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Monolithic Power Systems Inc. MP8848GD-P
- Part No.:
- MP8848GD-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 15-PowerVFQFN
- Datasheet:
-
MP8848GD-P.pdf
- Description:
- IC REG BUCK ADJ 6A 15QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,838
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Product details
Overview
MP8848GD-P from Monolithic Power Systems is a 6A, synchronous step-down DC/DC converter with I²C interface, designed for low-voltage processor core supplies. It operates from 2.7V–6V input, delivers 0.6V–1.235V output in 5mV steps, integrates 32mΩ/15mΩ MOSFETs, and uses constant-frequency hysteretic control for fast transient response without loop compensation.
For engineers reviewing the MP8848GD-P datasheet, MP8848GD-P pinout, MP8848GD-P application, or MP8848GD-P equivalent, this device supports dynamic voltage scaling in space-constrained embedded systems requiring programmable output, thermal robustness up to +125°C junction, and I²C-controlled slew rate, frequency, and power-saving mode selection.
Technical Context
The MP8848GD-P implements a patented constant-frequency hysteretic control architecture that maintains fixed switching frequency (0.85–2.2MHz) while delivering ultra-fast load transient response-eliminating need for external compensation. Its dual-mode operation (auto-PFM at light load, forced CCM at full load) balances efficiency and output regulation across 0–6A range.
I²C interface operates at up to 3.4Mbps with slave address 0xC0/0xC1, enabling real-time register access to VOUT (7-bit DAC), soft-start timing, PG behavior, VIN OVP enable/disable, and output discharge control. Internal 0.6V reference (±15mV over temperature) feeds a precision 5mV-step voltage scaling engine.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 6V - supports single-cell Li-ion, USB PD, and multi-rail intermediate bus architectures. |
| Max Output Current | 6A continuous - sufficient for high-performance ARM Cortex-A cores and FPGA I/O banks. |
| Output Voltage Range | 0.6V to 1.235V in 5mV steps - enables fine-grained DVS for CPU/GPU DVFS schemes. |
| Switching Frequency | 0.85MHz to 2.2MHz (factory-programmable) - allows optimization of inductor size vs. EMI performance. |
| Internal MOSFET RDS(on) | 32mΩ high-side / 15mΩ low-side - reduces conduction loss and eliminates external FETs. |
| I²C Interface Speed | Up to 3.4Mbps - supports rapid voltage transitions during runtime performance state changes. |
| Thermal Protection | 130°C warning (OTW flag), 150°C shutdown - ensures safe operation under sustained overload or poor PCB thermal design. |
| Soft-Start Time | 1ms typical - prevents inrush current and stabilizes output before system initialization. |
Pinout & Package
MP8848GD-P is housed in a thermally enhanced QFN-15 package (2mm × 3mm, 0.5mm pitch) with exposed thermal pad (Pin 3) for efficient heat dissipation. Pin numbering follows top-view layout per MPS datasheet Rev. 1.0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (PG) | Power Good open-drain output | Signals ±10% VOUT regulation status; requires external pull-up to VIN for system sequencing. |
| 2 (SDA) | I²C bidirectional data line | Supports 3.4Mbps high-speed mode; compatible with 1.5V–3.3V bus voltages. |
| 3 (GND) | Power ground (thermal pad) | Primary thermal path; must be soldered to large PCB copper area for θJA = 35°C/W. |
| 4–6 (VIN) | Main input supply pins | Parallel connection reduces IR drop and improves high-current stability at 6A load. |
| 7–9 (SW) | Power switch node | Connects to external inductor; high di/dt node requiring tight layout and minimal trace length. |
| 10 (EN) | Enable control input | Logic-high (>1.8V) enables converter; internal 1MΩ pulldown allows floating-disable operation. |
| 11 (AGND) | Analog ground reference | Separate from power GND to minimize noise coupling into feedback and I²C circuitry. |
| 12 (VOUT) | Output voltage sense | Direct connection to output capacitor improves regulation accuracy; avoids PCB trace resistance error. |
| 13 (SCL) | I²C clock input | Accepts standard I²C timing; supports repeated start, ACK/NACK, and clock stretching. |
| 14 (AVIN) | Analog supply & P3 function pin | Provides clean bias for internal analog blocks; configurable as GPIO via I²C register SysCntlreg2 D1/D0. |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Voltage Scaling (DVS) | Real-time I²C programming of VOUT from 0.6V–1.235V in 5mV increments enables precise DVFS for SoCs. |
| Programmable Slew Rate | Two selectable output transition rates (8mV/μs or 32mV/μs) prevent overshoot/undershoot during voltage changes. |
| Configurable Power-Good Logic | PG_LOHI bit (Reg02 D2) selects dual-threshold (±10%) or undervoltage-only detection for flexible sequencing. |
| Output Discharge Control | Internal 500Ω pull-down activated via Reg03 D4 enables safe VOUT ramp-down when EN is deasserted. |
| Input OVP Disable Option | VIN_OVP bit (Reg02 D1) allows continued operation above 6.3V - useful in battery-float or wide-input test scenarios. |
| Thermal Warning Flag | OTW bit (Status Reg00 D1) asserts at 130°C - enables firmware throttling before shutdown at 150°C. |
Applications
| Mobile Application Processor Core Supply | FPGA I/O Bank Regulation |
|---|---|
|
Use Scenario: Powering ARM Cortex-A7x/A78 cores in smartphones/tablets with dynamic frequency scaling. IC Role / Device Role / Timing Role: Primary buck regulator delivering tightly regulated VDD_CPU with sub-100μs transient response to burst load changes. Use Value: I²C-controlled 5mV VOUT steps and programmable slew rate enable precise voltage/frequency coordination per P-state, reducing dynamic power by up to 22%. |
Use Scenario: Supplying configurable 1.0V–1.2V I/O banks on Xilinx Zynq UltraScale+ MPSoC. IC Role / Device Role / Timing Role: Dedicated point-of-load regulator with independent enable/control for each bank's voltage domain. Use Value: On-the-fly I²C reconfiguration allows runtime adaptation to different I/O standards (LVCMOS, SSTL, HSTL) without hardware change. |
| Industrial Edge AI Accelerator Module | Automotive Infotainment SoC Core Rail |
|
Use Scenario: Providing 0.85V @ 5A to NVIDIA Jetson Orin Nano GPU cores in fanless edge servers. IC Role / Device Role / Timing Role: High-efficiency, thermally robust step-down converter operating continuously at 85°C ambient. Use Value: 150°C thermal shutdown + OTW flag enables predictive thermal management in sealed enclosures with no airflow. |
Use Scenario: Delivering 0.95V core power to Renesas R-Car H3 in automotive head units with ASIL-B functional safety requirements. IC Role / Device Role / Timing Role: Safety-critical power rail with PG monitoring, UVLO, OVP, and current limit reporting via I²C status register. Use Value: Real-time fault visibility (ILIM, VoUV, VoOV, OTW bits in Reg00) supports diagnostic logging and fail-safe shutdown per ISO 26262. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP8847GD-Z | Successor part; identical QFN-15 package, same 6A rating, but adds spread-spectrum switching and improved light-load efficiency. | Recommended for new designs; supports stricter EMI requirements and lower quiescent current (120μA vs. 300μA). | Select MP8847GD-Z if designing new products - MP8848GD-P is Not Recommended for New Designs per MPS documentation. |
| TPS62864DLCR | Texas Instruments part; 6A, 2.7–6V input, I²C interface, but uses voltage-mode control with external compensation and fixed 2.2MHz frequency. | Lacks programmable slew rate and thermal warning flag; requires external resistors for VOUT setting unless using OTP variants. | Choose only if TI ecosystem alignment or specific qualification requirements mandate TI sourcing; lacks MP8848's hysteretic transient performance. |
Compared with MP8848GD-P, MP8847GD-Z offers direct pin-and-code compatibility with enhanced EMI and efficiency, while TPS62864DLCR trades hysteretic speed for TI's mature voltage-mode toolchain - making MP8847GD-Z the preferred upgrade path for legacy MP8848 designs.
Availability
MP8848GD-P is available at Aetrix Electronics and suitable for mobile processor core supplies, FPGA I/O regulation, industrial edge AI modules, and automotive infotainment SoC rails requiring stable component supply and long-term obsolescence planning.
Supply support for MP8848GD-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 analog and power ICs, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.
The MP8848 belongs to MPS's high-density, I²C-programmable DC/DC converter product line, engineered specifically for dynamic voltage scaling in advanced mobile and embedded processors where space, thermal headroom, and software-defined power management are critical.
FAQ
What is the recommended minimum input voltage for reliable operation?
The MP8848GD-P has a guaranteed UVLO rising threshold of 2.55V, with typical operation starting at 2.7V. For stable 6A output at 1.235V, MPS recommends maintaining VIN ≥ VOUT + 1.5V - i.e., minimum 2.735V input for highest VOUT setting. Below 2.7V, current capability degrades and regulation may not be maintained across temperature.
Can the MP8848GD-P operate without an external I²C master?
Yes - the MP8848GD-P functions as a standalone regulator using its default configuration: 0.94V output, 1.25MHz switching frequency, auto-PFM mode, and ±10% PG detection. I²C is optional for dynamic reconfiguration; basic enable/disable is handled solely by the EN pin.
How does the constant-frequency hysteretic control differ from traditional voltage-mode PWM?
Unlike voltage-mode PWM, which requires external compensation and suffers from slow transient response due to loop bandwidth limits, MP8848GD-P's hysteretic control compares output directly against a ramp-modulated reference - achieving sub-1μs load-step response without compensation components while maintaining fixed frequency via internal PLL synchronization.
What is the purpose of the AVIN pin beyond analog supply?
AVIN serves dual roles: (1) clean analog bias for internal DAC and comparators, and (2) a configurable GPIO (P3 function) controlled via Reg03 D1/D0 bits. When P3 Enable (D1)=1, writing P3 Set (D0) pulls AVIN high or low - enabling use as a status indicator or auxiliary control signal without adding discrete logic.
Is output discharge mandatory, and how is it enabled?
Output discharge is optional and disabled by default. To activate it, write '1' to the Out-dis bit (Reg03 D4); this engages an internal 500Ω pull-down between VOUT and GND when EN is low, ensuring rapid discharge to <100mV within ~10ms - critical for safe hot-swap or multi-rail sequencing.
Does the MP8848GD-P support spread-spectrum frequency modulation?
No - spread-spectrum modulation is not implemented in MP8848GD-P. This feature was added in the successor MP8847GD-Z. MP8848GD-P offers fixed-frequency operation only, with six discrete settings (0.85/1.11/1.25/1.67/2.0/2.2MHz) selected via Reg02 D7:D5 bits.
What failure modes are reported via the Status register (Reg00)?
Reg00 reports eight real-time conditions: ILIM (high-side current limit), UVLO (input undervoltage), OVP (input overvoltage), VoOV/VoUV (output over/under-voltage), PGOOD (±10% regulation), OTW (thermal warning ≥130°C), and EN stat (enable state). All bits are readable without affecting operation.
MP8848GD-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 15-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- 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:
- 15-QFN (3x2)
MP8848GD-P FAQ
1.How can I place an order for MP8848GD-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP8848GD-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 MP8848GD-P reliable?
The price and inventory of MP8848GD-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP8848GD-P is usually 5 days.
3.What payment methods are accepted for MP8848GD-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP8848GD-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP8848GD-P?
MP8848GD-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP8848GD-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 MP8848GD-P?
For technical support, including MP8848GD-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP8848GD-P requirements.
6.How does Aetrix verify that MP8848GD-P is sourced from the original manufacturer or authorized distributors?
All MP8848GD-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 MP8848GD-P meets industry standards.
7.What is the process for return or replacement of MP8848GD-P?
All MP8848GD-P units undergo pre-shipment inspection (PSI). If there is an issue with MP8848GD-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 MP8848GD-P part is unused and in its original packaging.
Return procedure for MP8848GD-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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