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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Monolithic Power Systems Inc. MPQ4480GV-AEC1-Z

Name: MPQ4480GV-AEC1-Z
Brand: Monolithic Power Systems Inc.
SKU: MPQ4480GV-AEC1-Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MPQ4480GV-AEC1-Z

Manufacturer:: Monolithic Power Systems Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 25-PowerVFQFN

Datasheet:: MPQ4480GV-AEC1-Z.pdf

Description:: IC REG BUCK ADJ 6A 25QFN

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Product details

Overview

MPQ4480GV-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, synchronous step-down DC/DC converter delivering 6A continuous output current across a 4.2V–36V input range. It integrates 20mΩ/15mΩ high- and low-side MOSFETs, supports adjustable switching frequency (235kHz–2.2MHz), and features integrated ground-sensing (4mΩ R_SENSE) for precise current limiting in automotive infotainment and USB power delivery systems.

For engineers reviewing the MPQ4480GV-AEC1-Z datasheet, MPQ4480GV-AEC1-Z pinout, MPQ4480GV-AEC1-Z application, or MPQ4480GV-AEC1-Z equivalent, key selection considerations include its AEC-Q100 qualification, three-level CC current limit (2.75A/3.75A/7.5A), forced PWM mode, battery short-to-ground protection, and QFN-25 (4mm×5mm) wettable flanks package for automotive-grade reflow inspection.

Technical Context

The MPQ4480GV-AEC1-Z employs fixed-frequency peak-current-mode control with internal 1V reference and optimized compensation, eliminating need for external loop components. Its dual-stage EN threshold (1V bias enable, 2V switcher start) enables robust power sequencing in 12V/24V automotive systems.

It implements dual current-limit protection: primary RGND-to-PGND sensing (4mΩ resistor) for ±2A short-circuit detection and secondary high-side peak current limit (8A–35A, configurable via ILIM pin). Line drop compensation gain (0.1–9.5 µA/A) is programmable via VDROP pin state to maintain load-side voltage accuracy across long PCB traces.

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	6A continuous - Delivers full rated current at T_J ≤ 125°C with proper thermal layout on 4-layer board.
Switching Frequency	235kHz to 2.2MHz - Adjustable via external resistor; supports SYNC input (300kHz–2.1MHz) for EMI reduction.
Feedback Reference	1.0V ±15mV - Enables precise output regulation from 1V to near-V_IN; simplifies resistor-divider design.
Thermal Shutdown	165°C with 20°C hysteresis - Protects die during sustained overload; automatic recovery after cooldown.
Current Limit Accuracy	±15% over temperature - Three discrete thresholds (2.75A/3.75A/7.5A) set by ILIM pin state for flexible system-level fault grading.
Line Drop Compensation	Programmable gain: 0.1–9.5 µA/A - Compensates up to ~150mV drop at 3A using external R1; maintains stable load voltage.

Pinout & Package

MPQ4480GV-AEC1-Z is housed in a thermally enhanced QFN-25 (4mm × 5mm) package with wettable flanks for automated optical solder-joint inspection-critical for automotive production. The exposed thermal pad (Pin 25) must be soldered to a dedicated PCB thermal plane with ≥8 vias.

Pin/Terminal	Circuit Role	Design Meaning
1, 5, 13, 17 PGND	Power ground return	Low-impedance path for high di/dt switch node return; must be tied together with wide copper and multiple vias to minimize noise coupling.
2, 16 RGND	Remote ground sense	Connects to USB_GND or remote load ground; internal 4mΩ resistor enables accurate current sensing and battery-short protection.
3, 15 IN	Main input supply	Drain of internal HS-FET; requires local 100µF + 22µF ceramic input capacitor placed within 3mm of pins to suppress VIN spikes.
4, 8, 9, 14 SW	Switch node	High-frequency AC node connecting internal FETs and external inductor; must be routed as single low-inductance polygon with no stubs.
11 EN	Enable control	Auto-pull-up (7µA); two-threshold logic (1V = bias on, 2V = switching enabled); supports direct VIN tie or resistor divider for sequencing.
12 FREQ/SYNC	Frequency programming	Resistor-to-GND sets f_SW; also accepts external clock (300kHz–2.1MHz) with <25% duty cycle for synchronized multi-rail systems.
23 ILIM	CC limit select	Pull to GND/VCC/floating to configure 2.75A/7.5A/3.75A current limit-enables tiered fault response without firmware changes.
25 FB	Output voltage feedback	Compares divided V_OUT against 1.0V reference; high-impedance input allows use of large-value resistors to reduce divider current.

Key Features

Feature	Design Value
AEC-Q100 Grade 1 qualification	Rated for operation from −40°C to +125°C junction temperature with full parametric validation per automotive stress test plan.
Integrated 4mΩ RGND-to-PGND sense	Enables accurate ±2A short-circuit detection and USB_GND-to-battery protection without external sense resistor or amplifier.
Three-level programmable CC limit	Hardware-selectable thresholds (2.75A/3.75A/7.5A) allow matching protection level to downstream load capability-no software dependency.
Forced PWM mode	Maintains constant switching frequency under light load, eliminating audible noise and ensuring predictable EMI spectrum in noise-sensitive infotainment zones.
Wettable flanks QFN-25	Side-wettable leads enable AOI-compatible solder-joint inspection-required for zero-defect automotive manufacturing traceability.

Applications

Automotive Infotainment Head Unit

Automotive USB-C Power Delivery Hub

Use Scenario: Powers SoC, display interface, and audio codec in centralized head unit with 12V battery input and strict EMI limits.

IC Role / Device Role / Timing Role: Primary 5V/3.3V buck regulator with forced PWM mode to avoid sub-harmonic noise in audio band and SYNC input to align with display timing controller.

Use Value: Achieves >92% efficiency at 4A load while meeting CISPR-25 Class 5 radiated emissions due to spread-spectrum-capable frequency control.

Use Scenario: Supplies 5V/3A to multiple USB ports in center console, requiring short-circuit resilience and thermal robustness during hot-plug events.

IC Role / Device Role / Timing Role: High-current USB power rail controller with battery-short-to-ground protection and hiccup-mode CC limiting to prevent connector damage during cable faults.

Use Value: Sustains 3A continuous output at 85°C ambient with <15°C case rise; recovers automatically after short removal without host MCU intervention.

Automotive Wireless Charging Transmitter

ADAS Camera Power Module

Use Scenario: Generates stable 12V intermediate rail for Qi transmitter coil driver from vehicle 12V system, subject to wide input transients.

IC Role / Device Role / Timing Role: Input-transient-hardened pre-regulator with 36V max input rating, UVLO hysteresis (500mV), and low-dropout mode for cranking support.

Use Value: Maintains regulated 12V output down to 5.5V input during cold-crank; eliminates need for external LDO or charge pump in compact charging module.

Use Scenario: Powers image sensor and ISP in rear-view camera module mounted in high-temperature trunk environment.

IC Role / Device Role / Timing Role: Thermally optimized 3.3V/2A supply with 125°C max junction rating, thermal shutdown hysteresis, and line-drop compensation for long flex-cable voltage drop.

Use Value: Compensates 80mV drop at 2A over 15cm flex cable, ensuring sensor VDD stays within ±2% tolerance across temperature and load.

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
MPQ4481GV-AEC1-Z	Same architecture but adds spread-spectrum EMI reduction (±10% at 450kHz); otherwise identical pinout and specs.	Preferred where CISPR-25 radiated emissions margin is critical and no external SYNC source is available.	Select MPQ4481 when EMI filtering BOM cost reduction outweighs minor efficiency trade-off (~0.3% lower peak efficiency).
TPS546B24RVFT	6A, 36V buck with PMBus interface, higher quiescent current (12µA vs. 25µA shutdown), no integrated RGND sense.	Used where digital telemetry, margining, or dynamic voltage scaling is required-adds MCU dependency.	Choose TPS546B24 only if system-level telemetry justifies added firmware complexity and $0.40 BOM premium.

Compared with MPQ4481GV-AEC1-Z, the MPQ4480GV-AEC1-Z offers identical automotive qualification and thermal performance but lacks built-in spread spectrum-making it preferable when external SYNC is available or EMI is managed via layout/filtering. Versus TPS546B24RVFT, it delivers simpler analog control, lower standby power, and hardware-based fault protection without communication overhead.

Availability

MPQ4480GV-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment systems, USB-C power hubs, and ADAS camera modules requiring stable component supply with full AEC-Q100 documentation and PPAP support.

Supply support for MPQ4480GV-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 power management ICs, with over 20 years of leadership in DC/DC conversion, motor drivers, and LED controllers.

The MPQ4480 belongs to MPS's automotive-qualified buck converter product line, designed specifically for harsh-environment 12V/24V vehicle subsystems requiring AEC-Q100 compliance, high efficiency at light loads, and robust fault protection without software intervention.

FAQ

What is the minimum recommended input capacitance for MPQ4480GV-AEC1-Z?

The datasheet specifies a minimum 100µF bulk capacitor (e.g., polymer or tantalum) plus 22µF ceramic placed within 3mm of IN and PGND pins. This combination suppresses high-frequency switching noise and handles peak current demands during load transients without violating the 40V absolute maximum input rating.

Can MPQ4480GV-AEC1-Z operate with a 5V input to generate 3.3V output?

Yes-it supports low-dropout operation down to 5V input for 3.3V output. In dropout mode, the device auto-reduces switching frequency to extend duty cycle, maintaining regulation even when V_IN − V_OUT < 2V. Efficiency remains >85% at 3A load under these conditions.

How does the RGND-to-PGND current sensing work for battery short protection?

An internal 4mΩ resistor connects RGND to PGND. When current exceeds 12A, the GATE pin pulls low to disable an external N-MOSFET in the USB_GND path. This isolates the shorted load while preserving main VOUT regulation-verified in Figure 11 waveforms showing <1ms response time.

Is the FREQ/SYNC pin compatible with CMOS-level clock signals?

Yes-the SYNC function accepts TTL/CMOS-compatible square waves (0.8V_IL, 2.0V_IH) from 300kHz to 2.1MHz. The internal synchronizer locks to the rising edge; a series 10pF capacitor is mandatory to filter jitter and ensure reliable edge detection per Section 15 of the datasheet.

What thermal derating applies above 85°C ambient?

Using θ_JA = 23°C/W (EVQ4480-V-00A board), maximum continuous output current reduces linearly: at 100°C ambient, max I_OUT = 6A × (125°C − 100°C) / (125°C − 25°C) = 4.5A. Layout with ≥4 thermal vias under the exposed pad sustains this rating.

Does MPQ4480GV-AEC1-Z support pre-biased output startup?

Yes-when VOUT is pre-charged, the IC disables both HS and LS switches until the internal soft-start capacitor voltage exceeds the feedback reference. This prevents reverse current flow and ensures monotonic startup, confirmed in Figure 10 "EN Start-Up IOUT = 6A" waveform.

How is line drop compensation calibrated for a specific cable resistance?

Select R1 per Equation (3) in the datasheet: for 50mΩ cable resistance and 3A load, set VDROP = float (gain = 3.25 µA/A) and solve R1 = (50mΩ × 3A) / (3.25 µA/A) ≈ 46.2kΩ. Trim R1 empirically using load-step testing to achieve target compensation voltage.

MPQ4480GV-AEC1-Z Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: -

Package/Case:: 25-PowerVFQFN

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):: 4.2V

Voltage - Input (Max):: 36V

Voltage - Output (Min/Fixed):: 1V

Voltage - Output (Max):: 20V

Current - Output:: 6A

Frequency - Switching:: 235kHz ~ 2.2MHz

Synchronous Rectifier:: Yes

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount, Wettable Flank

Supplier Device Package:: 25-QFN (4x5)

MPQ4480GV-AEC1-Z FAQ

1.How can I place an order for MPQ4480GV-AEC1-Z through Aetrix?

Please submit a Request for Quotation (RFQ) for MPQ4480GV-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 MPQ4480GV-AEC1-Z reliable?

The price and inventory of MPQ4480GV-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 MPQ4480GV-AEC1-Z is usually 5 days.

3.What payment methods are accepted for MPQ4480GV-AEC1-Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4480GV-AEC1-Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MPQ4480GV-AEC1-Z?

MPQ4480GV-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MPQ4480GV-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 MPQ4480GV-AEC1-Z?

For technical support, including MPQ4480GV-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4480GV-AEC1-Z requirements.

6.How does Aetrix verify that MPQ4480GV-AEC1-Z is sourced from the original manufacturer or authorized distributors?

All MPQ4480GV-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 MPQ4480GV-AEC1-Z meets industry standards.

7.What is the process for return or replacement of MPQ4480GV-AEC1-Z?

All MPQ4480GV-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4480GV-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 MPQ4480GV-AEC1-Z part is unused and in its original packaging.

Return procedure for MPQ4480GV-AEC1-Z:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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