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Monolithic Power Systems Inc. MPQ4415AGQB-P
- Part No.:
- MPQ4415AGQB-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 13-PowerVQFN
- Datasheet:
-
MPQ4415AGQB-P.pdf
- Description:
- IC REG BUCK ADJ 1.5A 13QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,882
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Product details
Overview
MPQ4415AGQB-P from Monolithic Power Systems is a 36V, 1.5A, 2.2MHz synchronous step-down converter with AEC-Q100 Grade 1 qualification, integrated 90mΩ/50mΩ MOSFETs, and power-good indicator - designed for automotive power rails requiring high efficiency, compact footprint, and robust fault protection in 4V–36V input systems.
For engineers reviewing the MPQ4415AGQB-P datasheet, MPQ4415AGQB-P pinout, MPQ4415AGQB-P application, or MPQ4415AGQB-P equivalent, key selection criteria include its forced CCM operation across load range, 450kHz–2.2MHz frequency synchronization capability, valley-current OCP with hiccup mode, CISPR25 Class 5 compliance, and wettable flank QFN-13 package for automated optical inspection.
Technical Context
The MPQ4415AGQB-P employs peak-current-mode control with internal 0.807V reference and optimized compensation network, enabling stable regulation without external loop components. Its fixed-frequency architecture supports precise timing control and EMI management via external sync input on EN/SYNC pin.
It integrates dual MOSFET drivers with bootstrap charging circuitry (VBST = VSW + ~5V), internal 4.9V VCC regulator, and independent AGND/PGND separation to minimize noise coupling. Thermal shutdown triggers at 170°C with 30°C hysteresis, and UVLO activates at 3.5V rising threshold with 330mV hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 36V - supports wide automotive battery transients including cold-crank (4.5V) and load-dump (36V) |
| Output Current | 1.5A continuous - sufficient for powering microcontrollers, sensors, and CAN transceivers in distributed ECUs |
| Switching Frequency | Default 2.2MHz, adjustable 450kHz–2.2MHz - enables use of small 2.2µH inductors and avoids AM radio band |
| Feedback Voltage | 0.807V ±13mV - sets output voltage via resistor divider; enables 0.8V minimum VOUT with tight regulation |
| Internal MOSFET RDS(ON) | 90mΩ (HS) / 50mΩ (LS) - reduces conduction loss and thermal stress at full load in QFN-13 package |
| Protection Features | OCP (valley & peak), thermal shutdown, PG indicator, UVLO - ensures safe operation during short-circuit, overtemperature, and undervoltage events |
| Package | QFN-13 (2.5mm × 3mm) with wettable flanks - supports AOI inspection and improves solder joint reliability in automotive reflow |
Pinout & Package
MPQ4415AGQB-P is housed in a thermally enhanced, lead-free, wettable flank QFN-13 package (2.5mm × 3mm, 0.5mm pitch), with exposed thermal pad connected internally to PGND for efficient heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 IN | Main power input | Accepts 4V–36V supply; requires low-ESR ceramic capacitor placed adjacent to pins with wide copper pours |
| 3 NC | No connection | Must remain unconnected; no internal bond or function |
| 4 PG | Power-good open-drain output | Asserts high when VOUT ≥ 88% × VREF (after 90μs delay); pulled low during fault or disable |
| 5 EN/SYNC | Enable & frequency sync input | Logic-high enables IC; external 450kHz–2.2MHz clock synchronizes switching edge |
| 6 FB | Feedback node | Connects to resistor divider tap; internal 807mV reference enables precise VOUT programming |
| 7 VCC | Internal bias supply | Internally regulated 4.9V rail; requires 0.1µF–0.22µF ceramic decoupling capacitor |
| 8 AGND | Analog ground reference | Reference for error amplifier and logic; internally tied to PGND - no external connection needed |
| 9 SW | Switch node | Drives external inductor; high di/dt path requiring short, wide PCB trace and ground stitching vias |
| 10 BST | Bootstrap supply | Connects to SW via 0.1µF capacitor and 20Ω series resistor to power high-side gate driver |
| 11–13 PGND | Power ground | High-current return path for MOSFETs and inductor; must be solid copper pour with multiple thermal vias |
Key Features
| Feature | Design Value |
|---|---|
| Forced Continuous Conduction Mode (CCM) | Maintains fixed 2.2MHz switching across 0–100% load - eliminates audible noise and simplifies EMI filtering |
| Internal Soft Start | 1.5ms typical ramp time - prevents output overshoot and inrush current during startup |
| CISPR25 Class 5 Compliance | Validated for automotive EMC requirements - reduces need for external filters in infotainment and ADAS subsystems |
| AEC-Q100 Grade 1 Qualification | Rated for −40°C to +125°C junction temperature - suitable for under-hood and body-control module applications |
| Valley-Current OCP with Hiccup | Detects low-side current collapse during overload; enters periodic restart to limit average power and thermal stress |
Applications
| Automotive Body Control Module | Industrial PLC I/O Power |
|---|---|
Use Scenario: Powering MCU, CAN transceiver, and sensor interface in door module or lighting ECU. IC Role / Device Role / Timing Role: Primary 3.3V/5V buck regulator supplying digital logic and communication peripherals. Use Value: AEC-Q100 qualification and 36V input withstand ensure reliable operation during load dump; PG signal enables system-level power sequencing. | Use Scenario: Generating isolated 5V rail for analog input conditioning and digital isolation in modular I/O cards. IC Role / Device Role / Timing Role: Non-isolated intermediate DC-DC stage converting 24V field bus to clean 5V logic supply. Use Value: 2.2MHz operation allows miniature 2.2µH inductor; wettable flank package supports IPC-A-610-compliant automated assembly. |
| Medical Patient Monitor Display | Telecom Remote Radio Unit |
Use Scenario: Supplying 3.3V to LCD controller and touch interface in portable diagnostic equipment. IC Role / Device Role / Timing Role: Compact, low-noise point-of-load regulator minimizing conducted EMI into sensitive analog front-end. Use Value: CISPR25 Class 5 compliance eliminates need for additional EMI filter stages; internal compensation reduces BOM count. | Use Scenario: Providing 1.2V core voltage to FPGA or DSP in outdoor base station remote radio head. IC Role / Device Role / Timing Role: High-efficiency, thermally robust buck converter operating in extended ambient temperature range. Use Value: 90mΩ/50mΩ MOSFETs and QFN thermal pad enable >90% efficiency at 1.5A; frequency sync allows co-location with other switching regulators. |
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 |
|---|---|---|---|
| MPQ4415AGQBE-AEC1 | Wettable flank variant with identical electrical specs and AEC-Q100 Grade 1 rating | Same functional use; optimized for automated optical inspection in high-reliability automotive production | Select when AOI capability or enhanced solder joint inspection is required in manufacturing |
| LM61480QRNXTQ1 | TI part: 3.5V–36V input, 8A output, 2.1MHz, but larger HTSSOP-16 package and higher quiescent current (15µA vs. 0.8mA) | Higher current capacity; less suitable for space-constrained 1.5A nodes due to size and thermal design complexity | Choose only if future scalability to >2A is needed; otherwise MPQ4415AGQB-P offers better density and lower IQ |
Compared with MPQ4415AGQBE-AEC1, the MPQ4415AGQB-P shares identical performance but lacks wettable flanks - making it appropriate for standard SMT lines without AOI. Versus LM61480QRNXTQ1, it delivers equivalent 2.2MHz operation and automotive qualification in half the footprint and lower static power, ideal for compact 1.5A point-of-load designs.
Availability
MPQ4415AGQB-P is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, medical display subsystems, and telecom remote radio units requiring stable component supply, AEC-Q100 compliance, and high-frequency DC-DC conversion.
Supply support for MPQ4415AGQB-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 distribution through authorized partners.
The MPQ4415A product line targets automotive and industrial DC-DC conversion where small size, high efficiency, and AEC-Q100 reliability are mandatory - delivering integrated power solutions that reduce external component count and simplify layout.
FAQ
What is the purpose of the BST pin and how should it be configured?
The BST (bootstrap) pin supplies gate drive voltage to the high-side MOSFET. It requires a 0.1µF ceramic capacitor connected between BST and SW, with a 20Ω series resistor recommended to suppress SW node ringing. During low-side conduction, VIN charges the BST capacitor through an internal PMOS; insufficient headroom (VIN – VOUT < 2.5V) may cause bootstrap under-voltage and cycle skipping.
Does MPQ4415AGQB-P support output voltages below 0.8V?
No - the internal feedback reference is fixed at 0.807V, and the datasheet specifies output adjustability "from 0.8V". Attempting sub-0.8V operation violates the FB comparator's valid input range and results in regulation failure or unstable behavior; for lower outputs, a different converter with adjustable reference or external error amplifier is required.
How does the EN/SYNC pin function in synchronization mode?
When an external clock (450kHz–2.2MHz) is applied to EN/SYNC, the MPQ4415AGQB-P locks its internal oscillator to the rising edge of that signal. The external clock must have ≤350ns pulse width and ≥1.9µs off-time. No pull-up resistor is needed in sync mode, but EN/SYNC must remain within absolute max ratings (−0.3V to 6V) to avoid Zener clamp damage.
What is the role of the NC pin (Pin 3), and can it be grounded?
Pin 3 is a true no-connect terminal - not bonded internally and electrically floating. It must remain unconnected per datasheet guidance. Grounding or routing to any net risks unintended parasitic coupling, potential latch-up, or violation of package thermal design; leaving it unpopulated ensures guaranteed functionality and qualification integrity.
Is the PG signal active-high or active-low, and what conditions assert it?
PG is an open-drain output that is actively pulled low during startup, fault conditions (OCP, thermal shutdown, EN low), or when VFB falls below 83% of VREF. It transitions high only after VFB exceeds 88% of VREF and remains high while regulation is stable - requiring an external pull-up resistor (e.g., 100kΩ to VCC) to generate a logic-high signal for system monitoring.
Can MPQ4415AGQB-P operate in discontinuous conduction mode (DCM)?
No - the device enforces forced continuous conduction mode (CCM) across the entire load range, including light loads. This eliminates mode transitions, maintains constant 2.2MHz switching, minimizes output ripple, and avoids audible noise. DCM is not supported; valley-current detection and hiccup protection operate within CCM framework during overload.
What is the maximum allowable input voltage transient the device can withstand?
The absolute maximum input voltage rating is 40V, and the device is qualified to AEC-Q100 Grade 1 (−40°C to +125°C TJ). It reliably handles automotive load-dump transients up to 36V per ISO 7637-2 Pulse 5a, provided input capacitance and PCB layout meet recommended guidelines - including low-ESR ceramic input caps placed directly at IN/PGND pins.
MPQ4415AGQB-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MPQ
- Package/Case:
- 13-PowerVQFN
- 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):
- 4V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 30.6V
- Current - Output:
- 1.5A
- Frequency - Switching:
- 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 13-QFN (2.5x3)
MPQ4415AGQB-P FAQ
1.How can I place an order for MPQ4415AGQB-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4415AGQB-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 MPQ4415AGQB-P reliable?
The price and inventory of MPQ4415AGQB-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ4415AGQB-P is usually 5 days.
3.What payment methods are accepted for MPQ4415AGQB-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4415AGQB-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4415AGQB-P?
MPQ4415AGQB-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4415AGQB-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 MPQ4415AGQB-P?
For technical support, including MPQ4415AGQB-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4415AGQB-P requirements.
6.How does Aetrix verify that MPQ4415AGQB-P is sourced from the original manufacturer or authorized distributors?
All MPQ4415AGQB-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 MPQ4415AGQB-P meets industry standards.
7.What is the process for return or replacement of MPQ4415AGQB-P?
All MPQ4415AGQB-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4415AGQB-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 MPQ4415AGQB-P part is unused and in its original packaging.
Return procedure for MPQ4415AGQB-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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