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Monolithic Power Systems Inc. MPQ4560DQ-AEC1-LF-Z
- Part No.:
- MPQ4560DQ-AEC1-LF-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
MPQ4560DQ-AEC1-LF-Z.pdf
- Description:
- IC REG BUCK ADJ 2A 10QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,376
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Product details
Overview
MPQ4560DQ-AEC1-LF-Z 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 and industrial high-voltage point-of-load conversion.
For engineers reviewing the MPQ4560DQ-AEC1-LF-Z datasheet, MPQ4560DQ-AEC1-LF-Z pinout, MPQ4560DQ-AEC1-LF-Z application, or MPQ4560DQ-AEC1-LF-Z equivalent, key selection criteria include its AEC-Q100 qualification, 2MHz programmable frequency, 12µA shutdown current, thermal shutdown behavior, and QFN10 (3×3mm) package with exposed thermal pad.
Technical Context
The MPQ4560DQ-AEC1-LF-Z implements peak-current-mode PWM control with a dedicated COMP pin for loop compensation, enabling fast transient response and stable operation with ceramic output capacitors. Its internal error amplifier features 400V/V voltage gain and 120µA/V transconductance, supporting wide-range output adjustment via resistive feedback.
It integrates a programmable oscillator (set by external resistor on FREQ pin), frequency foldback during startup/short-circuit, and bootstrap charging circuitry with UVLO (2.2V rising threshold). The device uses asynchronous rectification and includes dedicated EN pin with 1.55V enable threshold and 320mV hysteresis for reliable sequencing in automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.8V to 55V - supports 12V/24V/48V automotive and industrial bus inputs without pre-regulation. |
| Output Current | Up to 2A continuous - sufficient for powering microcontrollers, sensors, and interface ICs in harsh environments. |
| Switching Frequency | Programmable up to 2MHz - enables compact magnetics and avoids AM radio band interference. |
| Quiescent Current | 140µA - ensures low standby power draw in always-on automotive modules (e.g., body control units). |
| Feedback Reference | 0.797V ±2.5% - sets precise output regulation accuracy over temperature and line conditions. |
| High-Side RDS(on) | 250mΩ typ - reduces conduction loss at 2A, improving efficiency in 5V–12V output configurations. |
| Shutdown Current | 12µA - enables deep-sleep battery preservation in telematics and ADAS subsystems. |
Pinout & Package
MPQ4560DQ-AEC1-LF-Z is housed in a thermally enhanced 3mm × 3mm QFN-10 package with exposed thermal pad (pin 5), optimized for high-power density and automotive thermal cycling reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 (SW) | Switch Node | Drives external Schottky diode; requires low-inductance layout to minimize EMI and voltage spikes. |
| 3 (EN) | Enable Input | Logic-level control with 1.55V rising threshold; internal 1µA pull-up allows floating-enable configuration. |
| 4 (COMP) | Compensation Output | GM error amplifier output; connects to RC network for loop stability tuning per output capacitor ESR. |
| 5 (FB) | Feedback Input | Senses divided output voltage; referenced to 0.797V internal bandgap for accurate regulation. |
| 6 (GND) | Power Ground | Primary return path; exposed pad must be soldered to PCB ground plane for thermal and EMI performance. |
| 7 (FREQ) | Frequency Set | Resistor-to-ground sets fSW; 95kΩ yields ~1MHz, enabling precise EMI management. |
| 8, 9 (VIN) | Input Supply | Accepts full 3.8–55V range; requires local 4.7µF ceramic decoupling adjacent to pins. |
| 10 (BST) | Bootstrap Supply | Charges via external capacitor to SW; enables high-side gate drive above VIN for efficient switching. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 Qualification | Validated for −40°C to +125°C junction operation - meets automotive electronics reliability requirements. |
| Internal Soft-Start | 0.5ms typical ramp time - prevents output overshoot and inrush current during cold cranking or wake-up events. |
| Ceramic Capacitor Stable | No minimum ESR requirement - simplifies output filter design and improves transient response vs. electrolytic solutions. |
| Thermal Shutdown Protection | 150°C trip with 20°C hysteresis - prevents permanent damage during overload or poor heatsinking. |
| Frequency Foldback | Reduces fSW under short-circuit - limits peak switch current and sustains safe operation during fault conditions. |
Applications
| Automotive Body Control Module (BCM) | Industrial 48V DC Distribution |
|---|---|
Use Scenario: Powering microcontroller, CAN transceiver, and door lock actuators from vehicle battery (9–16V) with load dump immunity. IC Role / Device Role / Timing Role: Primary 5V/3.3V step-down regulator with AEC-Q100 compliance and 55V absolute max rating for load dump survival. Use Value: Eliminates need for external TVS or pre-regulator; 140µA IQ extends battery life in parked mode. | Use Scenario: Converting 48V rail to 12V/5V for PLC I/O modules and motor drivers in factory automation systems. IC Role / Device Role / Timing Role: High-efficiency, high-input-voltage buck converter operating at 2MHz to reduce magnetic size and EMI filtering cost. Use Value: 250mΩ RDS(on) and pulse-skipping mode maintain >90% efficiency from 10mA to 2A load. |
| Battery-Powered Telematics Unit | Automotive ADAS Camera Power Supply |
Use Scenario: Supplying 3.3V to GPS/GSM module and MCU in fleet tracking devices powered by 12V lead-acid battery. IC Role / Device Role / Timing Role: Always-on buck regulator with ultra-low 12µA shutdown current and wide VIN range for cold-cranking support. Use Value: Enables multi-year battery operation in sleep mode without external LDO or enable sequencing. | Use Scenario: Generating clean 1.8V/3.3V rails for image sensor and ISP in rear-view or surround-view camera systems. IC Role / Device Role / Timing Role: Low-noise, high-PSRR step-down converter with 2MHz switching to avoid interference with video signal integrity. Use Value: Internal soft-start and current-mode control ensure stable startup under varying camera load profiles. |
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-Z | Successor with improved 1.5A current limit accuracy, lower 100µA IQ, and extended 60V abs max VIN. | Designed for new designs requiring tighter current limit tolerance and higher input surge margin. | Select for new automotive projects; MPQ4560DQ-AEC1-LF-Z is not recommended for new designs per MPS documentation. |
| LM5164QPWPRQ1 | TI part with 1A output, 65V max VIN, and integrated bootstrap diode; no AEC-Q100 Grade 1 rating. | Lower current capability and non-AEC-Q100 qualification limit use to non-safety-critical industrial applications. | Consider only if AEC-Q100 is not required and 1A output suffices; lacks QFN10 thermal performance of MPQ4560. |
Compared with MPQ4560DQ-AEC1-LF-Z, MPQ4572DQ-AEC1-LF-Z offers tighter current limit spec and lower quiescent current for next-gen automotive designs, while LM5164QPWPRQ1 provides higher input voltage margin but lacks AEC-Q100 Grade 1 validation and thermal performance in QFN10.
Availability
MPQ4560DQ-AEC1-LF-Z is available at Aetrix Electronics and suitable for automotive body electronics, industrial 48V power distribution, and battery-powered telematics requiring stable component supply and AEC-Q100 traceability.
Supply support for MPQ4560DQ-AEC1-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 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 high-reliability, high-input-voltage applications in vehicles and industrial equipment where AEC-Q100 compliance and thermal robustness are mandatory.
FAQ
What is the maximum allowable junction temperature for MPQ4560DQ-AEC1-LF-Z?
The maximum junction temperature is +125°C under continuous operation, with thermal shutdown activating at +150°C and hysteresis of 20°C. This Grade 1 AEC-Q100 rating ensures reliable operation in under-hood automotive environments when mounted on a 4-layer PCB with proper thermal pad soldering.
Can MPQ4560DQ-AEC1-LF-Z operate with a 2MHz switching frequency without external components?
No - 2MHz operation requires an external resistor (RFREQ ≈ 95kΩ) from the FREQ pin to GND. The device does not default to 2MHz; frequency scaling is fully programmable and must be set per application EMI and efficiency requirements.
Why does MPQ4560DQ-AEC1-LF-Z require an external Schottky diode?
It is an asynchronous buck converter with only an integrated high-side MOSFET; the external Schottky diode provides the return path for inductor current during the low-side conduction phase. Diode selection must meet ≥55V reverse voltage and ≥2A average current ratings.
Is MPQ4560DQ-AEC1-LF-Z pin-compatible with MPQ4560DN-AEC1-LF-Z?
No - MPQ4560DQ-AEC1-LF-Z uses QFN10 (3×3mm) packaging with 10 pins and exposed thermal pad, while MPQ4560DN-AEC1-LF-Z uses SOIC8E (8-pin) packaging. Pin functions differ in count and layout; PCB redesign is required for substitution.
Does MPQ4560DQ-AEC1-LF-Z support output voltages below 1V?
No - the internal feedback reference is 0.797V, and the datasheet specifies a minimum output of 0.8V. Attempting sub-0.8V regulation violates guaranteed specifications and may result in unstable or inaccurate output due to reference tolerance and FB pin leakage effects.
How does frequency foldback improve reliability during startup?
During startup or short-circuit, frequency foldback reduces switching frequency to limit peak inductor current and prevent runaway. This lowers stress on the internal MOSFET and external diode, avoiding thermal runaway and enabling safe recovery without latch-off.
What is the purpose of the BST pin, and what capacitor value is recommended?
The BST pin supplies gate drive voltage to the internal high-side MOSFET via a bootstrap capacitor tied between BST and SW. A 0.1µF X7R ceramic capacitor is recommended, placed as close as possible to the BST and SW pins to minimize loop inductance and ensure reliable turn-on.
MPQ4560DQ-AEC1-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:
- 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-Z FAQ
1.How can I place an order for MPQ4560DQ-AEC1-LF-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4560DQ-AEC1-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 MPQ4560DQ-AEC1-LF-Z reliable?
The price and inventory of MPQ4560DQ-AEC1-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 MPQ4560DQ-AEC1-LF-Z is usually 5 days.
3.What payment methods are accepted for MPQ4560DQ-AEC1-LF-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4560DQ-AEC1-LF-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4560DQ-AEC1-LF-Z?
MPQ4560DQ-AEC1-LF-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4560DQ-AEC1-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 MPQ4560DQ-AEC1-LF-Z?
For technical support, including MPQ4560DQ-AEC1-LF-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4560DQ-AEC1-LF-Z requirements.
6.How does Aetrix verify that MPQ4560DQ-AEC1-LF-Z is sourced from the original manufacturer or authorized distributors?
All MPQ4560DQ-AEC1-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 MPQ4560DQ-AEC1-LF-Z meets industry standards.
7.What is the process for return or replacement of MPQ4560DQ-AEC1-LF-Z?
All MPQ4560DQ-AEC1-LF-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4560DQ-AEC1-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 MPQ4560DQ-AEC1-LF-Z part is unused and in its original packaging.
Return procedure for MPQ4560DQ-AEC1-LF-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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