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Monolithic Power Systems Inc. MP2012DQ-LF-P
- Part No.:
- MP2012DQ-LF-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 6-VDFN Exposed Pad
- Datasheet:
-
MP2012DQ-LF-P.pdf
- Description:
- IC REG BUCK ADJ 1.5A 6QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,451
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Product details
Overview
MP2012DQ-LF-P from Monolithic Power Systems is a fully integrated, internally compensated 1.2MHz synchronous step-down DC/DC converter optimized for single-cell Li+-powered portable devices. It operates from 2.7V to 6V input, delivers up to 1.5A continuous load current, regulates output down to 0.8V, supports 100% duty cycle for low-dropout operation, and integrates high-side PFET and low-side NFET switches in a QFN6 (3×3mm) package.
For engineers reviewing the MP2012DQ-LF-P datasheet, MP2012DQ-LF-P pinout, MP2012DQ-LF-P application, or MP2012DQ-LF-P equivalent, this device is selected for compact, high-efficiency power rails in battery-constrained systems where ceramic-capacitor stability, thermal shutdown, and cycle-by-cycle overcurrent protection are required.
Technical Context
The MP2012DQ-LF-P implements peak current-mode PWM control with internal slope compensation, enabling stable regulation across 0–100% duty cycle without external compensation. Its fixed 1.2MHz switching frequency minimizes inductor size while maintaining forced PWM operation to avoid subharmonic oscillation above 50% duty cycle.
It integrates both power FETs-0.25Ω typical high-side PFET and 0.2Ω typical low-side NFET-and uses a precision 0.8V ±1.6% feedback reference (0.776V to 0.824V over temperature) with −2nA typical FB bias current for accurate output voltage setting via external resistor divider.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 6V - supports full discharge range of single Li+ cell (3.0–4.2V nominal, down to 2.7V cutoff). |
| Output Current | 1.5A continuous - sufficient for core logic or RF subsystems in smartphones and portable instruments. |
| Switching Frequency | 1.2MHz (±167kHz) - enables use of ≤3.3μH inductors and reduces EMI filtering footprint. |
| Feedback Reference | 0.8V ±1.6% over −40°C to +85°C - ensures <±2% output accuracy with standard 1% resistors. |
| Shutdown Current | 1μA max at VIN = 6V - preserves battery life during system sleep modes. |
| Thermal Shutdown | 150°C trip with 20°C hysteresis - protects die under sustained overload or poor PCB thermal design. |
| Efficiency | Up to 95% at 1.5A, VIN = 5V, VOUT = 1.8V - minimizes power loss and board heating in space-constrained layouts. |
Pinout & Package
MP2012DQ-LF-P is housed in a thermally enhanced QFN6 package (3mm × 3mm, 0.95mm height) with an exposed pad electrically and thermally connected to GND. The package supports reflow soldering per JEDEC MO-229 VEEA-2 and requires controlled land pattern per manufacturer recommendation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 FB | Feedback input | High-impedance node sensing output voltage via resistor divider; sets regulated VOUT = 0.8V × (1 + R1/R2). |
| 2 GND | Ground / Exposed Pad | Primary return path for power and signal; exposed pad must be soldered to large PCB ground plane for θJA = 50°C/W. |
| 3 SW | Switch node | Drives external inductor; connects internally to source of low-side NFET and drain of high-side PFET. |
| 4 PVIN | Power FET supply | Bypasses high-current PFET path; requires local 10μF X5R/X7R ceramic capacitor near pin. |
| 5 VIN | Controller supply | Powers internal logic and gate drivers; decoupled separately from PVIN to reduce noise coupling. |
| 6 EN | Enable input | Active-high logic input with 1MΩ internal pull-down; 1.0V typical threshold enables operation above 2.7V input. |
Key Features
| Feature | Design Value |
|---|---|
| 100% Duty Cycle Operation | Enables dropout regulation down to VIN − VDS(ON)PFET − IL × DCRINDUCTOR, critical for Li+ end-of-discharge support. |
| Ceramic-Capacitor Stability | Internally compensated peak-current-mode architecture eliminates need for external Type-II/III compensation networks. |
| Cycle-by-Cycle Overcurrent Protection | Monitors switch current each cycle and limits peak IL to 3.0A typ., preventing MOSFET thermal runaway during overload. |
| Short-Circuit Foldback | Reduces switching frequency and PFET current limit when FB < 0.3V, limiting short-circuit power dissipation to safe levels. |
| Low Shutdown Quiescent Current | 1μA max draw extends shelf life and standby time in always-on sensor or RTC circuits. |
Applications
| Smartphones | Digital Cameras |
|---|---|
|
Use Scenario: Core SoC I/O or camera ISP power rail in slim form factor designs. IC Role / Device Role / Timing Role: Primary buck regulator delivering 1.8V/1.5A from single Li+ cell with minimal PCB area. Use Value: 95% efficiency at 1.5A reduces thermal load on stacked PCB layers; 1.2MHz switching allows 3.3μH inductor footprint < 7mm². |
Use Scenario: Image sensor analog supply requiring low-noise, tightly regulated 2.5V or 3.3V. IC Role / Device Role / Timing Role: Synchronous step-down converter with fast transient response to handle burst-mode sensor readout current spikes. Use Value: Cycle-by-cycle current limiting prevents output collapse during 1A load steps; 0.8V FB reference enables precise output setting with 1% resistors. |
| PDA Main Logic Rail | Portable Test Instruments |
|
Use Scenario: FPGA or microcontroller core voltage (1.2V–1.8V) in handheld diagnostic tools. IC Role / Device Role / Timing Role: High-efficiency, low-quiescent buck converter supporting dynamic voltage scaling and deep-sleep modes. Use Value: 1μA shutdown current extends battery runtime between measurements; 100% duty cycle maintains regulation down to 2.7V input. |
Use Scenario: Precision analog front-end (AFE) supply in battery-operated multimeters or data loggers. IC Role / Device Role / Timing Role: Low-ripple, thermally robust DC/DC stage powering op-amps and ADC references. Use Value: Exposed-pad QFN6 package achieves 50°C/W θJA, enabling 1.5A operation without heatsink in 70°C ambient environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2152DJ-LF-Z | Higher 2A output rating, 2.2MHz switching, improved light-load efficiency via PFM mode, same QFN6 (3×3mm) footprint. | Supports higher-current loads and tighter EMI filtering requirements; not drop-in due to different EN/FB behavior and no 100% duty cycle. | Select when upgrading from MP2012DQ-LF-P for increased current headroom or faster transient response; requires layout review for EN timing and loop compensation. |
| TPS62231DRVR | TI part: 1.8–6.5V input, 1.5A, 3.6MHz fixed frequency, 0.8V reference, but lacks 100% duty cycle and uses different pinout (SW/FB swapped). | Preferred for ultra-small inductor solutions (<1.5μH); unsuitable for Li+ end-of-life support below 2.8V due to UVLO and no 100% mode. | Choose only if 3.6MHz operation and minimal inductor size outweigh need for dropout capability and Monolithic Power's thermal performance. |
Compared with MP2152DJ-LF-Z and TPS62231DRVR, MP2012DQ-LF-P uniquely provides 100% duty cycle operation and proven thermal robustness in QFN6 for legacy Li+ systems, while trading off PFM efficiency and higher-frequency EMI filtering flexibility.
Availability
MP2012DQ-LF-P is available at Aetrix Electronics and suitable for smartphone power management, digital camera sensor rails, PDA main logic supplies, and portable test instrument AFEs requiring stable component supply across extended production lifecycles.
Supply support for MP2012DQ-LF-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 mixed-signal ICs for power management, motion control, and automotive applications.
The MP2012 belongs to MPS's low-voltage synchronous buck converter product line, designed specifically for space- and efficiency-critical portable electronics powered by single-cell lithium-ion batteries.
FAQ
What is the maximum recommended output current for MP2012DQ-LF-P at 70°C ambient temperature?
The MP2012DQ-LF-P supports 1.5A continuous output current at TA = 70°C when mounted on a 4-layer PCB with the exposed pad fully soldered to a ≥1cm² copper pour. Thermal calculations using θJA = 50°C/W and TJ(MAX) = 150°C confirm 1.6W max dissipation, consistent with 1.5A at 1.8V output and typical losses.
Can MP2012DQ-LF-P regulate output voltage below 0.8V?
No. The internal feedback reference is trimmed to 0.8V ±1.6% and is not adjustable below that value. Output voltages lower than 0.8V cannot be achieved using the standard FB network configuration; the device will not regulate correctly if forced below this threshold.
Is MP2012DQ-LF-P pin-compatible with MP2152DJ-LF-Z?
No. Although both use QFN6 (3×3mm) packages, MP2012DQ-LF-P has FB–GND–SW–PVIN–VIN–EN pin order, while MP2152DJ-LF-Z uses FB–GND–SW–VIN–EN–PVIN. Swapping PVIN and VIN pins creates functional failure and potential damage due to incorrect power routing.
Does MP2012DQ-LF-P require external compensation components?
No. The MP2012DQ-LF-P features fully internal compensation for its peak current-mode control loop. No external Type-II or Type-III compensation network is needed-only the FB resistor divider, input/output capacitors, and inductor are required for stable operation with ceramic output capacitors.
What happens during a short-circuit event at the output?
When FB drops below ~0.3V, the MP2012DQ-LF-P enters foldback mode: switching frequency reduces and PFET current limit lowers to ~1.5A, limiting short-circuit power dissipation. Recovery occurs automatically once load is removed and FB rises above 0.8V, restoring normal 1.2MHz operation and 3.0A current limit.
Why does MP2012DQ-LF-P have separate PVIN and VIN pins?
PVIN supplies the high-current PFET driver and power switch, while VIN powers the control logic and gate driver for the NFET. Separating these paths minimizes noise coupling from high di/dt switching currents into sensitive analog circuitry, improving stability and reducing output ripple.
MP2012DQ-LF-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 6-VDFN 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):
- 6V
- Current - Output:
- 1.5A
- Frequency - Switching:
- 1.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-QFN (3x3)
MP2012DQ-LF-P FAQ
1.How can I place an order for MP2012DQ-LF-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2012DQ-LF-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 MP2012DQ-LF-P reliable?
The price and inventory of MP2012DQ-LF-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2012DQ-LF-P is usually 5 days.
3.What payment methods are accepted for MP2012DQ-LF-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2012DQ-LF-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2012DQ-LF-P?
MP2012DQ-LF-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2012DQ-LF-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 MP2012DQ-LF-P?
For technical support, including MP2012DQ-LF-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2012DQ-LF-P requirements.
6.How does Aetrix verify that MP2012DQ-LF-P is sourced from the original manufacturer or authorized distributors?
All MP2012DQ-LF-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 MP2012DQ-LF-P meets industry standards.
7.What is the process for return or replacement of MP2012DQ-LF-P?
All MP2012DQ-LF-P units undergo pre-shipment inspection (PSI). If there is an issue with MP2012DQ-LF-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 MP2012DQ-LF-P part is unused and in its original packaging.
Return procedure for MP2012DQ-LF-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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