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Monolithic Power Systems Inc. MPQ4483GV-FD-AEC1-P
- Part No.:
- MPQ4483GV-FD-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 25-PowerVFQFN
- Datasheet:
-
MPQ4483GV-FD-AEC1-P.pdf
- Description:
- IC REG 3A
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
MPQ4483GV-FD-AEC1-P from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, synchronous step-down DC/DC converter optimized for automotive USB charging ports. It delivers 3A continuous output current across a 4.2V–36V input range, integrates BC1.2 DCP/CDP mode support, ground short-to-battery protection, and spread-spectrum frequency modulation (±10% at 450kHz nominal) to reduce EMI in infotainment systems.
For engineers reviewing the MPQ4483GV-FD-AEC1-P datasheet, MPQ4483GV-FD-AEC1-P pinout, MPQ4483GV-FD-AEC1-P application, or MPQ4483GV-FD-AEC1-P equivalent, key selection criteria include its dual-level CC limit (2.75A/3.75A), QFN25 (4mm×5mm) wettable flanks package, integrated 4mΩ ground sense resistor, and programmable line-drop compensation with three gain settings via VDROP pin.
Technical Context
The MPQ4483GV-FD-AEC1-P employs peak-current-mode control with a fixed-frequency oscillator adjustable from 200kHz to 2.2MHz (or internally trimmed to 450kHz ±10% in FD variant). Its architecture integrates high-side (25mΩ) and low-side (20mΩ) MOSFETs, a dedicated GATE driver for external N-channel MOSFETs, and bidirectional USB 2.0 data switching circuitry supporting DP_IN/DP_OUT/DM_IN/DM_OUT paths.
It implements dual-stage overcurrent protection: primary constant-current limiting via ILIM/MODE pin configuration (GND/float/VCC), and secondary 12A threshold triggering 2s forced shutdown of external MOSFETs. Ground short-to-battery protection operates independently using internal RGND–PGND sensing with 4–12mΩ configurable RSENSE.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.2V to 36V - supports full automotive battery range including cold-crank (4.2V) and load-dump (36V) transients. |
| Output Current | 3A continuous - sustained delivery under thermal limits up to +125°C junction temperature. |
| Switching Frequency | 450kHz ±10% with spread spectrum - reduces EMI peak emissions without external synchronization. |
| Feedback Reference | 1.0V ±15mV - enables precise output regulation from 1V to 20V using external resistor divider. |
| RDS(ON) HS/LS | 25mΩ / 20mΩ - minimizes conduction loss and improves efficiency across 0.5–3A load range. |
| Ground Sense Resistor | Integrated 4mΩ - eliminates external current-sense resistor, enabling accurate battery short-to-ground detection. |
| USB Charging Modes | BC1.2 DCP, CDP, Apple Divider, and 1.2V/1.2V - auto-negotiates optimal charge protocol with portable devices. |
Pinout & Package
MPQ4483GV-FD-AEC1-P is housed in a thermally enhanced QFN25 (4mm × 5mm) package with wettable flanks for automated optical inspection (AOI) and improved solder joint reliability in automotive reflow processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,5,13,17 PGND | Power ground reference | Low-impedance return path for high-current switch node; all pins must be tied together with wide copper pour. |
| 2,16 RGND | Remote ground sense | Connects to USB_GND via external 4–12mΩ resistor to enable battery short-to-ground fault detection. |
| 3,15 IN | Main power input | Accepts 4.2–36V; powers internal circuitry and serves as high-side MOSFET drain; requires local ceramic input capacitor. |
| 4,8,9,14 SW | Switch node | Drives external inductor; multiple pins reduce trace inductance and thermal resistance in high-current paths. |
| 11 EN | Enable control | Internal 7µA pull-up allows floating start-up; two-threshold logic (1V/2V) enables bias-on before switching activation. |
| 12 FREQ/SYNC | Frequency control | Unused in FD variant - internal oscillator fixed at 450kHz ±10%; not connected in production layout. |
| 18,19 DP_OUT/DM_OUT | USB host data outputs | Drive D+ and D− lines to upstream host controller; support high-speed data handshaking during charging negotiation. |
| 20,21 DM_IN/DP_IN | USB device data I/O | Bidirectional data interface to downstream USB port; enable BC1.2 DCP/CDP handshake and Apple-specific modes. |
| 22 VDROP | Line drop gain select | Three-level programmable gain (0.7/3.3/6.6 µA/A) for output voltage compensation across PCB trace impedance. |
| 23 ILIM/MODE | Current limit & USB mode | GND=2.75A/DCP, float=3.75A/DCP, VCC=2.75A/CDP - single pin configures both protection and protocol behavior. |
| 24 GATE | External MOSFET driver | Open-drain output pulls low to disable external low-side N-MOSFET during secondary overcurrent events. |
| 25 FB | Voltage feedback | Compares divided output voltage against 1.0V reference; sets regulated output via R1/R2 divider network. |
Key Features
| Feature | Design Value |
|---|---|
| Spread-spectrum EMI reduction | ±10% frequency dither centered at 450kHz - lowers radiated emissions without requiring external SYNC source. |
| Ground short-to-battery protection | Detects <1Ω short between USB_GND and battery via RGND–PGND current sensing - triggers hiccup shutdown before damage. |
| Programmable line-drop compensation | Three gain levels (0.7/3.3/6.6 µA/A) selectable by VDROP pin - maintains stable load-side voltage across long cable runs. |
| Integrated USB data switching | Bidirectional DP/DM routing with BC1.2 CDP/DCP, Apple Divider, and 1.2V/1.2V modes - eliminates need for external USB switches. |
| Low-dropout operation | Auto frequency foldback below 15V input - extends regulation range when VIN approaches VOUT, improving efficiency near dropout. |
Applications
| Automotive USB Charging Port | Infotainment System Power Supply |
|---|---|
|
Use Scenario: Front/rear seat USB-A ports delivering up to 2.4A to smartphones and tablets in vehicles operating from 9–16V battery with transient spikes. IC Role / Device Role / Timing Role: Primary buck regulator with integrated USB data negotiation and battery short-to-ground fault response. Use Value: Eliminates discrete USB switch and current-sense amplifier; meets CISPR 25 Class 5 EMI requirements via spread spectrum. |
Use Scenario: Powering head-unit SoC, display backlight, and audio codecs in centralized infotainment ECUs with strict thermal and noise budgets. IC Role / Device Role / Timing Role: High-efficiency, low-noise 5V/3A supply with dynamic line-drop compensation for remote loads. Use Value: Maintains ±1% output regulation across 300mV IR drop on 10cm PCB traces; supports forced PWM mode for constant-frequency noise control. |
| Automotive USB Hub Controller | Telematics Control Unit (TCU) Power |
|
Use Scenario: Multi-port USB hub in rear-seat entertainment systems requiring simultaneous charging and data transfer to multiple devices. IC Role / Device Role / Timing Role: Dual-role USB power manager with independent DP/DM routing and per-port current limiting. Use Value: Enables CDP mode for data+charge on one port while DCP mode on others; avoids bus contention via internal data switch arbitration. |
Use Scenario: Powering LTE/Wi-Fi modems, GNSS receivers, and CAN gateways in TCUs exposed to -40°C to +105°C ambient and vibration. IC Role / Device Role / Timing Role: AEC-Q100 Grade 1 DC/DC with hiccup-mode OVP/OCP and thermal shutdown for mission-critical connectivity. Use Value: Survives 40V load-dump pulses; thermal shutdown at 165°C with 20°C hysteresis prevents latch-up during prolonged overload. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive USB buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4483GV-AEC1 | No spread-spectrum modulation; FREQ pin functional for 200kHz–2.2MHz adjustment. | Suitable where EMI filtering is handled externally or system-level noise budget permits fixed-frequency operation. | Select when design prioritizes frequency flexibility over EMI reduction, and board space allows additional filtering components. |
| TPS65987D | USB-C PD controller with integrated 3A buck; supports USB Power Delivery 3.0, not BC1.2. | Targets USB-C ecosystems requiring programmable voltage (3.3–20V), not legacy USB-A BC1.2 ports. | Choose only if migrating to USB-C PD architecture; incompatible with BC1.2 DCP/CDP handshaking and Apple-specific modes. |
Compared with MPQ4483GV-AEC1, the FD variant trades frequency configurability for certified EMI reduction, while TPS65987D replaces BC1.2 compatibility with USB-C PD functionality-making MPQ4483GV-FD-AEC1-P the sole fit for AEC-Q100-compliant, spread-spectrum-enabled, legacy USB-A charging in harsh automotive environments.
Availability
MPQ4483GV-FD-AEC1-P is available at Aetrix Electronics and suitable for automotive USB charging ports, infotainment system power supplies, and telematics control units requiring stable component supply, AEC-Q100 qualification, and production-ready EMI compliance.
Supply support for MPQ4483GV-FD-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 core expertise in DC/DC conversion, motor drivers, and LED lighting controllers.
The MPQ4483 product line targets automotive-grade power management for USB interfaces, emphasizing robust fault protection, EMI mitigation, and seamless BC1.2 protocol support in compact QFN packages.
FAQ
What is the purpose of the VDROP pin?
The VDROP pin selects one of three line-drop compensation gain levels (0.7/3.3/6.6 µA/A) to inject current into the FB node, counteracting voltage loss across PCB traces or cables. Pulling VDROP to GND, floating, or VCC sets the gain, enabling precise load-side voltage regulation up to 300mV drop at 3A.
How does ground short-to-battery protection work?
It uses the internal 4mΩ sense resistor between RGND and PGND to monitor current flow from USB_GND to battery ground. If current exceeds threshold (programmed via external RSENSE), the IC enters hiccup mode-cycling on/off-to limit average short-circuit power dissipation and prevent thermal runaway.
Can MPQ4483GV-FD-AEC1-P operate without connecting the FREQ/SYNC pin?
Yes. In the FD variant, the FREQ/SYNC pin is unused-the oscillator is internally trimmed to 450kHz ±10% with spread spectrum. Leaving it unconnected or floating has no effect; tying it to GND or VCC is not recommended and may impair functionality.
What USB protocols does the ILIM/MODE pin configure?
ILIM/MODE directly selects both current limit and USB charging mode: GND sets 2.75A limit and DCP mode; floating sets 3.75A limit and DCP mode; VCC sets 2.75A limit and CDP mode. This dual-function pin eliminates external mode-select resistors.
Is the GATE pin intended for driving an external MOSFET in all applications?
No. The GATE pin drives an external low-side N-channel MOSFET only during secondary overcurrent events (e.g., >12A sensed at RGND). In normal operation, the internal synchronous rectifier handles low-side conduction; GATE remains inactive unless triggered by fault conditions.
Does the MPQ4483GV-FD-AEC1-P support pre-biased output startup?
Yes. When the output is pre-biased at startup, the IC disables both high-side and low-side switches until the internal soft-start capacitor voltage exceeds the feedback voltage. This prevents reverse current flow and ensures controlled ramp-up even with existing output voltage.
What is the maximum allowable input voltage during load-dump transients?
The absolute maximum input voltage is 40V for <10ns pulses. For sustained operation, the recommended maximum is 36V. The device survives ISO 7637-2 Pulse 5a (35V, 400ms) and Pulse 5b (58V, 100ms) when properly decoupled with ≥100µF input capacitance and appropriate TVS clamping.
MPQ4483GV-FD-AEC1-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 25-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 25-QFN (4x5)
MPQ4483GV-FD-AEC1-P FAQ
1.How can I place an order for MPQ4483GV-FD-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4483GV-FD-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 MPQ4483GV-FD-AEC1-P reliable?
The price and inventory of MPQ4483GV-FD-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 MPQ4483GV-FD-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPQ4483GV-FD-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4483GV-FD-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4483GV-FD-AEC1-P?
MPQ4483GV-FD-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4483GV-FD-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 MPQ4483GV-FD-AEC1-P?
For technical support, including MPQ4483GV-FD-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4483GV-FD-AEC1-P requirements.
6.How does Aetrix verify that MPQ4483GV-FD-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPQ4483GV-FD-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 MPQ4483GV-FD-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPQ4483GV-FD-AEC1-P?
All MPQ4483GV-FD-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4483GV-FD-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 MPQ4483GV-FD-AEC1-P part is unused and in its original packaging.
Return procedure for MPQ4483GV-FD-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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