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Monolithic Power Systems Inc. MPQ4560DQ-AEC1-LF-P
- Part No.:
- MPQ4560DQ-AEC1-LF-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
MPQ4560DQ-AEC1-LF-P.pdf
- Description:
- IC REG BUCK ADJ 2A 10QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,039
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Product details
Overview
MPQ4560DQ-AEC1-LF-P from Monolithic Power Systems is an AEC-Q100 qualified, asynchronous step-down DC/DC converter with integrated 250mΩ high-side MOSFET, delivering up to 2A output current across a 3.8V–55V input range and adjustable 0.8V–52V output. It operates at up to 2MHz switching frequency with current-mode control, 140μA quiescent current, and internal soft-start-designed for automotive power rails, industrial HVDC systems, and battery-powered equipment requiring robust thermal shutdown and frequency foldback protection.
For engineers reviewing the MPQ4560DQ-AEC1-LF-P datasheet, MPQ4560DQ-AEC1-LF-P pinout, MPQ4560DQ-AEC1-LF-P application, or MPQ4560DQ-AEC1-LF-P equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, 2MHz programmability via external resistor, 12µA shutdown current, ceramic-capacitor stability, and QFN10 (3×3mm) package with exposed thermal pad-critical for high-density automotive and industrial power designs.
Technical Context
The MPQ4560DQ-AEC1-LF-P implements peak-current-mode PWM control with internal error amplifier (400 V/V gain, 120 µA/V transconductance), programmable oscillator (RFREQ-based, 0.7–1.3 MHz typical), and cycle-by-cycle current limiting (2.6–4.5 A). Its bootstrap driver charges via VIN–SW path with UVLO (2.2 V, 150 mV hysteresis) and supports high-duty-cycle operation only with external diode assistance when VOUT/VIN > 65%.
It features under-voltage lockout (3.0 V rising, 2.6 V falling), thermal shutdown (150 °C trip, 20 °C hysteresis), and pulse-skipping mode below ~200 mA load to reduce gate-driving and switching losses-enabling >95% efficiency at mid-load while maintaining stable regulation across –40°C to +125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.8 V to 55 V - supports wide automotive battery transients (e.g., cold-crank, load-dump) and industrial HVDC inputs |
| Output Current | Up to 2 A continuous - limited by internal MOSFET RDS(ON) = 250 mΩ and thermal design in QFN10 package |
| Switching Frequency | Programmable up to 2 MHz - enables compact magnetics and avoids AM radio band interference |
| Quiescent Current | 140 µA - sustains low-power standby in always-on automotive modules (e.g., telematics, ADAS sensors) |
| Feedback Reference | 0.797 V ±23 mV - sets output accuracy; enables 0.8 V–52 V adjustment via external resistor divider |
| Shutdown Current | 12 µA - minimizes battery drain during system sleep modes |
| Thermal Shutdown | 150 °C with 20 °C hysteresis - prevents permanent damage during overload or poor PCB heatsinking |
Pinout & Package
MPQ4560DQ-AEC1-LF-P uses a thermally enhanced 3 mm × 3 mm QFN-10 package with exposed thermal pad (Pin 6), optimized for automotive and industrial PCBs requiring high power density and efficient heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 (SW) | Switch Node | High dv/dt node connecting internal MOSFET drain to external Schottky diode; requires tight layout to minimize EMI and ringing |
| 3 (EN) | Enable Input | Logic-level control (1.55 V threshold); internal 1 µA pull-up allows floating-enable; <1.2 V forces shutdown |
| 4 (COMP) | Error Amplifier Output | Drives external RC compensation network; clamped between 0.9 V and 2.0 V; critical for loop stability |
| 5 (FB) | Feedback Input | Senses resistive divider output; compares to 0.797 V reference to regulate VOUT; leakage <1 µA preserves accuracy |
| 6 (GND / Exposed Pad) | Power & Signal Ground | Primary return path for switch current and IC bias; exposed pad must be soldered to solid GND plane for thermal and EMI performance |
| 7 (FREQ) | Frequency Programming | Connects external resistor to GND; sets fSW from 0.7–1.3 MHz (typical); 95 kΩ yields ~1 MHz |
| 8, 9 (VIN) | Input Supply | Accepts full 3.8–55 V range; requires local 4.7 µF ceramic decoupling close to pins to suppress switching noise |
| 10 (BST) | Bootstrap Supply | Charges internal high-side driver via external capacitor to SW; requires ≥5 V headroom for reliable gate drive |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 Qualification | Validated for automotive applications operating from –40°C to +125°C junction temperature |
| Integrated 250 mΩ High-Side MOSFET | Eliminates external switch and reduces BOM count; enables compact 2A solution without discrete FET layout complexity |
| Ceramic-Capacitor Stability | Stable with low-ESR MLCCs across full load range-no need for tantalum or polymer capacitors |
| Internal Soft-Start (0.5 ms) | Prevents output overshoot and inrush current during startup and short-circuit recovery |
| Frequency Foldback Protection | Reduces switching frequency and current limit during output short-circuit to limit power dissipation and thermal stress |
Applications
| Automotive Infotainment Power | Industrial HVDC Distribution |
|---|---|
Use Scenario: Powers 3.3 V or 5 V logic rails in head units, digital clusters, and rear-seat entertainment systems exposed to 12 V/24 V battery variations and load-dump transients. IC Role / Device Role / Timing Role: Primary step-down regulator converting unregulated automotive battery voltage to stable low-voltage domain supplies. Use Value: AEC-Q100 qualification ensures reliability over vehicle lifetime; 55 V max input withstands 80 V load-dump spikes per ISO 7637-2; 140 µA IQ extends battery backup time. | Use Scenario: Supplies 12 V or 15 V intermediate bus in factory automation controllers, PLC I/O modules, and motor drives powered from 48 V DC distribution networks. IC Role / Device Role / Timing Role: High-efficiency point-of-load converter stepping down industrial HVDC to isolated or non-isolated sub-system rails. Use Value: 2A capability supports multi-rail SoC/FPGA subsystems; 2MHz operation allows <10 µH inductors, reducing board area and cost vs. lower-frequency alternatives. |
| Battery-Powered Telematics | Distributed Power Architecture |
Use Scenario: Powers GPS/GNSS receivers, cellular modems, and CAN transceivers in fleet-tracking devices operating on 12 V lead-acid or LiFePO₄ batteries with deep-sleep requirements. IC Role / Device Role / Timing Role: Always-on buck regulator enabling ultra-low-power wake-on-event functionality with fast transient response. Use Value: 12 µA shutdown current minimizes self-discharge; internal soft-start prevents false wake-ups from output voltage glitches during cold start. | Use Scenario: Provides localized 5 V or 3.3 V supply to sensor nodes, wireless transceivers, and microcontrollers in distributed IoT edge devices powered from centralized 24–48 V backplanes. IC Role / Device Role / Timing Role: Compact, thermally robust POL regulator minimizing interconnect losses and improving system efficiency over long cable runs. Use Value: QFN10 package with exposed pad enables direct thermal coupling to metal-core PCBs; 3.8 V min input supports brown-out operation during partial battery discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4572DQ-AEC1-LF-P | Successor with improved 1.5 A current limit accuracy (±6% vs. ±15%), lower 100 µA IQ, and extended 60 V abs max VIN rating | Recommended for new designs requiring tighter output tolerance and higher input surge immunity | Select MPQ4572 where long-term supply continuity and tighter regulation are required; MPQ4560 remains viable for legacy repair or cost-sensitive AEC-Q100 builds |
| LM61480QRVJTQ1 | Texas Instruments AEC-Q100 buck with 3.5 A rating, 2.1 MHz max fSW, and integrated boot diode-no external BST cap needed | Offers higher current and simplified layout but requires larger SO-POWERPAD package and different compensation | Choose LM61480 for designs needing >2 A or eliminating external bootstrap components; MPQ4560 retains advantage in footprint and cost for ≤2 A loads |
Compared with MPQ4572DQ-AEC1-LF-P and LM61480QRVJTQ1, MPQ4560DQ-AEC1-LF-P provides proven AEC-Q100 reliability in a smaller QFN10 footprint and lower unit cost, though it lacks the tighter current limit spec and integrated bootstrap diode of its successors-making it suitable for cost-constrained, volume automotive repairs or industrial retrofits where 2A capability and 55V input suffice.
Availability
MPQ4560DQ-AEC1-LF-P is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial HVDC distribution, and battery-powered telematics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MPQ4560DQ-AEC1-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 power ICs, with core expertise in DC/DC conversion, motor drivers, and LED lighting controllers.
The MPQ4560 belongs to MPS's automotive-grade buck converter product line, engineered specifically for harsh-environment power conversion in vehicles and industrial equipment-emphasizing wide VIN range, AEC-Q100 compliance, and thermal resilience over consumer-grade alternatives.
FAQ
Is MPQ4560DQ-AEC1-LF-P recommended for new designs?
No. Monolithic Power Systems explicitly states "NOT RECOMMENDED FOR NEW DESIGNS, REFER TO MPQ4572" in the datasheet. MPQ4560 remains qualified and supported for existing designs, repairs, and legacy production-but MPQ4572 offers improved specifications including tighter current limit accuracy, lower quiescent current, and extended absolute maximum input voltage rating.
What is the function of the FREQ pin, and how is switching frequency set?
The FREQ pin accepts an external resistor (RFREQ) tied to GND to program the oscillator frequency from 0.7 MHz to 1.3 MHz (typical). For example, a 95 kΩ resistor sets ~1 MHz operation. The relationship is approximated by RFREQ (kΩ) = 100,000 / fSW (kHz); precise values require referencing the datasheet's characteristic curves due to temperature and process variation.
Can MPQ4560DQ-AEC1-LF-P operate with a 3.3 V input?
No. The minimum operating input voltage is 3.8 V per the Recommended Operating Conditions table. Attempting operation below this threshold risks failure to start or erratic regulation due to internal UVLO (rising threshold = 3.0 V, but functional regulation begins above 3.8 V).
Why does the datasheet specify two different current limit values (2.6–4.5 A and 2.2–4.7 A)?
The 2.6–4.5 A range applies at TJ = 25°C; the wider 2.2–4.7 A range covers operation across –40°C to +125°C junction temperature. This reflects parametric drift over temperature-designers must use the worst-case min/max values for safety-critical applications like automotive systems.
What is the purpose of the BST pin, and what capacitor value is recommended?
The BST pin supplies the floating gate driver for the internal high-side MOSFET. A 0.1 µF X7R ceramic capacitor is recommended between BST and SW pins. This capacitor must be placed adjacent to the IC with short, low-inductance traces to ensure reliable bootstrap charging-especially critical at 2 MHz operation where charge time is constrained.
Does MPQ4560DQ-AEC1-LF-P support synchronous rectification?
No. MPQ4560 is an asynchronous buck converter and requires an external Schottky diode (e.g., B290-13-F or CMSH2-100M) connected from SW to GND. It does not integrate a low-side MOSFET or provide gate drive signals for synchronous operation.
How is thermal performance affected by the QFN10 package's exposed pad?
The exposed thermal pad (Pin 6) is electrically GND and thermally critical: soldering it to a large, multilayer PCB GND plane reduces θJA from 50°C/W to ~35°C/W in typical layouts. Omitting pad connection degrades thermal resistance by >40%, risking premature thermal shutdown at full 2A load in ambient temperatures above 60°C.
MPQ4560DQ-AEC1-LF-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 10-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):
- 3.8V
- Voltage - Input (Max):
- 55V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 52V
- Current - Output:
- 2A
- Frequency - Switching:
- Up to 2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-QFN (3x3)
MPQ4560DQ-AEC1-LF-P FAQ
1.How can I place an order for MPQ4560DQ-AEC1-LF-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4560DQ-AEC1-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 MPQ4560DQ-AEC1-LF-P reliable?
The price and inventory of MPQ4560DQ-AEC1-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 MPQ4560DQ-AEC1-LF-P is usually 5 days.
3.What payment methods are accepted for MPQ4560DQ-AEC1-LF-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4560DQ-AEC1-LF-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4560DQ-AEC1-LF-P?
MPQ4560DQ-AEC1-LF-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4560DQ-AEC1-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 MPQ4560DQ-AEC1-LF-P?
For technical support, including MPQ4560DQ-AEC1-LF-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4560DQ-AEC1-LF-P requirements.
6.How does Aetrix verify that MPQ4560DQ-AEC1-LF-P is sourced from the original manufacturer or authorized distributors?
All MPQ4560DQ-AEC1-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 MPQ4560DQ-AEC1-LF-P meets industry standards.
7.What is the process for return or replacement of MPQ4560DQ-AEC1-LF-P?
All MPQ4560DQ-AEC1-LF-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4560DQ-AEC1-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 MPQ4560DQ-AEC1-LF-P part is unused and in its original packaging.
Return procedure for MPQ4560DQ-AEC1-LF-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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