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Monolithic Power Systems Inc. MP2110GQ-P
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- Part No.:
- MP2110GQ-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 14-VFDFN Exposed Pad
- Datasheet:
-
MP2110GQ-P.pdf
- Description:
- IC REG BUCK ADJ 3A 14QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,760
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Product details
Overview
MP2110GQ-P from Monolithic Power Systems is a 3A synchronous step-down DC-DC converter with integrated programmable input current limit switch, designed for USB-powered portable systems. It delivers regulated output voltages from 0.6V to 5V across 3.3–5.4V continuous input (12V transient tolerant), features 1.5MHz switching frequency, 70mΩ/50mΩ internal MOSFETs, and constant-on-time control for fast transient response in wireless modems and smart phones.
For engineers reviewing the MP2110GQ-P datasheet, MP2110GQ-P pinout, MP2110GQ-P application, or MP2110GQ-P equivalent, key selection criteria include input current limit programming via RSET, thermal shutdown at 160°C, OVP clamping at 5.65V, dual enable pins (ENREG/ENSYS), and NTC-based temperature sensing for battery-powered safety-critical designs.
Technical Context
The MP2110GQ-P integrates two functional blocks: a high-efficiency synchronous buck regulator (with COT control, 0.6V feedback reference, and 100% duty-cycle capability) and an independent input current limit switch (with programmable 0.3–3A threshold, 70mΩ on-resistance, and 5.65V output overvoltage clamp). Both share SYSIN supply but operate with separate enables (ENREG for buck, ENSYS for current limiter).
Its COT architecture uses input voltage feed-forward to maintain stable 1.5MHz switching across input/output ranges, while proprietary light-load control eliminates switching-node ringing by regulating low-side FET conduction instead of hard cutoff-enabling high efficiency down to <100mA without external DCM control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 3A continuous load current with 100% duty-cycle support for low-VOUT applications like 1.2V core rails. |
| Input Voltage Range | 3.3V–5.4V continuous; withstands 12V transients-enables direct USB 2.0/3.0 and single-cell Li-ion compatibility. |
| Switching Frequency | 1.5MHz fixed-frequency operation-permits compact 1μH inductors and reduces EMI filter size in space-constrained PCBs. |
| Feedback Reference | 0.600V ±2% (2.7–6V REGIN)-enables precise output regulation with standard resistor dividers for 1.8V, 3.3V, or custom VOUT. |
| Current Limit Accuracy | ±10% when ILIMIT > 1A-ensures reliable USB port compliance and prevents host-side overcurrent faults during hot-plug events. |
| OVP Clamp Voltage | 5.65V typical-protects downstream 5V logic and USB PHY circuitry from overvoltage during input surges or regulator fault conditions. |
| Thermal Shutdown | 160°C trip with 20°C hysteresis-prevents permanent damage during sustained overload or poor heatsinking in sealed enclosures. |
Pinout & Package
MP2110GQ-P is housed in a thermally enhanced 14-pin QFN package (3mm × 3mm, 0.5mm pitch) with exposed thermal pad connected to PGND. The package supports high-power density layouts with low θJA (50°C/W) on 4-layer PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 PGND | Power Ground | Internal source connection of low-side NFET; must be tied directly to exposed pad and system ground plane for thermal and EMI performance. |
| 3, 4 REGIN | Buck Regulator Input / Current Limit Switch Output | Supplies buck stage; clamped at 5.65V during overvoltage-requires large tantalum capacitor (≥330μF) for peak current buffering. |
| 5 ENREG | Buck Regulator Enable | Active-high logic input; controls main converter only-allows independent sequencing of power rail and current-limit protection. |
| 6 RSET | Input Current Limit Programming | Resistor-to-ground sets 0.3–3A limit per table; accuracy degrades below 1A-critical for USB 500mA/900mA compliance. |
| 7 AGND | Analog Ground | Separate analog reference ground for FB, NTC, and internal comparators-must be star-connected to avoid noise coupling into feedback path. |
| 8 ENSYS | Current Limit Switch Enable | Active-low input with internal pull-down; disables current limiting independently-used for dynamic power budgeting in multi-rail systems. |
| 9 FB | Feedback Input | 0.6V reference node; connects to resistor divider midpoint-determines output voltage; sensitive to trace length and noise. |
| 10 OUT | Output Voltage Sense | Direct connection to output rail for remote sensing-compensates for PCB IR drop in high-current paths (>1A). |
| 11 NTC | Thermistor Interface | Accepts voltage divider from SYSIN through NTC thermistor; trips at 14.5% VSYSIN (≈725mV @ 5V) for thermal foldback. |
| 12 SYSIN | Main Input Supply | Primary power for current limit switch; powers internal bias circuits-requires local 10μF ceramic decoupling near pin. |
| 13, 14 SW | Power Switch Node | Drain connection of internal PFET/NFET; drives external inductor-high di/dt node requiring short, wide routing away from analog traces. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Input Current Limit | 0.3–3A via single RSET resistor-enables flexible USB power negotiation without firmware or external controllers. |
| Integrated Dual MOSFETs | 70mΩ high-side + 50mΩ low-side synchronous switches-eliminates external Schottky diode and improves full-load efficiency to 95%. |
| Independent Enable Control | Separate ENREG (buck) and ENSYS (current limit) pins-supports staggered power-up, fault isolation, and dynamic current budgeting. |
| NTC-Based Thermal Protection | Voltage threshold tracking (14.5%/27% of VSYSIN) with external thermistor-provides board-level temperature monitoring beyond die junction limits. |
| Output Overvoltage Clamp | 5.65V regulated clamp on REGIN pin-protects downstream 5V peripherals during input surge or regulator instability events. |
Applications
| Wireless Modem Data Cards | USB-Powered Portable Instruments |
|---|---|
|
Use Scenario: Compact LTE/5G data cards drawing up to 3A peak current from USB 3.0 ports during transmission bursts. IC Role / Device Role / Timing Role: Primary 3.3V/3.6V power rail generator with input current limiting to stay within USB 900mA spec during enumeration. Use Value: Prevents host port shutdown by enforcing programmable 900mA limit during link setup, then scaling to 3A after enumeration completes. |
Use Scenario: Handheld multimeters and oscilloscopes powered solely by USB-C PD adapters with variable 5V/9V inputs. IC Role / Device Role / Timing Role: Input-transient-tolerant buck converter delivering stable 3.3V logic rail from noisy 5V USB sources. Use Value: 12V transient tolerance and 5.65V OVP clamp protect precision analog front-end ICs from USB line spikes and adapter faults. |
| Smartphone Peripheral Modules | Li-ion Battery-Powered IoT Sensors |
|
Use Scenario: External camera modules or audio DACs connecting to smartphones via USB OTG, requiring clean 1.8V/2.5V rails. IC Role / Device Role / Timing Role: Low-noise, high-PSRR buck regulator with 0.6V reference enabling accurate sub-2V outputs for sensor interfaces. Use Value: Constant-on-time control ensures <10μs transient recovery from 0→3A load steps-maintains ADC reference stability during burst sampling. |
Use Scenario: Long-life environmental sensors powered by single-cell Li-ion (3.0–4.2V) with strict quiescent current requirements. IC Role / Device Role / Timing Role: High-efficiency 3A capable converter operating down to 3.3V input, with 230μA no-switching IQ and hiccup-mode short-circuit protection. Use Value: Light-load proprietary control extends battery runtime by eliminating discontinuous conduction mode ringing losses below 100mA. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter with input current limit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2112GQ-P | Same pinout and function but rated for 2A output (vs. 3A); lower RDSON (60mΩ/45mΩ) and 2.2MHz switching. | Better suited for space-constrained 2A applications where higher frequency allows smaller magnetics; lacks 12V transient rating. | Select when board area is critical and peak load ≤2A; verify thermal margin with 2.2MHz switching losses. |
| TPS62130ARGTR | TI part with 3A rating, 2.5MHz, but no integrated input current limit switch or NTC interface-requires external components for USB compliance. | Requires external current-sense amplifier and comparator for programmable limit; no built-in thermal foldback via NTC. | Choose only if existing TI ecosystem mandates compatibility; adds BOM cost and layout complexity for USB current limiting. |
Compared with MP2112GQ-P, MP2110GQ-P delivers higher output current and transient robustness at the cost of larger inductors; versus TPS62130ARGTR, it integrates USB-specific protection functions-reducing component count and validation effort for portable designs.
Availability
MP2110GQ-P is available at Aetrix Electronics and suitable for wireless modem data cards, USB-powered portable instruments, and smartphone peripheral modules requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MP2110GQ-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 MP2110 belongs to MPS's USB-optimized power management portfolio, engineered specifically for portable electronics requiring integrated current limiting, thermal safety, and compact 3×3mm footprint-targeting USB OTG, mobile accessories, and battery-powered instrumentation.
FAQ
What is the minimum output voltage supported by MP2110GQ-P?
The MP2110GQ-P supports output voltages as low as 0.6V, set by its internal 0.600V ±2% feedback reference voltage. This enables direct generation of core voltages for modern low-power microcontrollers and RF ICs without external amplification or level-shifting circuitry.
How does the programmable input current limit function during USB enumeration?
During USB enumeration, the RSET resistor configures the MP2110GQ-P to enforce a precise 500mA or 900mA limit before host authorization. Once enumerated, firmware can assert ENREG to enable full 3A operation-ensuring compliance with USB specifications while maximizing available power post-configuration.
Can MP2110GQ-P operate with a 3.0V input supply?
No-MP2110GQ-P requires a minimum continuous input voltage of 3.3V per its recommended operating conditions. While it tolerates 12V transients, operation below 3.3V violates the VSYSIN_R UVLO threshold (2.2–2.6V), causing the device to shut down and prevent unstable regulation.
What is the role of the EXPOSED PAD in thermal management?
The exposed thermal pad must be soldered to a solid PGND copper plane with ≥4 thermal vias (0.3mm diameter) to achieve the specified θJA of 50°C/W. Without this connection, junction temperature rise exceeds safe limits under 3A load, triggering thermal shutdown within seconds.
Does MP2110GQ-P support forced PWM mode or only COT operation?
The MP2110GQ-P operates exclusively in constant-on-time (COT) mode with input voltage feed-forward. It does not support forced PWM or frequency synchronization. Its COT architecture provides inherent fast transient response and automatic light-load efficiency optimization without external compensation.
How is the NTC thermistor interface calibrated for different temperature thresholds?
The NTC pin compares voltage against fixed percentages of VSYSIN (14.5% trip, 27% recovery). Thresholds scale linearly with input voltage-e.g., at 5.0V SYSIN, trip occurs at 725mV and recovery at 1.35V. Resistor values (RNTC, R4) are selected per thermistor curve to map board temperature to these voltage thresholds.
What failure protections are active during a short-circuit event at the output?
Upon output short, MP2110GQ-P enters hiccup-mode protection: it disables power stages, discharges soft-start capacitance, waits ~100μs, then attempts auto-restart. This cycle repeats until fault clears-limiting average power dissipation to safe levels and preventing thermal runaway or MOSFET destruction.
MP2110GQ-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 14-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.3V
- Voltage - Input (Max):
- 5.4V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5V
- Current - Output:
- 3A
- Frequency - Switching:
- 1.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-QFN (3x3)
MP2110GQ-P FAQ
1.How can I place an order for MP2110GQ-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2110GQ-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 MP2110GQ-P reliable?
The price and inventory of MP2110GQ-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2110GQ-P is usually 5 days.
3.What payment methods are accepted for MP2110GQ-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2110GQ-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2110GQ-P?
MP2110GQ-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2110GQ-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 MP2110GQ-P?
For technical support, including MP2110GQ-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2110GQ-P requirements.
6.How does Aetrix verify that MP2110GQ-P is sourced from the original manufacturer or authorized distributors?
All MP2110GQ-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 MP2110GQ-P meets industry standards.
7.What is the process for return or replacement of MP2110GQ-P?
All MP2110GQ-P units undergo pre-shipment inspection (PSI). If there is an issue with MP2110GQ-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 MP2110GQ-P part is unused and in its original packaging.
Return procedure for MP2110GQ-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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