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Monolithic Power Systems Inc. MPQ4475MGR-AEC1-P
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- Part No.:
- MPQ4475MGR-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 25-PowerVFQFN
- Datasheet:
-
MPQ4475MGR-AEC1-P.pdf
- Description:
- IC REG BUCK 5V 2.5A 25QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,104
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Product details
Overview
MPQ4475MGR-AEC1-P from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, monolithic synchronous step-down converter with integrated USB charging port identification and current-limiting switch. It delivers 2.5A continuous output at fixed 5V with programmable line drop compensation, operates from 7V–36V input, and supports BC1.2 DCP, divider, and 1.2V/1.2V auto-detection modes for automotive USB smart charging applications.
For engineers reviewing the MPQ4475MGR-AEC1-P datasheet, MPQ4475MGR-AEC1-P pinout, MPQ4475MGR-AEC1-P application, or MPQ4475MGR-AEC1-P equivalent, key selection considerations include its triple-frequency selectability (150/250/350 kHz), ±8kV HBM ESD rating on DP/DM/USB pins, hiccup-mode over-current protection with <1s short-circuit recovery, and QFN-25 (4mm×4mm) package with exposed thermal pad for automotive under-hood thermal management.
Technical Context
The MPQ4475MGR-AEC1-P integrates a peak-current-mode controlled buck regulator with internal 40mΩ/32mΩ HS/LS MOSFETs and a dedicated 24mΩ USB power switch. Its control architecture includes a 1V internal reference, optimized error amplifier with internal compensation, and dynamic OVP threshold that scales with load to maintain 4.75–5.25V at the cable terminal.
USB auto-detection uses a state machine implementing BC1.2 short mode, divider mode (2.7V on DP/DM), and 1.2V/1.2V mode - each triggering distinct line drop compensation profiles and output voltage setpoints (5.05V or 5.25V). The VDROP pin selects three compensation levels (GND/float/VCC), enabling precise trace-loss compensation up to 500mV at 2.4A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 7V to 36V - supports full automotive battery range including cold-crank (6.5V transient) and load-dump (40V absolute max). |
| Output Voltage | Fixed 5.05V ±1% - regulated with programmable line drop compensation to maintain 5V at load end across long PCB traces or cables. |
| Continuous Output Current | 2.5A - delivered by integrated synchronous buck stage with 40mΩ/32mΩ RDS(ON) MOSFETs and thermal shutdown at 165°C. |
| USB Switch Current Limit | 2.75A ±5% - accurate foldback current limiting with hiccup recovery (3ms on / 500ms off) during sustained overload. |
| Switching Frequency | Selectable 150/250/350 kHz - configured via FREQ pin (float/GND/VCC) to optimize EMI, efficiency, and inductor size. |
| USB Port Identification | BC1.2 DCP, Divider Mode, 1.2V/1.2V Mode - autonomous detection without host MCU intervention; DP/DM pins rated ±8kV HBM. |
| Protection Features | Hiccup OCP, 6V buck OVP (recovery at 5.75V), thermal shutdown (165°C), UVLO (5.7V rising), and USB OVP with dynamic threshold. |
Pinout & Package
MPQ4475MGR-AEC1-P is housed in a thermally enhanced QFN-25 (4mm × 4mm) package with exposed thermal pad (Pin 25), optimized for automotive under-hood conduction cooling. The 4-layer PCB layout requires multiple vias under the thermal pad and direct copper connection to PGND plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 23 (DM) | USB D− data line | Bi-directional handshake pin for BC1.2/Divider/1.2V mode detection; ±8kV HBM ESD rated. |
| 2 (USB) | USB power output | Current-limited 2.75A output with soft-start, discharge path, and dynamic OVP; connects directly to USB connector VBUS. |
| 3, 14, 24 (OUT) | Buck output node | 5V regulated output feeding USB switch input; shared with internal current-sense for line drop compensation. |
| 4, 13 (IN) | Main power input | 7–36V supply input; also powers internal circuitry and high-side driver bootstrap via BST pin. |
| 5, 6, 11, 12 (PGND) | Power ground | High-current return path for buck inductor and USB switch; must be low-impedance copper plane with multiple vias. |
| 7 (FREQ) | Frequency select | Logic-level input: float = 150kHz, GND = 250kHz, VCC = 350kHz - enables EMI tuning without external components. |
| 8 (EN) | Enable control | Active-high logic input with 1.43V threshold and 140mV hysteresis; internal 1MΩ pull-down allows auto-shutdown when floating. |
| 9, 25 (SW) | Buck switch node | Drain of internal HS-FET and source of LS-FET; requires wide copper trace and low-inductance routing to minimize switching loss. |
| 10 (BST) | Bootstrap supply | Connects to SW via 0.1µF ceramic capacitor to generate floating gate drive for HS-FET; UVLO protected at 2.2V. |
| 15, 20, 21 (NC) | No connection | Thermally isolated pads; Pin 15 may be tied to OUT for improved thermal dissipation; others must remain floating. |
| 16, 17 (AGND) | Analog ground | Reference for error amplifier and current sense; must be connected to PGND at single point near IC to avoid noise coupling. |
| 18 (VCC) | Internal LDO output | 5V regulated supply for internal logic; requires 0.22µF ceramic decoupling capacitor placed adjacent to pin. |
| 19 (VDROP) | Line drop compensation select | Three-state input (GND/float/VCC) setting compensation gain: 130mV/400mV/280mV at 2.4A for trace IR drop correction. |
| 22 (DP) | USB D+ data line | Bi-directional handshake pin paired with DM; ±8kV HBM ESD rated; used for all auto-detection schemes. |
Key Features
| Feature | Design Value |
|---|---|
| Triple-frequency selectability | 150/250/350 kHz via single FREQ pin - enables EMI compliance across diverse automotive board layouts without changing BOM. |
| Programmable line drop compensation | Three-level VDROP selection (GND/float/VCC) delivering 130–400mV correction at 2.4A - maintains 5V ±5% at USB connector despite >200mΩ trace resistance. |
| Automotive-grade USB auto-detection | Hardware-based BC1.2 DCP, divider, and 1.2V/1.2V mode recognition - eliminates need for external MCU firmware or USB protocol stack. |
| Robust fault protection | Hiccup OCP (<1s recovery), buck OVP (6V trip / 5.75V reset), thermal shutdown (165°C), and ±8kV HBM on DP/DM/USB pins - meets ISO 10605 requirements. |
| Integrated power stage | 40mΩ/32mΩ HS/LS buck MOSFETs + 24mΩ USB switch - reduces external component count to only inductor, input/output caps, and bootstrap cap. |
Applications
| Front-Panel USB Charging Port | Rear-Seat Entertainment Power |
|---|---|
|
Use Scenario: Integrated 12V-to-5V USB charging port on vehicle center console with 2m cable run to Type-A socket. IC Role / Device Role / Timing Role: Primary buck regulator + USB identification and current limiting; provides stable 5V with line drop compensation to offset 350mV IR loss. Use Value: Delivers full 2.5A to QC2.0/3.0 devices without voltage sag or thermal derating, validated per AEC-Q100 Grade 1 (−40°C to +125°C TJ). |
Use Scenario: Power supply for rear-seat tablet docks requiring plug-and-play charging without host negotiation. IC Role / Device Role / Timing Role: Autonomous USB DCP port emulator; detects Apple, Samsung, and BC1.2 devices in <100ms using hardware state machine. Use Value: Eliminates need for USB controller MCU and firmware updates; supports legacy and modern devices with zero software overhead. |
| Telematics Control Unit (TCU) USB Interface | ADAS Camera Module Power |
|
Use Scenario: USB power for firmware update port on LTE-connected TCU operating in engine bay with 85°C ambient. IC Role / Device Role / Timing Role: High-reliability 5V rail generator with hiccup OCP and thermal shutdown; withstands 40V load dump transients. Use Value: Maintains safe operation during automotive transients; <1s short-circuit recovery prevents system lockup during accidental VBUS shorts. |
Use Scenario: Compact 5V supply for dual-lane MIPI camera module mounted near windshield with minimal PCB area. IC Role / Device Role / Timing Role: Space-constrained buck + USB switch in QFN-25 (4mm×4mm); thermal pad enables 2.5A delivery in 160mm² footprint. Use Value: Replaces discrete buck + USB switch solution, reducing BOM count by 7 parts and improving EMI via integrated frequency selection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB-integrated buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4475MGR-Z | AEC-Q100 unqualified commercial version; identical electrical specs but no automotive qualification testing or extended temperature validation. | Suitable for non-automotive industrial or consumer USB charging applications where AEC-Q100 is not mandated. | Select MPQ4475MGR-Z only if automotive qualification, extended temperature operation, or PPAP documentation is unnecessary. |
| TPS62130AQRGTRQ1 | Automotive 3A buck only - no integrated USB switch, BC1.2 detection, or line drop compensation; requires external USB IC for charging functionality. | Used in systems where USB port control is handled by separate microcontroller or USB PD controller. | Choose TPS62130AQRGTRQ1 when system architecture separates power conversion and USB protocol handling, and higher 3A buck current is required. |
Compared with MPQ4475MGR-Z, the AEC1-P variant adds guaranteed −40°C to +125°C operation, automotive qualification testing, and PPAP support - critical for Tier-1 production. Against TPS62130AQRGTRQ1, MPQ4475MGR-AEC1-P reduces total solution size and BOM count by integrating USB functions, but trades off maximum buck current (2.5A vs. 3A).
Availability
MPQ4475MGR-AEC1-P is available at Aetrix Electronics and suitable for automotive front-panel USB charging ports, rear-seat entertainment power systems, telematics control units, and ADAS camera module power supplies requiring stable component supply with AEC-Q100 Grade 1 compliance.
Supply support for MPQ4475MGR-AEC1-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 manufacturing partnerships.
The MPQ4475M product line targets automotive USB charging infrastructure, integrating buck regulation, USB port identification, and robust protection into a single AEC-Q100 qualified device to simplify infotainment and connectivity subsystem design.
FAQ
What USB charging standards does MPQ4475MGR-AEC1-P support?
The MPQ4475MGR-AEC1-P supports USB Battery Charging Specification 1.2 (BC1.2) Dedicated Charging Port (DCP) mode, YD/T 1591-2009 divider mode (2.7V on DP/DM), and 1.2V/1.2V mode. Detection is performed autonomously by internal hardware state machine without MCU involvement, completing identification within 100ms of power-up.
How does line drop compensation work and how is it configured?
Line drop compensation corrects for voltage loss across PCB traces or cables using the internal current-sense signal from the USB switch. The VDROP pin accepts three logic states: GND (130mV compensation), float (400mV), or VCC (280mV) - selected to match trace resistance. At 2.4A load, this delivers up to 400mV of boost to maintain 5V at the load end.
What is the thermal performance of MPQ4475MGR-AEC1-P in automotive environments?
In a standard 4-layer PCB with 2oz copper and 10 thermal vias under the exposed pad, MPQ4475MGR-AEC1-P sustains 2.5A continuous output at +85°C ambient with ≤125°C junction temperature. Thermal shutdown activates at 165°C with 20°C hysteresis, ensuring reliable operation in under-hood locations per AEC-Q100 Grade 1 requirements.
Can MPQ4475MGR-AEC1-P operate with input voltage below 7V?
No - the device has a 5.7V UVLO rising threshold and requires ≥7V for guaranteed operation per datasheet specifications. Below 7V, the buck converter ceases switching and the USB port is disabled. Input transients down to 6.5V are tolerated briefly during cold-crank, but sustained operation below 7V is not supported.
What is the purpose of the NC pins and can they be used for thermal relief?
Pins 15, 20, and 21 are no-connect; Pin 15 is thermally connected to the die and may be soldered to the OUT net to improve heat transfer, while Pins 20 and 21 must remain electrically floating. This thermal enhancement option is documented in the datasheet and validated for use in high-power automotive applications.
Does MPQ4475MGR-AEC1-P support USB suspend mode or dynamic current adjustment?
No - the device provides fixed 2.75A current limit and lacks USB suspend signaling or dynamically adjustable current profiles. It implements only charging port emulation (DCP/divider/1.2V) and does not support USB enumeration, data transfer, or BC1.2 CDP/SDP modes requiring data-line communication.
What is the minimum recommended input capacitance for MPQ4475MGR-AEC1-P?
A minimum 100μF low-ESR electrolytic capacitor plus two 10μF X5R/X7R ceramics placed adjacent to IN and PGND is recommended. The ceramics handle high-frequency ripple, while the bulk capacitor absorbs low-frequency energy; RMS current rating must exceed 1.25A to support 2.5A output at worst-case VIN = 2×VOUT.
MPQ4475MGR-AEC1-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 25-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 7V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 2.5A
- Frequency - Switching:
- Selectable
- Synchronous Rectifier:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 25-QFN (4x4)
MPQ4475MGR-AEC1-P FAQ
1.How can I place an order for MPQ4475MGR-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4475MGR-AEC1-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 MPQ4475MGR-AEC1-P reliable?
The price and inventory of MPQ4475MGR-AEC1-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ4475MGR-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPQ4475MGR-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4475MGR-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4475MGR-AEC1-P?
MPQ4475MGR-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4475MGR-AEC1-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 MPQ4475MGR-AEC1-P?
For technical support, including MPQ4475MGR-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4475MGR-AEC1-P requirements.
6.How does Aetrix verify that MPQ4475MGR-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPQ4475MGR-AEC1-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 MPQ4475MGR-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPQ4475MGR-AEC1-P?
All MPQ4475MGR-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4475MGR-AEC1-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 MPQ4475MGR-AEC1-P part is unused and in its original packaging.
Return procedure for MPQ4475MGR-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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