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Monolithic Power Systems Inc. MPQ4483GV-AEC1-P
- Part No.:
- MPQ4483GV-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 25-PowerVFQFN
- Datasheet:
-
MPQ4483GV-AEC1-P.pdf
- Description:
- IC REG 3A
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
MPQ4483GV-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 dual-level adjustable constant-current limiting - enabling robust 5V USB power delivery in infotainment head units and rear-seat hubs.
For engineers reviewing the MPQ4483GV-AEC1-P datasheet, MPQ4483GV-AEC1-P pinout, MPQ4483GV-AEC1-P application, or MPQ4483GV-AEC1-P equivalent, key selection criteria include its QFN25 (4mm×5mm) wettable flanks package, 200kHz–2.2MHz programmable switching frequency, integrated 4mΩ ground-sense resistor, battery short-to-ground driver, and ILIM/MODE-configurable USB charging protocol compliance.
Technical Context
The MPQ4483GV-AEC1-P employs peak-current-mode control with internal 1V reference and optimized compensation, enabling stable regulation without external loop components. Its dual-stage EN threshold (1V bias enable, 2V switcher start) and auto-pull-up design simplify system-level power sequencing in automotive environments.
It implements bidirectional USB 2.0 high-speed data switching via DP_IN/DP_OUT and DM_IN/DM_OUT pins, while using RGND–PGND sensing to enable line-drop compensation with three programmable gain levels (0.7/3.3/6.6 μA/A) controlled by VDROP pin state - directly supporting voltage stabilization across long PCB traces to remote USB connectors.
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 at TJ ≤ 125°C with QFN25 thermal resistance θJA = 27°C/W on 4-layer board. |
| Switching Frequency | 200kHz to 2.2MHz - adjustable via resistor on FREQ/SYNC pin; enables EMI optimization and small external inductor selection. |
| Feedback Reference | 1.0V ±15mV - precise internal reference enables accurate 5V USB output with standard R1/R2 divider. |
| USB Charging Modes | BC1.2 DCP & CDP, Apple Divider, 1.2V/1.2V - configured via ILIM/MODE pin logic state for plug-and-play device compatibility. |
| Ground Short Protection | Dedicated battery-short-to-USB_GND driver - actively limits fault current during USB port ground shorts without disabling entire system. |
| Thermal Shutdown | 165°C with 20°C hysteresis - ensures safe recovery after overtemperature events in enclosed automotive enclosures. |
Pinout & Package
MPQ4483GV-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 production. The exposed thermal pad (pins 1, 5, 13, 17, 19, 25) must be soldered to a large PGND copper area with ≥6 thermal vias.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 13, 17, 19, 25 PGND | Power ground return path | Primary low-impedance return for high-current SW node and output capacitor; all must be tied together with wide copper and multiple vias. |
| 2, 16 RGND | Remote ground sense terminal | Connects to USB connector ground via dedicated trace; enables line-drop compensation using internal 4mΩ sense resistor between RGND and PGND. |
| 3, 15 IN | Main input supply | Accepts 4.2V–36V; powers internal circuitry and serves as drain for integrated 25mΩ/20mΩ HS/LS MOSFETs. |
| 4, 8, 9, 14 SW | Switch node | High-frequency connection point for external inductor; all four pins must be shorted with low-inductance PCB trace. |
| 6 AGND | Analog reference ground | Must be connected to PGND near FB and VCC decoupling caps to minimize noise coupling into error amplifier. |
| 7 VCC | Internal 5V LDO output | Supplies bias for control logic; requires 1μF ceramic capacitor to PGND placed adjacent to pin. |
| 10 BST | Bootstrap supply for HS gate driver | Requires 0.22μF capacitor between BST and SW; enables high-side MOSFET drive above VIN during duty cycle. |
| 11 EN | Enable control with auto-pull-up | 7μA internal pull-up allows floating EN startup; thresholds at ~1V (bias on) and ~2V (switcher active). |
| 12 FREQ/SYNC | Frequency programming or sync input | Resistor-to-GND sets frequency; accepts external 200kHz–2.2MHz clock via 10pF AC-coupling capacitor. |
| 18 DP_OUT / 19 DM_OUT | USB D+ and D− outputs to host | Drive USB host controller data lines; support high-speed signaling up to 480Mbps with <5.3pF pin capacitance. |
| 20 DM_IN / 21 DP_IN | USB D− and D+ inputs from connector | Interface directly with USB Type-A receptacle; implement BC1.2 handshake via internal resistive dividers and voltage comparators. |
| 22 VDROP | Line drop compensation gain select | GND/Float/VCC selects 0.7/3.3/6.6 μA/A gain - scales feedback current injection to offset IR drop in USB cable traces. |
| 23 ILIM/MODE | Current limit & USB mode configuration | GND=2.75A/DCP, Float=3.75A/DCP, VCC=2.75A/CDP - sets both CC threshold and BC1.2 protocol negotiation behavior. |
| 24 GATE | External low-side MOSFET driver | Open-drain output pulls low during secondary current limit (e.g., >12A); used for external overcurrent protection staging. |
| 25 FB | Output voltage feedback | Connects to resistor divider from VOUT to PGND; regulates output using internal 1.0V reference and error amplifier. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated USB BC1.2 compliance | Hardware-based DCP/CDP/Apple Divider/1.2V/1.2V mode detection eliminates need for external microcontroller or firmware. |
| Battery short-to-USB_GND protection | Dedicated driver activates during ground fault, limiting short-circuit current without disabling main regulator or host communication. |
| Programmable line-drop compensation | Three gain levels (via VDROP pin) + external R1 allow precise compensation of up to ~85mV drop at 3A - maintaining 5.00V ±50mV at connector. |
| Synchronous buck with low RDS(ON) | 25mΩ HS / 20mΩ LS internal MOSFETs enable >90% efficiency at 2A/12VIN→5VOUT, reducing thermal load in space-constrained modules. |
| AEC-Q100 Grade 1 qualification | Rated for −40°C to +125°C junction temperature with validated reliability testing - suitable for under-hood and dashboard mounting. |
| Forced PWM and low-dropout mode | Forced PWM eliminates subharmonic noise in audio-sensitive systems; auto-frequency foldback maintains regulation down to VIN–VOUT < 100mV. |
Applications
| Automotive USB Charging Port | Infotainment Head Unit Power |
|---|---|
|
Use Scenario: Front/rear 5V/2.4A USB-A ports in vehicles requiring plug-and-play smartphone/tablet charging. IC Role / Device Role / Timing Role: Primary DC/DC regulator and USB protocol negotiator - manages power delivery, data line handshaking, and fault response autonomously. Use Value: Eliminates need for separate USB charger IC and discrete buck converter; reduces BOM count by ≥4 components while meeting USB-IF and OEM EMC requirements. |
Use Scenario: Power supply for SoC, display, and audio subsystems in centralized infotainment head units. IC Role / Device Role / Timing Role: High-efficiency, transient-robust 5V rail generator with integrated USB data switching - supplies USB peripherals and enables diagnostics via DP/DM lines. Use Value: Maintains stable 5V output during cold-crank (4.2V IN) and load-dump (36V IN) events; supports simultaneous charging + high-speed data transfer without interference. |
| Rear-Seat USB Hub | Automotive Telematics Module |
|
Use Scenario: Multi-port USB hub behind rear seat offering charging and media playback for passengers. IC Role / Device Role / Timing Role: Dual-role power manager - regulates 5V bus and arbitrates D+/D− signals between upstream host and downstream devices. Use Value: Enables bidirectional USB 2.0 data pass-through while delivering full 3A shared current; line-drop compensation ensures consistent voltage at each port connector. |
Use Scenario: Power management for LTE/Wi-Fi modules, GNSS receivers, and CAN gateway interfaces in telematics control units (TCUs). IC Role / Device Role / Timing Role: Primary 5V supply with hiccup-mode OVP/OCP and thermal shutdown - sustains operation during extended vehicle-off battery drain scenarios. Use Value: Ground short-to-battery protection prevents TCU brownout when USB port is shorted; AEC-Q100 qualification ensures 15-year field reliability in harsh vibration/thermal cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive USB power delivery applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4483GV-FD-AEC1-P | Includes spread-spectrum frequency modulation (±10% around 450kHz) - reduces peak EMI by ~10dB compared to fixed-frequency MPQ4483GV-AEC1-P. | Required where CISPR 25 Class 5 radiated emissions limits are tight; no change to USB functionality or pinout. | Select FD variant if EMI filtering cost or board area must be minimized; identical layout and firmware integration. |
| TPS65987D-SR | USB-C PD controller with integrated 3A buck; supports USB Power Delivery 3.0, programmable voltage (3.3–20V), but lacks BC1.2 DCP/CDP native support. | Targets USB-C ecosystems only; requires external BC1.2 emulation for legacy USB-A compatibility. | Choose only when migrating to USB-C infrastructure; not drop-in compatible due to different protocol stack and pin assignment. |
Compared with MPQ4483GV-FD-AEC1-P, the MPQ4483GV-AEC1-P offers lower EMI design margin but simpler timing analysis; versus TPS65987D-SR, it provides direct BC1.2 compliance and smaller footprint, but lacks USB-C PD negotiation and variable output voltage.
Availability
MPQ4483GV-AEC1-P is available at Aetrix Electronics and suitable for automotive infotainment systems, USB charging ports, and telematics modules requiring stable component supply with AEC-Q100 Grade 1 assurance and long-lifecycle support.
Supply support for MPQ4483GV-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 automotive-grade power management.
The MPQ4483 belongs to MPS's automotive-qualified buck converter product line, designed specifically for USB power delivery in vehicles - emphasizing robustness against battery transients, integrated protocol support, and AEC-Q100 compliance without external firmware dependency.
FAQ
What USB charging protocols does MPQ4483GV-AEC1-P support natively?
MPQ4483GV-AEC1-P supports Battery Charging Specification 1.2 DCP and CDP modes, Apple Divider mode, and 1.2V/1.2V mode - all implemented in hardware without firmware. Protocol selection is determined by the logic state (GND/float/VCC) applied to the ILIM/MODE pin, enabling immediate device recognition upon plug-in.
How does the ground short-to-battery protection function during a USB port fault?
When USB_GND is shorted to battery (e.g., damaged cable), the MPQ4483GV-AEC1-P activates its dedicated driver to sink current through the short path, limiting peak fault current to <2A while maintaining VOUT regulation for other system rails. This prevents system reset and allows graceful recovery once the short is removed.
Can MPQ4483GV-AEC1-P operate with input voltage below 4.2V?
No - the absolute minimum operating input voltage is 4.2V, enforced by an under-voltage lockout (UVLO) with 3.95V rising threshold and 500mV hysteresis. Below this, the device remains disabled; it will not regulate or deliver output current, ensuring reliable cold-crank immunity per automotive requirements.
What is the purpose of the RGND pin, and how should it be routed?
RGND is the remote ground sense terminal used for line-drop compensation. It must be connected via a dedicated trace to the USB connector's ground pin - not to the main PGND plane - so the internal 4mΩ sense resistor measures current flowing through the USB cable path. This enables real-time compensation of IR drop before it affects the load.
Is external compensation required for the MPQ4483GV-AEC1-P feedback loop?
No - the MPQ4483GV-AEC1-P features an internally compensated error amplifier optimized for standard 4.7µH inductors and 22µF–100µF output capacitors. No external compensation components are needed; stability is guaranteed across the full 1V–20V output range with typical output capacitor ESR values.
Does MPQ4483GV-AEC1-P support forced PWM mode, and why is it beneficial?
Yes - forced PWM mode disables pulse-skipping, maintaining constant switching frequency across all load conditions. This eliminates audible noise in audio-sensitive automotive cabins and simplifies EMI filter design by fixing the fundamental switching frequency and harmonic content.
How is the 3A output current rating verified under automotive temperature extremes?
The 3A rating is specified at TJ = +125°C with θJA = 27°C/W on a 4-layer 50mm×50mm PCB. At −40°C ambient, derating is unnecessary; at +85°C ambient, thermal margin remains sufficient for 3A continuous output with proper copper area and thermal vias under worst-case 36V input conditions.
MPQ4483GV-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-AEC1-P FAQ
1.How can I place an order for MPQ4483GV-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4483GV-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-AEC1-P reliable?
The price and inventory of MPQ4483GV-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-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPQ4483GV-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4483GV-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4483GV-AEC1-P?
MPQ4483GV-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4483GV-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-AEC1-P?
For technical support, including MPQ4483GV-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4483GV-AEC1-P requirements.
6.How does Aetrix verify that MPQ4483GV-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPQ4483GV-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-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPQ4483GV-AEC1-P?
All MPQ4483GV-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4483GV-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-AEC1-P part is unused and in its original packaging.
Return procedure for MPQ4483GV-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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