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Monolithic Power Systems Inc. MPQ4475MGR-AEC1-Z
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- Part No.:
- MPQ4475MGR-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 25-PowerVFQFN
- Datasheet:
-
MPQ4475MGR-AEC1-Z.pdf
- Description:
- IC REG BUCK 5V 2.5A 25QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,033
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Product details
Overview
MPQ4475MGR-AEC1-Z 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-Z datasheet, MPQ4475MGR-AEC1-Z pinout, MPQ4475MGR-AEC1-Z application, or MPQ4475MGR-AEC1-Z 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-Z 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 an error amplifier referenced to 1V, internal soft-start (1.65ms), and dynamic OVP with 5.75V recovery threshold.
USB auto-detection uses a state machine that defaults to Divider Mode at startup (5.05V output, full line drop comp), then transitions to BC1.2 Short or 1.2V/1.2V Mode (5.25V, half line drop comp) when device handshake is detected - enabling full 2.75A current delivery while maintaining cable-end voltage compliance per BC1.2 spec.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 7V to 36V - supports wide automotive battery transients including cold-crank (6.5V) and load-dump (40V abs max). |
| Output Voltage | Fixed 5V ±1% - regulated with programmable line drop compensation (130–500 mV) to maintain 4.75–5.25V at USB connector under cable IR drop. |
| USB Output Current Limit | 2.75A typical - foldback current limiting and hiccup-mode protection ensure robust short-circuit survival (<1s recovery off-time). |
| Switching Frequency | Selectable: 150/250/350 kHz - enables EMI optimization and inductor size trade-offs without external components. |
| RDS(ON) | HS: 40mΩ, LS: 32mΩ, USB SW: 24mΩ - minimizes conduction loss and thermal rise in high-current automotive environments. |
| ESD Rating | ±8kV HBM on DP, DM, USB pins - meets stringent automotive I/O robustness requirements for infotainment and center console ports. |
| AEC-Q100 Grade | Grade 1 (−40°C to +125°C TJ) - qualified for engine bay and dashboard-mounted USB charging modules. |
Pinout & Package
MPQ4475MGR-AEC1-Z is housed in a thermally enhanced QFN-25 (4mm × 4mm) package with exposed PGND pad for efficient heat dissipation in automotive PCB layouts. The 25-pin layout features dual PGND banks (pins 5,6,11,12,14,24), dedicated AGND (pins 16,17), and isolated data lines (DP/DM) to minimize noise coupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 23 | DM | USB D− data line - bidirectional handshake path for BC1.2/Divider/1.2V mode detection; ±8kV HBM protected. |
| 2 | USB | USB power output - 2.75A current-limited, with discharge resistor and dynamic OVP for cable-end voltage regulation. |
| 3, 14, 24 | OUT | Buck output node - supplies USB input; connects directly to output capacitor and USB VBUS trace with low-inductance routing. |
| 4, 13 | IN | Main input supply - accepts 7–36V; powers internal circuitry and serves as HS-FET drain; requires local 10μF ceramic decoupling. |
| 5, 6, 11, 12, 14, 24 | PGND | Power ground - reference for buck output and USB switch; must be tied to large copper plane with multiple vias for thermal and EMI control. |
| 7 | FREQ | Frequency select - float = 150kHz, GND = 250kHz, VCC = 350kHz; enables EMI spread-spectrum tuning without external resistors. |
| 8 | EN | Enable control - 1.43V threshold with 140mV hysteresis; internal 1MΩ pull-down allows auto-shutdown when left floating. |
| 9, 25 | SW | Switch node - connects to external inductor; requires wide copper pour and minimal loop area to reduce switching losses and EMI. |
| 10 | BST | Bootstrap supply - drives HS-FET gate via 0.1μF ceramic capacitor between BST and SW; UVLO-protected floating rail. |
| 15, 20, 21 | NC | No connection - pins 15 may be tied to OUT for thermal enhancement; pins 20/21 must remain unconnected and floating. |
| 16, 17 | AGND | Analog ground - reference for error amp, OVP, and current sense; must be star-connected to PGND near IC for noise immunity. |
| 18 | VCC | Internal 5V LDO output - powers control logic; requires 0.22μF ceramic decoupling close to pin; regulated from VIN across full input range. |
| 19 | VDROP | Line drop compensation select - GND = 130mV, float = 400mV, VCC = 280mV; sets slope of IR compensation voltage vs. load current. |
| 22 | DP | USB D+ data line - paired with DM for charger ID; same ±8kV HBM rating and layout rules apply. |
Key Features
| Feature | Design Value |
|---|---|
| Triple-frequency selectability | 150/250/350 kHz via single FREQ pin - eliminates external timing resistors and simplifies EMI compliance across vehicle platforms. |
| Programmable line drop compensation | Three-level VDROP pin setting (GND/float/VCC) - dynamically adjusts output voltage to offset up to 500mV IR drop across long USB cables. |
| Integrated BC1.2 auto-detection | Hardware-based state machine supporting DCP, Divider, and 1.2V/1.2V modes - no firmware or host MCU required for plug-and-play charging. |
| Hiccup-mode over-current protection | 3ms ON / 500ms OFF cycle during sustained overload - limits average power dissipation and prevents thermal runaway in short-circuit events. |
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C junction operation - ensures reliability in automotive cabin and under-hood USB charging modules. |
Applications
| Automotive Infotainment USB Port | Center Console Smart Charging Hub |
|---|---|
|
Use Scenario: Integrated USB-A port in head unit or display audio system delivering fast charging to smartphones and tablets. IC Role / Device Role / Timing Role: Primary 5V power source and USB charger ID controller - replaces discrete buck + USB switch + BC1.2 IC solution. Use Value: Reduces BOM count by 3–4 components; maintains 5.05V at connector under 2.5A load with 200mΩ cable resistance via line drop compensation. |
Use Scenario: Multi-port USB charging module mounted in vehicle center console with dual-device support. IC Role / Device Role / Timing Role: Single-chip USB power delivery and protocol negotiation engine - handles BC1.2 handshake autonomously within 100ms of insertion. Use Value: Enables full 2.75A charging in BC1.2 mode without host intervention; ±8kV HBM protects against ESD events in high-touch consumer interfaces. |
| Dashboard-Mounted Telematics Dongle | ADAS Camera Power Module |
|
Use Scenario: Compact OBD-II or LTE telematics dongle drawing power directly from vehicle battery via cigarette lighter or fuse box. IC Role / Device Role / Timing Role: Input-transient hardened DC-DC converter and USB power manager - sustains operation during cold-crank (6.5V) and load-dump (36V). Use Value: 7–36V input range and thermal shutdown (165°C) ensure uninterrupted data logging and GPS tracking in extreme ambient conditions. |
Use Scenario: Power supply for rear-view or surround-view camera modules requiring stable 5V USB-compliant output. IC Role / Device Role / Timing Role: Regulated 5V source with fast discharge path - safely bleeds residual charge from output caps during ignition-off transitions. Use Value: Integrated buck discharge resistor eliminates need for external MOSFET + driver; reduces startup delay and improves system responsiveness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB charging port applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4475MGR-Z | Non-AEC-Q100 commercial grade; identical electrical specs and pinout. | Limited to non-automotive or interior-only applications where extended temperature and qualification are not mandated. | Select when cost sensitivity outweighs automotive qualification requirements and operating temperature stays ≤105°C. |
| TPS65987D | USB-C PD controller with integrated buck; supports 20V/3A PD profiles but lacks BC1.2 DCP hardware auto-detect. | Requires external MCU for legacy USB-A BC1.2 support; targets Type-C ecosystems, not legacy USB-A ports. | Choose only if migrating to USB-C PD architecture; not a drop-in replacement for BC1.2-focused designs. |
Compared with MPQ4475MGR-AEC1-Z, the MPQ4475MGR-Z omits automotive qualification but retains identical performance - ideal for cost-sensitive industrial docks. The TPS65987D adds USB-C PD capability but removes autonomous BC1.2 detection, increasing firmware complexity and BOM count for legacy USB-A use cases.
Availability
MPQ4475MGR-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment systems, center console charging hubs, and telematics dongles requiring stable component supply with AEC-Q100 compliance and extended temperature operation.
Supply support for MPQ4475MGR-AEC1-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 USB power management.
The MPQ4475M product line is designed specifically for automotive USB charging applications - integrating buck regulation, USB switch, and BC1.2 detection into a single AEC-Q100 qualified package to simplify design and reduce system-level footprint.
FAQ
What USB charging protocols does MPQ4475MGR-AEC1-Z support natively?
The MPQ4475MGR-AEC1-Z supports Battery Charging Specification 1.2 (BC1.2) Dedicated Charging Port (DCP) mode, Divider Mode, and 1.2V/1.2V Mode using fully hardware-based auto-detection - no external MCU or firmware is required. It identifies connected devices by monitoring DP/DM voltage levels and resistance states, then configures output voltage and current limit accordingly.
How does line drop compensation work, and how is it configured?
Line drop compensation offsets voltage loss across USB cables by increasing the buck output voltage proportionally to load current. It is configured via the VDROP pin: grounding sets 130mV compensation, floating sets 400mV, and tying to VCC sets 280mV. This generates a current-proportional voltage added to the feedback node, ensuring 4.75–5.25V remains at the connector under varying cable resistance and load.
Can MPQ4475MGR-AEC1-Z operate during automotive cold-crank conditions?
Yes - the MPQ4475MGR-AEC1-Z operates down to 7V input and features an under-voltage lockout (UVLO) with 5.7V rising threshold and 1V hysteresis. During cold-crank events where battery voltage dips to ~6.5V, the device remains functional until VIN falls below 4.7V, and resumes regulation immediately upon recovery - critical for always-on telematics and ADAS modules.
What is the thermal performance of the QFN-25 package in automotive ambient conditions?
In a standard 4-layer PCB with 2 oz copper and 6 thermal vias under the exposed pad, the MPQ4475MGR-AEC1-Z achieves θJA = 44°C/W. At 2.5A load and 85°C ambient, junction temperature rises to ~125°C - within AEC-Q100 Grade 1 limits. Layout adherence to MPS guidelines (wide traces, PGND plane, AGND star point) is essential to sustain full-rated output continuously.
Does MPQ4475MGR-AEC1-Z require external components for USB data line protection?
No - the DP and DM pins feature integrated ±8kV HBM ESD protection per JEDEC JS-001, eliminating the need for external TVS diodes in most automotive interior applications. However, for harsher environments (e.g., exposed exterior ports), adding a 100nF ceramic capacitor in series with each data line is recommended to filter high-frequency noise without affecting BC1.2 detection timing.
How does hiccup-mode over-current protection differ from latch-off protection?
Hiccup-mode cycles the device ON for 3ms and OFF for 500ms during sustained over-current, limiting average power dissipation and preventing thermal damage. Unlike latch-off, which disables output until reset, hiccup-mode enables automatic recovery once the fault clears - essential for automotive systems where manual reset is impractical and intermittent shorts (e.g., cable flex) must self-resolve.
Is the MPQ4475MGR-AEC1-Z compatible with existing MPQ4475MGR-Z PCB footprints?
Yes - MPQ4475MGR-AEC1-Z shares identical QFN-25 (4mm×4mm) package dimensions, pinout, and thermal pad layout with the commercial MPQ4475MGR-Z. No PCB redesign is needed when upgrading to AEC-Q100 qualification; only bill-of-materials and test documentation require update to reflect automotive-grade screening and traceability.
MPQ4475MGR-AEC1-Z 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-Z FAQ
1.How can I place an order for MPQ4475MGR-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4475MGR-AEC1-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 MPQ4475MGR-AEC1-Z reliable?
The price and inventory of MPQ4475MGR-AEC1-Z 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-Z is usually 5 days.
3.What payment methods are accepted for MPQ4475MGR-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4475MGR-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4475MGR-AEC1-Z?
MPQ4475MGR-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4475MGR-AEC1-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 MPQ4475MGR-AEC1-Z?
For technical support, including MPQ4475MGR-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4475MGR-AEC1-Z requirements.
6.How does Aetrix verify that MPQ4475MGR-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ4475MGR-AEC1-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 MPQ4475MGR-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ4475MGR-AEC1-Z?
All MPQ4475MGR-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4475MGR-AEC1-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 MPQ4475MGR-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ4475MGR-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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