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Monolithic Power Systems Inc. MPM3814GPA-P
- Part No.:
- MPM3814GPA-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 14-PowerLFLGA Module
- Datasheet:
-
MPM3814GPA-P.pdf
- Description:
- 2.75V TO 6V, 1A, ULTRA-SMALL, UL
- Quantity:
- Payment:
- Shipping:
Inventory:2,944
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Product details
Overview
MPM3814GPA-P from Monolithic Power Systems is a synchronous step-down power module with integrated inductor, delivering up to 1A continuous output current across a 2.75V–6V input range and regulating output voltage down to 0.6V. It employs constant-on-time (COT) control with VIN feed-forward for stable 2.2MHz switching frequency, operates in AAM mode at light loads for ultra-low quiescent current (65μA), and includes EN, PG, and full protection (OCP, SCP hiccup, thermal shutdown). It powers low-voltage I/O rails in space-constrained SSDs and portable systems.
For engineers reviewing the MPM3814GPA-P datasheet, MPM3814GPA-P pinout, MPM3814GPA-P application, or MPM3814GPA-P equivalent, key selection criteria include its ECLGA-14 (2.5mm×2.5mm×1.2mm) ultra-small footprint, 0.6V adjustable VOUT capability, 100% duty-cycle dropout operation, ±10% PG threshold accuracy, and minimal external component count (only FB resistors, CIN, COUT).
Technical Context
The MPM3814GPA-P uses a constant-on-time (COT) control architecture with VIN feed-forward to maintain near-constant 2.2MHz switching frequency across input and output voltage variations. Its internal 1μH inductor eliminates external magnetics, and the dual-ground architecture separates AGND (analog reference) from PGND (power return) to minimize noise coupling into the feedback loop.
Advanced Asynchronous Modulation (AAM) enables discontinuous conduction mode (DCM) at light loads via zero-current detection (ZCD), reducing switching losses while maintaining regulation. The device transitions seamlessly to continuous conduction mode (CCM) under heavy load, achieving <5.6mV output ripple at 1A with 22μF COUT and delivering up to 95% efficiency between 3.3V and 2.5V outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.75V to 6V - supports single-cell Li-ion, USB PD, and wide-input industrial rails without pre-regulation. |
| Output Current | 1A continuous - sufficient for powering FPGA I/O banks, microcontroller cores, or sensor subsystems. |
| Output Voltage Range | 0.6V to 6V - adjustable via external resistor divider; 0.6V minimum enables direct core supply for modern low-VDD logic. |
| Switching Frequency | 2.2MHz typical - enables use of small 22μF ceramic capacitors and reduces EMI filter size. |
| Quiescent Current | 65μA - ensures battery runtime extension in always-on portable applications. |
| Thermal Resistance θJA | 56.7°C/W - allows 1A operation at +85°C ambient with standard 2-layer PCB layout per EVM3814-PA-00A. |
| PG Accuracy | ±10% of 0.6V FB threshold - provides reliable power-good assertion for sequenced system startup. |
Pinout & Package
ECLGA-14 package (2.5mm × 2.5mm × 1.2mm) with exposed thermal pad on bottom; requires solder paste stencil optimization and thermal vias to inner ground planes for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switch node | Internal high-side MOSFET drain; must be routed with minimal loop area to reduce EMI and voltage spikes. |
| 2,7,8 PGND | Power ground | High-current return path for inductor and output capacitor; connects directly to thermal pad. |
| 3 EN | Enable control | Active-high logic input (1.2V threshold); internal pull-down enables default-off behavior. |
| 4 AGND | Analog ground | Reference for FB comparator and internal bias; must tie to PGND at single point near IC to avoid noise injection. |
| 5 FB | Feedback input | Senses divided output voltage; sets VOUT = 0.6V × (1 + R1/R2); high-impedance (10nA) minimizes divider current loss. |
| 6 OUT_S | Output voltage sense | Remote sensing input for improved load regulation; connects directly to load for precision voltage delivery. |
| 9,10 OUT | Power output | Main power delivery path; parallel pins reduce resistance and inductance for 1A continuous current. |
| 11 PG | Power good indicator | Open-drain output with 440kΩ internal pull-up to IN; asserts high when VFB is within ±10% of 0.6V. |
| 12,13,14 IN | Power input | High-current input path; multiple pins reduce IR drop and improve decoupling effectiveness. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1μH inductor | Eliminates external magnetics, reduces BOM count, and guarantees consistent inductance and saturation current. |
| AAM + ZCD light-load mode | Enables DCM operation even near dropout (VOUT ≈ VIN), cutting quiescent current to 65μA without sacrificing regulation. |
| 100% duty-cycle operation | Supports LDO-like behavior during input brownout, maintaining regulated output down to VIN = VOUT + dropout resistance × IOUT. |
| Four-component design | Only FB resistors, input cap (22μF), output cap (22μF), and optional feedforward cap required - accelerates layout and validation. |
| Hiccup-mode short-circuit protection | Auto-retries after fault clearance; prevents thermal runaway and enables robust field operation in unattended systems. |
Applications
| SSD I/O Power | Portable MCU Core Supply |
|---|---|
Use Scenario: Powering 1.2V/1A NAND flash interface and controller I/O in M.2 NVMe SSDs with strict height constraints. IC Role / Device Role / Timing Role: Primary DC-DC regulator replacing discrete buck + inductor; delivers stable rail with <68mV load transient peak-to-peak deviation. Use Value: ECLGA-14 footprint (2.5mm²) fits beneath SSD controller die; 2.2MHz switching avoids audible noise and simplifies filtering. | Use Scenario: Supplying 0.8V–1.1V core voltage to ARM Cortex-M7 microcontrollers in handheld medical sensors. IC Role / Device Role / Timing Role: High-efficiency, low-noise core regulator with soft-start and PG sequencing for safe boot. Use Value: 65μA quiescent current extends battery life; AAM mode maintains regulation during sleep states without burst-mode artifacts. |
| LDO Replacement in Industrial PLC | Space-Constrained FPGA I/O Bank |
Use Scenario: Replacing inefficient 3.3V-to-2.5V LDOs in programmable logic controller I/O modules with 24V input rails. IC Role / Device Role / Timing Role: Step-down converter operating at 100% duty cycle during 3.3V input dips, ensuring uninterrupted 2.5V output. Use Value: Dropout resistance of 105mΩ enables >90% efficiency at light loads where LDOs waste >50% power as heat. | Use Scenario: Delivering 1.8V/1A to Xilinx Artix-7 FPGA I/O banks on compact edge AI inference modules. IC Role / Device Role / Timing Role: Compact, low-ripple power source with remote sensing (OUT_S) to compensate for PCB trace IR drop. Use Value: OUT_S pin enables ±1% output accuracy at load point despite 100mΩ board resistance; PG signal validates rail before configuration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down power module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSM10501S | Higher 2.5A rating, larger 3mm×3mm QFN, no OUT_S pin, fixed 1.2V output option only. | Better suited for higher-current FPGA core rails but lacks remote sensing and adjustable VOUT flexibility. | Select when >1A output or fixed 1.2V simplifies design; avoid if 0.6V adjustability or space <2.5mm² is required. |
| RT6220AGQW | 3A rating, 2.5MHz COT control, no integrated inductor, requires external 1.5μH coil and more passive components. | Offers higher current and frequency but increases layout complexity, BOM count, and EMI tuning effort. | Choose for designs needing >1A or custom inductor selection; skip if minimizing component count and footprint is critical. |
Compared with TSM10501S and RT6220AGQW, the MPM3814GPA-P uniquely balances ultra-small size (2.5mm²), true 0.6V adjustability, integrated inductor, and remote sensing - making it optimal for sub-1A, height-sensitive embedded applications where BOM reduction and layout simplicity are prioritized over raw current headroom.
Availability
MPM3814GPA-P is available at Aetrix Electronics and suitable for SSD power delivery, portable MCU core supplies, industrial PLC I/O regulation, and FPGA I/O bank powering requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MPM3814GPA-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 and modules, with over two decades of expertise in DC-DC conversion, motor drivers, and LED lighting solutions.
The MPM3814 product line targets ultra-compact, low-noise power delivery for space-constrained portable, storage, and industrial edge devices - emphasizing integration, efficiency, and ease-of-use through fully tested, inductor-integrated modules.
FAQ
What is the maximum recommended PCB temperature rise for continuous 1A operation?
At 1A load and 25°C ambient, the junction temperature rise is calculated as PD × θJA. With ~120mW dissipation (based on 87% efficiency at 3.6V→1.2V), ΔTJ ≈ 6.8°C. Using θJA = 56.7°C/W, the absolute max ambient for TJ ≤ 125°C is ~105°C - but derating to 85°C ambient ensures margin for board-level hotspots and long-term reliability.
Can the MPM3814GPA-P operate without the OUT_S pin connected?
Yes - the OUT_S pin is optional. When left unconnected, the device regulates based on FB voltage at the IC's OUT pin. However, omitting OUT_S forfeits remote sensing benefits: load regulation degrades to ±0.5% over 1A due to PCB trace IR drop, versus ±0.1% with OUT_S tied directly to the load.
How does the AAM mode affect output voltage ripple at light loads?
In AAM mode, the MPM3814GPA-P enters discontinuous conduction mode (DCM) with variable frequency, reducing switching losses but increasing low-frequency ripple amplitude. Measured ripple rises from <5.6mV (1A, CCM) to ~15mV peak-to-peak at 10mA load - still acceptable for most digital I/O, but not for noise-sensitive analog circuits without additional LC filtering.
Is the EN pin compatible with 1.8V logic microcontrollers?
Yes - the EN pin has a guaranteed logic-high threshold of 1.2V (min) and draws only 2μA at 2V. A 1.8V GPIO can directly drive EN without level shifting; the internal pull-down ensures safe default-off state during MCU reset or power-up sequencing.
What is the minimum output capacitance required for stability?
The datasheet specifies 10μF minimum COUT for stability across all operating conditions. Using <10μF risks phase margin loss and potential oscillation, especially at light loads or high temperatures. For best transient response and ripple suppression, 22μF X5R/X7R ceramic is recommended - placed within 3mm of the OUT and PGND pins.
Does the PG pin require an external pull-up resistor?
No - the PG pin has an internal 440kΩ pull-up to IN. An external pull-up is unnecessary and may interfere with open-drain operation. If interfacing with a 3.3V logic system, ensure the host MCU's input threshold is ≤0.4V low and ≥4V high to correctly interpret PG's 0.4V low / IN-referenced high states.
How does thermal shutdown hysteresis impact recovery behavior?
Thermal shutdown triggers at 150°C junction temperature and releases at 120°C (30°C hysteresis). During recovery, the device remains latched off until TJ drops below 120°C, then performs full soft-start (1.7ms ramp). This prevents cycling and allows board cooling - critical for enclosed industrial enclosures with limited airflow.
MPM3814GPA-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 14-PowerLFLGA Module
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Non-Isolated PoL Module
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.75V
- Voltage - Input (Max):
- 6V
- Voltage - Output 1:
- 0.6 ~ 6V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 1A
- Power (Watts):
- 6 W
- Voltage - Isolation:
- -
- Applications:
- ITE (Commercial)
- Features:
- Adjustable Output, Remote On/Off, Remote Sense
- Operating Temperature:
- -40°C ~ 125°C
- Efficiency:
- 87%
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-ECLGA (2.5x2.5)
- Control Features:
- Enable, Active High
- Approval Agency:
- -
- Standard Number:
- -
MPM3814GPA-P FAQ
1.How can I place an order for MPM3814GPA-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPM3814GPA-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 MPM3814GPA-P reliable?
The price and inventory of MPM3814GPA-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPM3814GPA-P is usually 5 days.
3.What payment methods are accepted for MPM3814GPA-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPM3814GPA-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPM3814GPA-P?
MPM3814GPA-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPM3814GPA-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 MPM3814GPA-P?
For technical support, including MPM3814GPA-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPM3814GPA-P requirements.
6.How does Aetrix verify that MPM3814GPA-P is sourced from the original manufacturer or authorized distributors?
All MPM3814GPA-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 MPM3814GPA-P meets industry standards.
7.What is the process for return or replacement of MPM3814GPA-P?
All MPM3814GPA-P units undergo pre-shipment inspection (PSI). If there is an issue with MPM3814GPA-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 MPM3814GPA-P part is unused and in its original packaging.
Return procedure for MPM3814GPA-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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