My Inquiry
My Account
Monolithic Power Systems Inc. MPM3680GRE
- Part No.:
- MPM3680GRE
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 57-PowerBFQFN Module
- Datasheet:
-
MPM3680GRE.pdf
- Description:
- DC DC CONVERTER 0.65-5V
- Quantity:
- Payment:
- Shipping:
Inventory:2,371
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MPM3680GRE from Monolithic Power Systems is a fully integrated 6A synchronous step-down power module in QFN-57 (12×12×4 mm), combining DC/DC controller, MOSFETs, power inductor, input/output capacitors, and biasing components. It delivers 0.65–5V output from 4.5–18V input (or 2.5–18V with external 5V VCC bias), features adaptive Constant-On-Time control, 1% reference voltage accuracy over –40°C to +125°C, and integrated non-latch OCP/OVP/thermal shutdown. Used in telecom base stations and server VRMs where compact, high-current regulation is required.
For engineers reviewing the MPM3680GRE datasheet, MPM3680GRE pinout, MPM3680GRE application, or MPM3680GRE equivalent, key selection criteria include its 6A continuous output capability, programmable soft-start (default 3 ms), open-drain power-good signal with 2.5 ms delay, 400–600 kHz typical switching frequency at 1.2V output, and dual-input-voltage-range operation (internal vs. external VCC bias).
Technical Context
The MPM3680GRE implements adaptive Constant-On-Time (COT) control with input-voltage feedforward, enabling ultrafast transient response without external compensation. Its internal 430 kΩ frequency-set resistor yields ~500 kHz at 1.2V output, scalable to 200–1000 kHz via external resistor between FREQ> and VIN.
It integrates an internal 4.8V LDO for control circuitry-disableable by applying 5V to VCC to extend input range down to 2.5V-and uses dual current-limit protection: valley-current detection during LS-FET conduction and negative-current limiting to prevent reverse inductor current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 6A continuous; supports up to 8A peak per thermal limits-enables single-rail CPU/GPU core supply in space-constrained systems. |
| Input Voltage Range | 4.5–18V (internal VCC bias) or 2.5–18V (external 5V bias)-flexible integration into 3.3V, 5V, or 12V intermediate bus architectures. |
| Output Voltage Range | 0.65–5V adjustable via external resistor divider-covers DDR memory, FPGA I/O, ASIC cores, and SoC rails. |
| Reference Voltage Accuracy | ±0.5% load regulation, ±0.4% line regulation, 611 mV typ @ 25°C-ensures tight output tolerance under dynamic load and input variation. |
| Switching Frequency | 400–600 kHz typical (1.2V out); programmable 200–1000 kHz-balances efficiency (lower fSW) and component size (higher fSW). |
| Soft-Start Time | Default 3 ms (SS pin floating); extended via external capacitor-prevents inrush current into pre-biased loads and stabilizes sequencing. |
| Power-Good Signal | Open-drain PG with 91% rising / 80% falling thresholds and 2.5 ms delay-provides reliable system reset and rail monitoring for downstream logic. |
Pinout & Package
MPM3680GRE uses a thermally enhanced QFN-57 package (12 mm × 12 mm × 4 mm) with exposed thermal pad (GND-connected) and 57 terminals. Pin layout supports high-current routing: multiple VIN, GND, VOUT, and SW pads distributed across perimeter and center for low-inductance power loops and thermal spreading.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 47, 50, 52 | AGND | Analog ground reference for feedback and trimming-must be star-connected to minimize noise coupling into FB path. |
| 3, 45 | >DC_trim / DC_trim> | Dual-point DC output voltage trimming interface-enables precision regulation using external resistor network per datasheet Equation 1. |
| 5 | AC_trim | AC loop compensation node-connects to output via capacitor to improve phase margin with ceramic-only output caps. |
| 21–25, 55 | VOUT | Main regulated output node-multiple parallel pins reduce IR drop and support ≥6A continuous delivery with proper PCB copper weight. |
| 28–36, 56 | GND | Power ground return for high-side/low-side switches and inductor-requires wide copper pours and multiple vias to thermal pad for thermal management. |
| 38–41, 57 | VIN | Main input supply connection-distributed pins handle high di/dt during switching; requires local 10–22 μF ceramic + bulk capacitance. |
| 42, 44 | >FREQ / FREQ> | Frequency set interface-internal 430 kΩ resistor sets default fSW; external resistor between FREQ> and VIN enables full 200–1000 kHz tuning. |
| 43 | EN | Enable control with 1.3 V threshold and 250 mV hysteresis-supports automatic startup via resistive divider or logic-level control. |
| 46 | SS | Soft-start timing node-20 μA internal current source charges external capacitor; 3 ms default ensures monotonic ramp into pre-biased loads. |
| 48 | PG | Open-drain power-good indicator-pull-up required; asserts high after VOUT reaches 91% of target with 2.5 ms delay, critical for system sequencing. |
| 49 | VCC | Internal 4.8 V LDO output-floating by default; applying 5 V disables LDO to extend VIN min to 2.5 V and improve light-load efficiency. |
Key Features
| Feature | Design Value |
|---|---|
| Complete power solution | Integrates controller, dual MOSFETs, shielded inductor, input/output caps, and biasing-reduces BOM count to ≤2 external components (Rtrim + Ctrim). |
| Adaptive COT control | Eliminates need for external compensation; maintains stability across 10× output capacitance range (including all-ceramic designs) and delivers <10 μs load-step response. |
| Pre-bias start-up | Monotonically ramps output even when VOUT is pre-charged-prevents reverse current flow and ensures safe power sequencing in multi-rail systems. |
| Non-latch protection suite | OCP (valley + negative current), OVP (117–133% VREF), thermal shutdown (150°C)-recovers automatically via hiccup-mode retry without host intervention. |
| Efficiency-optimized biasing | Internal VCC LDO disable via external 5V reduces quiescent current and extends light-load efficiency-critical for always-on subsystems. |
Applications
| Telecom Base Stations | Servers & Data Center PSUs |
|---|---|
|
Use Scenario: Point-of-load regulation for FPGA transceivers and RF front-end ICs in macro/micro base stations. IC Role / Device Role / Timing Role: Primary 1.2V/1.8V/3.3V POL converter delivering 6A with <10 μs transient response to burst traffic loads. Use Value: Integrated inductor and COT control eliminate external compensation, reducing layout area by >40% versus discrete buck solutions while maintaining ±1% output accuracy. |
Use Scenario: Core voltage regulator for Xeon Scalable CPUs and AI accelerators in 1U/2U rack servers. IC Role / Device Role / Timing Role: High-current VRM stage supporting dynamic DVFS with precise 0.65–1.2V output and monotonic startup into pre-biased memory rails. Use Value: Dual-input-range operation (2.5–18V w/5V bias) allows direct use from 3.3V or 12V intermediate buses; PG signal enables coordinated PCH/CPU reset sequencing. |
| Flat Panel Displays | Distributed Power Systems |
|
Use Scenario: Main logic supply (1.1V/1.8V) and TCON bias (3.3V/5V) in 4K UHD LCD/LED TV backlights. IC Role / Device Role / Timing Role: Single-package solution replacing multi-component buck + LDO chains for display SoCs and timing controllers. Use Value: QFN-57's 4 mm height fits slim chassis constraints; integrated thermal pad enables >50W dissipation on 4-layer board without heatsink. |
Use Scenario: Isolated secondary-side regulation in industrial PLCs and medical imaging power trees. IC Role / Device Role / Timing Role: Compact, self-contained 6A module powering isolated ADCs, DACs, and sensor interfaces from 12V/24V bus. Use Value: Fully integrated filtering and EMI suppression (via internal shielded inductor) meets CISPR-32 Class B without external ferrites-reducing certification risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 6A step-down power module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPM3683-7GRE | Successor with improved thermal resistance (θJC = 4.2°C/W vs. 6.3°C/W), higher 8A rating, and updated COT algorithm for better light-load efficiency. | Recommended for new designs requiring >6A sustained current or tighter thermal margins in sealed enclosures. | Select MPM3683-7GRE for new designs-MPS explicitly states MPM3680 is NOT RECOMMENDED FOR NEW DESIGNS. |
| TPSM84624IRVCR | Texas Instruments' 6A module with fixed 500 kHz fSW, no external frequency programming, and different pinout (no AC_trim/DC_trim dual trimming). | Limited trimming flexibility and no pre-bias startup-suitable only where fixed-frequency operation and simpler feedback are acceptable. | Choose only if TI ecosystem alignment or qualification continuity outweighs MPM3680GRE's adaptive COT and dual-trim advantages. |
Compared with MPM3680GRE, MPM3683-7GRE offers superior thermal performance and future-proofing for new designs, while TPSM84624IRVCR trades trimming flexibility and startup robustness for TI-specific design reuse-making MPM3680GRE viable only for legacy replacement or cost-sensitive re-spins.
Availability
MPM3680GRE is available at Aetrix Electronics and suitable for telecom infrastructure, server power delivery, and flat-panel display applications requiring stable component supply and long-term industrial availability.
Supply support for MPM3680GRE 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 emphasis on energy-efficient DC/DC conversion and motor control solutions.
The MPM3680GRE belongs to MPS's integrated power module product line, engineered to replace complex discrete buck designs with compact, thermally optimized, and application-ready solutions for high-current POL applications.
FAQ
What is the recommended PCB layout practice for thermal management of the MPM3680GRE?
Use a minimum 4-layer board with dedicated inner GND and power planes. Connect the exposed thermal pad (center of QFN-57) to the internal GND plane using ≥9 thermal vias (0.3 mm diameter, 0.6 mm pitch). Surround VIN/VOUT/GND pins with ≥0.5 mm wide copper traces and fill unused areas with GND pour tied to thermal pad-achieving θJA ≈ 16.2°C/W per datasheet.
Can the MPM3680GRE operate with zero output capacitance?
No. The device requires ≥5 × 47 μF ceramic output capacitance (per datasheet Electrical Characteristics table) to maintain stability, meet ripple specifications (<1% VOUT), and enable proper soft-start ramp. Removing output caps causes oscillation, OVP false triggers, and potential damage due to uncontrolled inductor current slew.
How does the MPM3680GRE handle startup into a pre-biased output?
It enters monotonic pre-bias mode: the internal soft-start capacitor charging is held until its voltage exceeds the sensed FB voltage. Only then does PWM operation begin-preventing reverse current through the low-side FET and ensuring output rises smoothly without undershoot or overshoot.
What is the function of the AC_trim and DC_trim pins, and how do they differ?
DC_trim> and >DC_trim form a differential pair for precision DC output voltage trimming via external resistor network (Equation 1). AC_trim connects to output via capacitor to inject phase boost into the control loop-improving transient response and stability margin with low-ESR ceramic capacitors alone.
Is the MPM3680GRE RoHS-compliant and halogen-free?
Yes. Per MPS documentation, all MPM3680 variants-including MPM3680GRE-are lead-free, halogen-free, and fully compliant with the EU RoHS Directive 2011/65/EU. Full compliance data and material declarations are available on the MPS Quality Assurance website.
Why does the datasheet state "NOT RECOMMENDED FOR NEW DESIGNS"?
MPS issued this notice because the MPM3683-7GRE supersedes the MPM3680GRE with enhanced specs: lower thermal resistance (4.2 vs. 6.3°C/W), higher 8A rating, improved light-load efficiency, and updated protection algorithms-making it the preferred choice for reliability, performance, and long-term supply assurance.
MPM3680GRE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 57-PowerBFQFN Module
- Packaging:
- Tray
- Product Status:
- Obsolete
- Type:
- Non-Isolated PoL Module
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 18V
- Voltage - Output 1:
- 0.65 ~ 5V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 6A
- Power (Watts):
- -
- Voltage - Isolation:
- -
- Applications:
- ITE (Commercial)
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Efficiency:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 57-QFN (12x12)
- Control Features:
- -
- Approval Agency:
- -
- Standard Number:
- -
MPM3680GRE FAQ
1.How can I place an order for MPM3680GRE through Aetrix?
Please submit a Request for Quotation (RFQ) for MPM3680GRE 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 MPM3680GRE reliable?
The price and inventory of MPM3680GRE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPM3680GRE is usually 5 days.
3.What payment methods are accepted for MPM3680GRE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPM3680GRE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPM3680GRE?
MPM3680GRE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPM3680GRE 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 MPM3680GRE?
For technical support, including MPM3680GRE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPM3680GRE requirements.
6.How does Aetrix verify that MPM3680GRE is sourced from the original manufacturer or authorized distributors?
All MPM3680GRE 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 MPM3680GRE meets industry standards.
7.What is the process for return or replacement of MPM3680GRE?
All MPM3680GRE units undergo pre-shipment inspection (PSI). If there is an issue with MPM3680GRE, 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 MPM3680GRE part is unused and in its original packaging.
Return procedure for MPM3680GRE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPM3680GRE Tags
-
1S4E_0505S1.5U
GAPTEC Electronic
-
TPS631000DRLR
Texas Instruments
-
XCL209F083DR
Torex Semiconductor Ltd
-
SC202AMLTRT
Semtech Corporation
-
NME1S0505SC
Murata Power Solutions Inc.
-
XCL101A501ER-G
Torex Semiconductor Ltd
-
RFM-0505S
Recom Power
-
TEA 1-0505E
Traco Power
-
MIC33153YHJ-TR
Microchip Technology
-
TEA 1-0505
Traco Power
-
TPSM863252RDXR
Texas Instruments
-
RFB-0505S
Recom Power
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
