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Monolithic Power Systems Inc. MP2012DQ-LF-Z
- Part No.:
- MP2012DQ-LF-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 6-VDFN Exposed Pad
- Datasheet:
-
MP2012DQ-LF-Z.pdf
- Description:
- IC REG BUCK ADJ 1.5A 6QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,215
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Product details
Overview
MP2012DQ-LF-Z from Monolithic Power Systems is a synchronous step-down DC-DC converter optimized for single-cell Li-ion battery-powered portable electronics. It operates from 2.7V to 6V input, delivers up to 1.5A load current, regulates output down to 0.8V, features 1.2MHz fixed-frequency PWM control, and supports 100% duty cycle for low-dropout operation - used in smart phones and digital cameras.
For engineers reviewing the MP2012DQ-LF-Z datasheet, MP2012DQ-LF-Z pinout, MP2012DQ-LF-Z application, or MP2012DQ-LF-Z equivalent, key selection criteria include input voltage range (2.7–6V), output current capability (1.5A), thermal shutdown threshold (150°C), FB regulation accuracy (±24mV at 25°C), and QFN6 (3×3mm) package compatibility with ceramic output capacitors.
Technical Context
The MP2012DQ-LF-Z implements peak-current-mode PWM control with internal slope compensation, enabling stable operation across >50% duty cycles and eliminating subharmonic oscillation. Its integrated high-side PFET (0.25Ω typ.) and low-side NFET (0.2Ω typ.) support synchronous rectification without external diodes.
It operates exclusively in continuous conduction mode (CCM), uses an internal 0.8V reference for feedback regulation, and includes cycle-by-cycle overcurrent protection triggered when inductor peak current exceeds 3.0A (typ.) - independent of input voltage or duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 6V - supports full discharge curve of single Li-ion cell (3.0–4.2V nominal, down to 2.7V cutoff). |
| Output Current | 1.5A max - sufficient for core logic rails in smartphones and camera image processors. |
| Switching Frequency | 1.2MHz (±0.2MHz) - enables use of compact 2.2–3.3μH inductors and reduces EMI filtering requirements. |
| Feedback Voltage | 0.784V to 0.824V (–40°C to +85°C) - sets output accuracy to ±2.5% over temperature for stable 1.8V/2.5V rails. |
| Shutdown Current | 1μA max - preserves battery life during system sleep modes in portable instruments. |
| Thermal Shutdown | 150°C trip with 20°C hysteresis - prevents permanent damage during sustained 1.5A loads in confined PCB layouts. |
| Efficiency | Up to 95% at 1.5A/1.8V out from 5V in - minimizes power loss and thermal rise in space-constrained enclosures. |
Pinout & Package
MP2012DQ-LF-Z is housed in a thermally enhanced QFN6 package (3mm × 3mm, 0.75mm height) with exposed pad soldered to PCB ground plane for optimal thermal dissipation (θJA = 50°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 FB | Feedback input | Connects to resistor divider tap; regulates output by comparing divided VOUT to internal 0.8V reference. |
| 2 GND | Ground / Exposed Pad | Main power and signal return; exposed pad must be soldered to ≥100mm² copper pour for thermal reliability. |
| 3 SW | Switch node | Drives external inductor; carries high di/dt switching current - requires short, wide trace routing. |
| 4 PVIN | Power FET supply | Bypasses high-current path to internal PFET; decoupled separately from VIN to reduce noise coupling. |
| 5 VIN | Controller supply | Powers internal logic and gate drivers; requires local 10μF X5R/X7R ceramic capacitor. |
| 6 EN | Enable input | Active-high logic control; internal 1MΩ pull-down ensures default disable on power-up. |
Key Features
| Feature | Design Value |
|---|---|
| 100% Duty Cycle Operation | Enables dropout-free regulation when VIN approaches VOUT, critical for battery end-of-discharge in PDAs. |
| Ceramic-Capacitor Stability | No external compensation required - supports low-ESR ceramic output caps (e.g., 22μF X5R) for compact, low-noise designs. |
| Cycle-by-Cycle Current Limit | Hardware-based overcurrent protection triggers per-switching-cycle at 3.0A (typ.), preventing MOSFET failure during load transients. |
| Integrated PFET/NFET Power Stage | Eliminates need for external synchronous rectifier; reduces BOM count and layout complexity in space-constrained mobile PCBs. |
| Short-Circuit Foldback | Reduces switching frequency and peak current during output shorts, limiting power dissipation to safe levels until fault clears. |
Applications
| Smart Phones | Digital Cameras |
|---|---|
Use Scenario: Core SoC I/O rail (1.8V/1.5A) powered from single Li-ion cell. IC Role / Device Role / Timing Role: Primary buck regulator delivering stable, low-noise power to application processor interfaces. Use Value: 95% efficiency at 1.5A minimizes heat generation inside sealed handset enclosures; 1.2MHz switching avoids AM radio band interference. | Use Scenario: Image sensor analog supply (2.5V/1.2A) requiring low ripple and fast transient response. IC Role / Device Role / Timing Role: High-efficiency point-of-load converter with tight line/load regulation (±0.6%) for pixel clock stability. Use Value: 0.8V FB reference tolerance (±24mV) ensures accurate 2.5V output; CCM operation eliminates random noise that degrades image SNR. |
| PDAs | Portable Instruments |
Use Scenario: LCD bias and memory interface rail (3.3V/1.0A) operating across full battery voltage range (4.2V → 2.7V). IC Role / Device Role / Timing Role: Adaptive buck converter maintaining regulation through 100% duty cycle during battery sag. Use Value: Dropout operation sustains 3.3V output down to 3.5V input, extending usable runtime by ~12% versus non-100% duty cycle alternatives. | Use Scenario: Precision ADC/DAC analog supply (1.2V/0.8A) in handheld test equipment. IC Role / Device Role / Timing Role: Low-noise, thermally robust power source with <20mVpp output ripple under dynamic load. Use Value: Ceramic-capacitor stability and 1.2MHz fixed frequency enable predictable EMI filtering; thermal shutdown protects against enclosure overheating during extended measurements. |
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 current, 2.2MHz switching, improved light-load efficiency via PFM mode. | Supports higher-power SoCs and faster transient response; not pin-compatible due to different pinout and EN polarity. | Select when upgrading from MP2012DQ-LF-Z for increased current headroom or tighter size constraints. |
| TPS62231DRYR | 1.8MHz switching, 0.6V FB reference, 1.8A output, but lacks 100% duty cycle and has higher quiescent current (12μA). | Suitable for mid-range portable devices where dropout is less critical; requires redesign of feedback network and layout. | Choose if prioritizing higher switching frequency for smaller magnetics, accepting trade-off in dropout capability and shutdown current. |
Compared with MP2012DQ-LF-Z, MP2152DJ-LF-Z offers higher current and frequency but requires board rework, while TPS62231DRYR provides higher frequency and lower FB voltage at the cost of dropout operation and higher static power - making MP2012DQ-LF-Z optimal for legacy Li-ion systems needing proven 100% duty cycle behavior.
Availability
MP2012DQ-LF-Z is available at Aetrix Electronics and suitable for smart phone power management, digital camera SoC rails, and portable instrument analog supplies requiring stable component supply across industrial temperature ranges (–40°C to +85°C).
Supply support for MP2012DQ-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 mixed-signal ICs for power management, motor drive, and automotive applications.
The MP2012 belongs to MPS's low-voltage DC-DC converter product line, designed specifically for space- and efficiency-critical portable electronics powered by single-cell Li-ion batteries.
FAQ
What is the maximum recommended output current for MP2012DQ-LF-Z at 85°C ambient temperature?
The MP2012DQ-LF-Z supports up to 1.5A output current at TA = +25°C with adequate PCB copper area. At +85°C ambient, thermal limits reduce practical continuous current to approximately 1.1A - calculated using θJA = 50°C/W, TJ(max) = 150°C, and PD(max) = (150 – 85)/50 = 1.3W, accounting for typical 0.25Ω PFET RDS(on) and conduction losses.
Can MP2012DQ-LF-Z operate with only ceramic capacitors on input and output?
Yes - MP2012DQ-LF-Z is internally compensated and stable with low-ESR ceramic capacitors. Recommended values are 10μF X5R/X7R for CIN (placed near VIN/PVIN pins) and 22μF X5R/X7R for COUT; no tantalum or electrolytic capacitors are required for loop stability or EMI suppression.
Does MP2012DQ-LF-Z support forced PWM mode or automatic PFM/PWM transition?
No - MP2012DQ-LF-Z operates exclusively in forced PWM mode across all load conditions. It does not enter pulse-frequency modulation (PFM) at light loads; this ensures constant 1.2MHz switching frequency for predictable EMI and eliminates low-frequency output voltage ripple associated with mode transitions.
What is the purpose of separate PVIN and VIN pins on MP2012DQ-LF-Z?
PVIN supplies the high-current power FET driver stage, while VIN powers the control logic and gate drivers. Separating these paths minimizes noise coupling from switching currents into sensitive analog circuitry, improving regulation accuracy and reducing susceptibility to input ripple - especially critical in battery-powered systems with limited input filtering.
How does the 100% duty cycle feature function during input voltage droop?
When VIN drops near VOUT, the controller extends the main switch ON time beyond one oscillator period until duty cycle reaches 100%. The PFET remains continuously on, delivering current through its RDS(on) (0.25Ω typ.), resulting in VOUT ≈ VIN – ILOAD × RDS(on) - enabling uninterrupted operation down to 2.7V input for 1.8V outputs.
Is MP2012DQ-LF-Z RoHS compliant and halogen-free?
Yes - the "-LF" suffix in MP2012DQ-LF-Z indicates lead-free and RoHS-compliant packaging per EU Directive 2011/65/EU. The device meets MPS's green status requirements, including halogen-free materials (Br < 900 ppm, Cl < 900 ppm, total halogens < 1500 ppm) and exemption compliance under Annex III.
MP2012DQ-LF-Z 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-Z FAQ
1.How can I place an order for MP2012DQ-LF-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2012DQ-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 MP2012DQ-LF-Z reliable?
The price and inventory of MP2012DQ-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 MP2012DQ-LF-Z is usually 5 days.
3.What payment methods are accepted for MP2012DQ-LF-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2012DQ-LF-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2012DQ-LF-Z?
MP2012DQ-LF-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2012DQ-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 MP2012DQ-LF-Z?
For technical support, including MP2012DQ-LF-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2012DQ-LF-Z requirements.
6.How does Aetrix verify that MP2012DQ-LF-Z is sourced from the original manufacturer or authorized distributors?
All MP2012DQ-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 MP2012DQ-LF-Z meets industry standards.
7.What is the process for return or replacement of MP2012DQ-LF-Z?
All MP2012DQ-LF-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP2012DQ-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 MP2012DQ-LF-Z part is unused and in its original packaging.
Return procedure for MP2012DQ-LF-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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