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Monolithic Power Systems Inc. MP2107DQ-LF-Z
- Part No.:
- MP2107DQ-LF-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
MP2107DQ-LF-Z.pdf
- Description:
- IC REG BUCK ADJ 4A 10QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,747
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Product details
Overview
MP2107DQ-LF-Z from Monolithic Power Systems is a 4A, 1.5MHz fixed-frequency synchronous step-down DC/DC regulator in a 3mm × 3mm 10-pin QFN package. It operates from 2.7V to 6V input, delivers adjustable output down to 0.8V, integrates 80mΩ high-side and 60mΩ low-side MOSFETs, and features power good (POK), frequency synchronization, and hiccup-mode short-circuit protection - used in FPGA core supplies and point-of-load regulation.
For engineers reviewing the MP2107DQ-LF-Z datasheet, MP2107DQ-LF-Z pinout, MP2107DQ-LF-Z application, or MP2107DQ-LF-Z equivalent, this page provides verified pin functions, thermal resistance (θJA = 50°C/W), soft-start timing (120µs), POK trip thresholds (±10% VOUT), and EN/SYNC logic thresholds (1.6V turn-on, 0.4V shutdown) - all confirmed from Monolithic Power's Rev. 1.1 datasheet.
Technical Context
The MP2107DQ-LF-Z uses peak current-mode PWM control with internal Type II compensation, eliminating external compensation components while supporting loop bandwidth tuning via FB resistor selection. Its transconductance gain of 11.25A/V links COMP voltage directly to output current, simplifying stability design for ceramic-capacitor-based outputs.
It implements dual-function EN/SYNC pin logic: TTL-compatible enable thresholds (0.4V/1.6V) and 1–2MHz external clock synchronization capability. The integrated bootstrap circuit drives the high-side N-channel MOSFET using a capacitor between BS and SW pins, enabling efficient 95% operation without external Schottky diodes at ≤2A loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 4A continuous - supports FPGA core rails and ASIC I/O supplies without external current boosting. |
| Input Voltage Range | 2.7V to 6V - compatible with single-cell Li-ion, USB PD, and 5V bus systems. |
| Switching Frequency | 1.5MHz fixed - enables compact magnetics (0.47–1µH inductors) and reduces EMI filtering burden. |
| Feedback Reference | 0.800V ±24mV - sets output voltage via external resistor divider; enables 0.8V–0.9×VIN adjustment. |
| Thermal Resistance | θJA = 50°C/W - requires ≥250mm² exposed pad copper area for full 4A operation at +85°C ambient. |
| Soft-Start Time | 120µs - prevents inrush current during power-up; disables switching if output is pre-biased. |
| Power Good Accuracy | ±10% VOUT window with 30µs deglitch - provides reliable system reset signaling for µP sequencing. |
Pinout & Package
MP2107DQ-LF-Z uses a thermally enhanced 3mm × 3mm 10-pin QFN package with exposed pad (connected to GND). Package meets JEDEC MO-229 VEED-5 standard; coplanarity ≤0.10mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (FB) | Feedback Input | Connects to resistive divider midpoint; compares against 0.8V internal reference to regulate output. |
| 2,9 (GND) | Ground Return | Dual ground pins reduce PCB impedance; must connect to large copper pour tied to input/output capacitor negatives. |
| 3,8 (SW) | Switch Node | High-current node connecting internal high/low-side MOSFETs to external inductor; requires short, wide trace. |
| 4,7 (IN) | Input Supply | Accepts 2.7–6V; requires two parallel 10–22µF ceramic capacitors placed adjacent to these pins. |
| 5 (BS) | Bootstrap Supply | Connects to SW via 0.1µF ceramic capacitor; powers high-side gate driver during duty cycles >50%. |
| 6 (EN/SYNC) | Enable & Sync Input | TTL-compatible enable (0.4V/1.6V thresholds); accepts 1–2MHz external clock for EMI reduction. |
| 10 (POK) | Open-Drain Power Good | Pulls low when VOUT deviates >±10%; requires external pull-up for µP reset assertion. |
Key Features
| Feature | Design Value |
|---|---|
| All-ceramic capacitor support | Eliminates electrolytic bulk caps; reduces board area and improves reliability over temperature. |
| Integrated 80mΩ/60mΩ MOSFETs | Enables >95% efficiency at 4A without external Schottky diode - reduces BOM count and layout complexity. |
| Cycle-by-cycle current limiting | Protects against overload and short-circuit by limiting peak inductor current per switching cycle. |
| Hiccup-mode short-circuit recovery | Shuts down, discharges soft-start cap, then restarts - prevents thermal runaway during sustained faults. |
| Internal soft-start with pre-bias handling | 120µs ramp prevents output overshoot; disables switching if FB voltage exceeds soft-start voltage at startup. |
Applications
| FPGA Core Supply | ASIC I/O Rail |
|---|---|
Use Scenario: Powering 1.2V–1.8V core domains of Xilinx Artix-7 or Intel Cyclone V FPGAs with dynamic load steps up to 4A. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering tightly regulated core voltage with <100mV transient deviation. Use Value: Internal 0.8V reference and 1.5MHz switching enable fast transient response and small 1µH inductor footprint. |
Use Scenario: Generating 2.5V or 3.3V I/O supply for multi-GHz SerDes interfaces in telecom baseband processors. IC Role / Device Role / Timing Role: Point-of-load regulator with POK signal synchronized to processor reset sequence. Use Value: ±10% POK accuracy and 30µs deglitch ensure deterministic power sequencing without false resets. |
| Network Equipment PoL | Industrial LCD Display Bias |
Use Scenario: Local 1.8V/3.3V conversion from 5V backplane in Ethernet switches and optical line cards. IC Role / Device Role / Timing Role: Compact, thermally robust buck converter operating continuously at 60°C ambient. Use Value: 50°C/W θJA and exposed-pad QFN allow full 4A output without heatsink in dense 4-layer PCB layouts. |
Use Scenario: Driving TFT panel gate drivers requiring stable 5V bias with low ripple in factory automation HMIs. IC Role / Device Role / Timing Role: Secondary regulator after primary 12V DC/DC, rejecting noise from display backlight switching. Use Value: 1.5MHz fixed frequency places switching harmonics beyond sensitive analog video bands. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2107ADN-LF-Z | 8-pin SOIC-EP package; includes dedicated VCC pin; higher θJA (50°C/W) but lower θJC (10°C/W). | Preferred for prototyping or low-volume designs where hand-soldering or thermal vias under SOIC pad are feasible. | Select when board space allows larger SOIC footprint and VCC bias flexibility is needed over QFN integration. |
| RT7295BGJ8F | 4A, 2.5–5.5V input, 1.2MHz, 0.6V reference; no POK or SYNC; 8-pin WDFN (2mm × 2mm). | Lacks power-good signaling and frequency synchronization - unsuitable for sequenced or noise-sensitive systems. | Choose only for cost-sensitive, non-sequenced applications where footprint minimization outweighs feature loss. |
Compared with MP2107DQ-LF-Z, MP2107ADN-LF-Z trades smaller size for easier assembly and VCC flexibility, while RT7295BGJ8F sacrifices POK/SYNC to achieve 2mm × 2mm footprint - making MP2107DQ-LF-Z optimal for space-constrained, sequenced, and EMI-controlled designs.
Availability
MP2107DQ-LF-Z is available at Aetrix Electronics and suitable for FPGA core supplies, ASIC I/O rails, and network equipment point-of-load regulation requiring stable component supply across industrial temperature range (−40°C to +85°C).
Supply support for MP2107DQ-LF-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 design centers in the US, China, and Taiwan.
The MP2107 series belongs to MPS's high-efficiency DC/DC converter product line, engineered specifically for compact, high-current point-of-load applications in computing, networking, and industrial electronics.
FAQ
What is the minimum recommended input capacitance for MP2107DQ-LF-Z?
Two parallel 10µF–22µF X5R/X7R ceramic capacitors are strongly recommended - one on each side of the QFN package, placed directly adjacent to IN and GND pins. This configuration suppresses high-frequency switching noise and ensures stable VCC bias for internal logic, especially critical at full 4A load.
Can MP2107DQ-LF-Z operate with an output pre-biased at startup?
Yes. The IC detects pre-bias on the FB pin and disables both high-side and low-side switches until the internal soft-start capacitor voltage exceeds the sensed output voltage. This prevents reverse current flow and ensures controlled ramp-up even when VOUT is initially non-zero.
How does the EN/SYNC pin behave when used for synchronization versus enable control?
When used for synchronization, a clean 1–2MHz square wave must be applied continuously; any ON/OFF period exceeding 4µs is interpreted as an enable command. For enable-only use, drive the pin above 1.6V (ON) or below 0.4V (OFF) for >4µs - no clock required.
What is the maximum achievable output voltage accuracy over temperature?
The FB reference voltage is specified as 0.776V to 0.824V (±3%) over −40°C to +85°C. Combined with resistor divider tolerance, total output error remains within ±4% for typical 1% feedback resistors - sufficient for FPGA core and I/O rail requirements.
Is an external Schottky diode required for MP2107DQ-LF-Z?
No - the integrated 60mΩ synchronous rectifier eliminates need for external diode at ≤2A loads. However, Monolithic Power recommends adding a B0530 Schottky diode across SW and GND for >2A applications to minimize negative voltage spikes and improve efficiency by ~0.5%.
What PCB layout practices prevent instability in MP2107DQ-LF-Z designs?
Key practices include: (1) placing input capacitors directly on both sides of the QFN package, (2) routing SW with short/wide traces away from FB and POK, (3) connecting all GND pins to a solid inner-layer ground plane, and (4) keeping FB trace length under 5mm with no test points or vias - per MPS EVB guidelines.
Does MP2107DQ-LF-Z support forced PWM mode under light load?
No. The MP2107DQ-LF-Z operates exclusively in fixed-frequency PWM mode across all load conditions - it does not enter power-save or discontinuous conduction mode. This ensures constant switching frequency for predictable EMI filtering and transient response.
MP2107DQ-LF-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 5.4V
- Current - Output:
- 4A
- Frequency - Switching:
- 1.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-QFN (3x3)
MP2107DQ-LF-Z FAQ
1.How can I place an order for MP2107DQ-LF-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2107DQ-LF-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 MP2107DQ-LF-Z reliable?
The price and inventory of MP2107DQ-LF-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2107DQ-LF-Z is usually 5 days.
3.What payment methods are accepted for MP2107DQ-LF-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2107DQ-LF-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2107DQ-LF-Z?
MP2107DQ-LF-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2107DQ-LF-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 MP2107DQ-LF-Z?
For technical support, including MP2107DQ-LF-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2107DQ-LF-Z requirements.
6.How does Aetrix verify that MP2107DQ-LF-Z is sourced from the original manufacturer or authorized distributors?
All MP2107DQ-LF-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 MP2107DQ-LF-Z meets industry standards.
7.What is the process for return or replacement of MP2107DQ-LF-Z?
All MP2107DQ-LF-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP2107DQ-LF-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 MP2107DQ-LF-Z part is unused and in its original packaging.
Return procedure for MP2107DQ-LF-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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