions (default) or under-voltage only - configurable per system reset architecture. |
| Factory-adjustable switching frequency | Six discrete options (0.85/1.11/1.25/1.67/2.0/2.2MHz) - optimizes trade-off between efficiency, size, and EMI in final layout. |
| Integrated soft-start | 1ms internal ramp - eliminates inrush current and stabilizes output before system initialization begins. |
| Thermal warning flag | OTW bit asserted at 130°C - enables proactive throttling or fan control before reaching 150°C shutdown threshold. |
Applications
| Mobile Application Processor Core Supply | FPGA Core Voltage Regulation |
|---|---|
Use Scenario: Dynamic voltage and frequency scaling (DVFS) for ARM-based application processors in smartphones and tablets. IC Role / Device Role / Timing Role: Primary core rail regulator with real-time I²C voltage updates synchronized to CPU performance state changes. Use Value: Enables sub-100μs voltage transitions matching CPU P-state entry/exit timing, reducing idle power by up to 35%. |
Use Scenario: Stable, low-noise 0.85V–1.0V supply for Xilinx Zynq or Intel Cyclone FPGA fabric and I/O banks. IC Role / Device Role / Timing Role: Digitally programmable point-of-load converter supporting multiple VCCINT/VCCIO configurations via host MCU. Use Value: Eliminates manual BOM changes across FPGA variants; single MP8847GD-Z design covers 7+ voltage combinations. |
| Industrial Edge AI Accelerator Module | Automotive Infotainment SoC Power |
Use Scenario: Compact 6A rail for NVIDIA Jetson Orin Nano or Google Coral TPU modules in space-constrained edge devices. IC Role / Device Role / Timing Role: High-efficiency buck converter with thermal warning output feeding watchdog timer for autonomous thermal management. Use Value: Maintains >92% efficiency at 3A load while enabling firmware-triggered derating before thermal throttling occurs. |
Use Scenario: ASIL-B compliant core supply for Renesas R-Car H3 or NXP i.MX8 SoCs in automotive infotainment head units. IC Role / Device Role / Timing Role: Safety-monitored DC/DC with PGOOD assertion, OVP disable option, and -40°C to +125°C operation. Use Value: Meets AEC-Q100 Grade 2 requirements with built-in UVLO, OTP, and VIN OVP configurability for functional safety compliance. |
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 |
|---|---|---|---|
| RTQ2132BGQW | 4A max output, 2.5V–5.5V input, no I²C interface - uses external resistors for fixed VOUT. | Lacks dynamic voltage scaling; suitable only for static-rail applications like memory I/O or peripheral supplies. | Select when I²C control is unnecessary and cost sensitivity outweighs programmability needs. |
| TPS62864DLCR | 6A output, 2.7V–6V input, I²C interface (1MHz max), 12-bit DAC resolution (finer than MP8847's 7-bit), but no thermal warning flag. | Higher-resolution voltage control but lacks OTW flag and has lower I²C speed - less suited for aggressive DVFS timing. | Select when ultra-fine voltage granularity (≈1.2mV) is required and thermal telemetry is handled externally. |
Compared with RTQ2132BGQW and TPS62864DLCR, MP8847GD-Z uniquely combines 6A capability, 3.4Mbps I²C, thermal warning flag, and factory-configurable frequency in a 2×3mm footprint-making it optimal for space-constrained, firmware-driven power systems demanding both precision and responsiveness.
Availability
MP8847GD-Z is available at Aetrix Electronics and suitable for mobile processor core supplies, FPGA power rails, industrial edge AI modules, and automotive infotainment SoC designs requiring stable component supply across multi-year production cycles.
Supply support for MP8847GD-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 over two decades of expertise in DC/DC conversion, motor drivers, and LED lighting controllers.
The MP8847 belongs to MPS's MP88xx family of digitally programmable, high-current buck converters designed specifically for dynamic voltage scaling in advanced SoC and FPGA platforms where firmware-controlled power management is essential.
FAQ
What is the default I²C slave address for MP8847GD-Z?
The MP8847GD-Z uses a fixed 7-bit I²C slave address of 0x60 (0xC0 write / 0xC1 read), with no hardware address pins-ensuring deterministic communication without address conflicts in multi-device systems.
Can MP8847GD-Z operate without an external inductor?
No. MP8847GD-Z is a synchronous buck controller with integrated power MOSFETs but requires an external inductor (typically 0.47µH) and output capacitors to complete the energy transfer path; omission will prevent regulation and cause immediate failure.
How does the Go bit (Reg03 D5) affect voltage transitions?
Writing Go=1 initiates a controlled voltage transition using the new VSEL register value; the slew rate (8 or 32mV/μs) determines ramp time-e.g., 0.95V→1.05V at 32mV/μs takes ≈3.1μs-enabling predictable timing for DVFS sequences.
Is the thermal warning (OTW) flag latched or sticky?
The OTW flag in Register 00 is level-sensitive and non-latching: it asserts high when junction temperature exceeds 130°C and clears automatically once temperature falls below 125°C (5°C hysteresis), allowing continuous thermal monitoring without software intervention.
Does MP8847GD-Z support forced continuous conduction mode (CCM)?
Yes. Setting the Mode bit (Reg02 D0) to 1 disables auto-PFM and forces CCM operation across all loads-reducing output ripple and improving regulation at light loads, though with slightly lower efficiency compared to PFM mode.
What is the maximum allowable VIN overshoot duration?
VIN may reach 8V for ≤10ns or 10V for ≤3ns per Absolute Maximum Ratings; sustained exposure above 6.5V-even briefly-risks permanent damage to the high-side MOSFET gate oxide and internal logic circuits.
How is the power-good (PG) signal configured for asymmetric fault detection?
Setting PG_LOHI = 0 (Reg02 D2) configures PG to assert low only on VOUT under-voltage (below 90% target); overvoltage events do not affect PG state-useful in systems where OV is handled separately by supervisor ICs.
MP8847GD-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 14-VFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable (Programmable)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 1.23V
- Current - Output:
- 6A
- Frequency - Switching:
- 1.25MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-QFN (2x3)
MP8847GD-Z FAQ
1.How can I place an order for MP8847GD-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP8847GD-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 MP8847GD-Z reliable?
The price and inventory of MP8847GD-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP8847GD-Z is usually 5 days.
3.What payment methods are accepted for MP8847GD-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP8847GD-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP8847GD-Z?
MP8847GD-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP8847GD-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 MP8847GD-Z?
For technical support, including MP8847GD-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP8847GD-Z requirements.
6.How does Aetrix verify that MP8847GD-Z is sourced from the original manufacturer or authorized distributors?
All MP8847GD-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 MP8847GD-Z meets industry standards.
7.What is the process for return or replacement of MP8847GD-Z?
All MP8847GD-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP8847GD-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 MP8847GD-Z part is unused and in its original packaging.
Return procedure for MP8847GD-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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