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

Monolithic Power Systems Inc. MPQ4480GV-AEC1-P

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

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Part No.:: MPQ4480GV-AEC1-P

Manufacturer:: Monolithic Power Systems Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 25-PowerVFQFN

Datasheet:: MPQ4480GV-AEC1-P.pdf

Description:: IC REG BUCK ADJ 6A 25QFN

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Product details

Overview

MPQ4480GV-AEC1-P 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-side/low-side MOSFETs, supports adjustable switching frequency (235kHz–2.2MHz), and features integrated 4mΩ ground-sensing resistor for accurate current limiting-designed for automotive infotainment power rails requiring robust thermal and fault protection.

For engineers reviewing the MPQ4480GV-AEC1-P datasheet, MPQ4480GV-AEC1-P pinout, MPQ4480GV-AEC1-P application, or MPQ4480GV-AEC1-P equivalent, key selection considerations include its QFN-25 wettable flanks package, three-level CC current limit (2.75A/3.75A/7.5A), forced PWM mode, battery short-to-ground protection via GATE-driven external N-MOSFET, and line drop compensation with programmable gain via VDROP pin.

Technical Context

The MPQ4480GV-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 for bias enable, 2V for full operation) and auto pull-up current (7µA) support reliable automotive start-stop sequencing.

It implements hierarchical protection: hiccup-mode overcurrent (triggered at RGND-to-PGND >12A), output overvoltage (115% VREF trip, 105% release), thermal shutdown at 165°C with 20°C hysteresis, and UVLO (3.95V rising, 3.45V falling). The integrated 4mΩ RSENSE enables precise ground-referenced current sensing independent of external shunt placement.

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 - sustained delivery under full thermal derating per AEC-Q100 Grade 1 (−40°C to +125°C TJ).
Switching Frequency	235kHz to 2.2MHz - adjustable via FREQ pin resistor; SYNC input accepts 300kHz–2.1MHz external clock for EMI reduction.
Current Limit Thresholds	2.75A / 3.75A / 7.5A - set by ILIM pin state (GND/float/VCC); enables scalable protection for diverse load profiles.
Feedback Reference	1.0V ±15mV - tight tolerance enables accurate 1V–20V output programming with standard resistor dividers.
Thermal Shutdown	165°C with 20°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking in confined enclosures.
Package	QFN-25 (4mm × 5mm) with wettable flanks - supports automated optical inspection (AOI) and improves solder joint reliability in automotive reflow profiles.

Pinout & Package

MPQ4480GV-AEC1-P is housed in a thermally enhanced QFN-25 (4mm × 5mm) package with exposed thermal pad and wettable flanks for automotive-grade solder joint inspection. Pin layout follows standard MPS QFN-25 top view with PGND, IN, SW, and FB positioned for optimal power path routing and noise isolation.

Pin/Terminal	Circuit Role	Design Meaning
1, 5, 13, 17 PGND	Power ground reference	Primary return path for high-current switch node; must be connected together with low-inductance copper and multiple vias to minimize ground bounce.
2, 16 RGND	Remote ground sense	Connects to USB_GND via external N-MOSFET; internal 4mΩ resistor enables battery short-to-ground detection and driver disable at >12A.
3, 15 IN	Main input supply	Accepts 4.2V–36V; powers internal circuitry and serves as drain for HS-FET; requires local ceramic input capacitor.
4, 8, 9, 14 SW	Switch node	High-frequency connection point for external inductor; all pins must be shorted on PCB with wide copper trace to reduce parasitic inductance.
11 EN	Enable control	Two-threshold logic: ≥1V enables bias circuits; ≥2V initiates switching; internal 7µA pull-up allows floating-start capability.
12 FREQ/SYNC	Frequency programming	Resistor-to-GND sets fSW (235kHz–2.2MHz); also accepts external clock (300kHz–2.1MHz) for synchronized multi-rail systems.
23 ILIM	Current limit select	Three-state pin (GND/float/VCC) configures CC limit thresholds: 2.75A / 3.75A / 7.5A - critical for USB hub and wireless charging load matching.
25 FB	Output voltage feedback	Compares divided output against 1.0V reference; supports 1V–20V regulation with external resistor divider and line drop compensation.

Key Features

Feature	Design Value
Integrated Power Stage	20mΩ HS / 15mΩ LS MOSFETs - eliminates external FETs and gate drivers, reducing BOM count and board area in space-constrained automotive modules.
Line Drop Compensation	Programmable gain (0.6/3.25/6.75 µA/A) via VDROP pin - actively corrects voltage drop across long PCB traces or connectors to maintain stable load-side voltage.
Low-Dropout Mode	Auto frequency foldback below VIN–VOUT < 1V - extends regulation range during battery brownout while maintaining control stability.
EN Shutdown Discharge	Active low-side discharge during EN=LOW - ensures rapid output voltage collapse for safe hot-plug or system reset sequences in USB applications.
Battery Short Protection	GATE pin pulls low at RGND-to-PGND >12A - disables external N-MOSFET within microseconds to prevent catastrophic failure during USB_GND-to-battery shorts.

Applications

Automotive Infotainment System

Automotive USB Hub

Use Scenario: Powering head-unit display, audio processor, and touch controller from 12V battery rail with strict EMI limits.

IC Role / Device Role / Timing Role: Primary 5V/3.3V buck regulator with spread-spectrum-capable SYNC input for coexistence with RF modules.

Use Value: 2.2MHz operation enables smaller 2.2µH inductor; forced PWM mode eliminates audible noise during audio playback.

Use Scenario: Supplying dual USB 3.0 ports with overcurrent protection and dynamic load-step response.

IC Role / Device Role / Timing Role: Constant-current-limited 5V source with programmable ILIM and fast hiccup recovery after cable short events.

Use Value: Three-level CC limit (2.75A/3.75A/7.5A) matches USB BC1.2/CDP/DCP charging profiles without firmware intervention.

Wireless Charging Transmitter

ADAS Camera Power Module

Use Scenario: Generating stable 9V/12V for Qi transmitter coil driver ICs with high transient load rejection.

IC Role / Device Role / Timing Role: High-efficiency synchronous buck with low dropout mode to sustain output during engine cranking (VIN dips to 6V).

Use Value: 6A continuous rating supports 15W+ charging; line drop compensation maintains coil driver VDD accuracy across flex-cable impedance.

Use Scenario: Providing isolated 3.3V for image sensor and 1.2V for ISP in compact rear-view camera housing.

IC Role / Device Role / Timing Role: AEC-Q100 Grade 1 power stage with thermal shutdown and OVP for unattended operation in sealed enclosures.

Use Value: 165°C TSD and −40°C to +125°C junction rating ensure reliability in under-hood temperature cycling without derating.

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
MPQ4480GV-FD-AEC1-P	Includes integrated spread-spectrum modulation (±10% around 450kHz) - reduces peak EMI by ~10dB compared to fixed-frequency operation.	Preferred for CISPR 25 Class 5 compliance in infotainment head units where radiated emissions dominate design constraints.	Select FD variant when EMI filtering cost or board area must be minimized; identical pinout and electrical specs except SS function.
TPS54560QDGQRQ1	Lower max output current (5A), wider input range (3.5V–60V), no integrated current-sense resistor - requires external 5mΩ shunt for CC protection.	Suitable for 24V commercial vehicle systems needing higher VIN tolerance but less stringent current-sense accuracy than USB applications.	Choose TPS54560Q if operating above 36V or requiring adjustable soft-start time; verify RGND short-to-battery protection is implemented externally.

Compared with MPQ4480GV-FD-AEC1-P, the MPQ4480GV-AEC1-P offers identical performance and protection without spread spectrum-ideal when EMI is managed via layout/filtering. Against TPS54560QDGQRQ1, it provides higher current, integrated sensing, and automotive-optimized fault responses at the cost of narrower VIN range.

Availability

MPQ4480GV-AEC1-P is available at Aetrix Electronics and suitable for automotive infotainment systems, USB hubs, wireless charging transmitters, and ADAS camera modules requiring stable component supply with AEC-Q100 qualification and long-term production support.

Supply support for MPQ4480GV-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 power management ICs, with core expertise in DC/DC conversion, motor drivers, and LED lighting controllers.

The MPQ4480 product line delivers AEC-Q100-qualified synchronous buck converters optimized for automotive subsystems demanding high efficiency, compact size, and comprehensive fault protection-including infotainment, body electronics, and ADAS power domains.

FAQ

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

A minimum 100µF low-ESR input capacitor (e.g., 100µF polymer + 22µF ceramic) is required adjacent to the IN and PGND pins. This stabilizes the input rail during high di/dt switching events and prevents VIN droop below UVLO during load transients, especially critical in automotive environments with long harness inductance.

How does the VDROP pin affect line drop compensation in practice?

The VDROP pin selects one of three gain levels (0.6/3.25/6.75 µA/A) applied to sensed load current, determining how much current is injected into the FB node to offset trace resistance losses. For example, with VDROP = float and R1 = 40.2kΩ, a 3A load generates ~73mV compensation-sufficient to correct typical 50mΩ PCB trace drop at full current.

Can MPQ4480GV-AEC1-P operate in forced PWM mode across its entire load range?

Yes-forced PWM mode is enabled by pulling the MODE pin high (not present on this variant; default behavior is forced PWM unless configured otherwise). It maintains constant switching frequency down to zero load, eliminating low-frequency beat notes and ensuring predictable EMI spectrum in noise-sensitive audio or camera applications.

What is the purpose of the RGND pin, and how is it used in USB_GND short protection?

RGND provides a dedicated current-sense return path separate from PGND. When connected to USB_GND via an external N-MOSFET, the internal 4mΩ resistor between RGND and PGND develops a voltage proportional to USB load current. At >12A, the GATE pin pulls low to turn off the MOSFET, isolating the short before thermal damage occurs.

Is the MPQ4480GV-AEC1-P compatible with external synchronization from a microcontroller PWM output?

Yes-the FREQ/SYNC pin accepts TTL/CMOS-compatible square waves from 300kHz to 2.1MHz with <25% duty cycle. A 10pF AC-coupling capacitor is required in series to block DC offset. This enables deterministic timing alignment across multiple rails in domain controllers or radar modules without phase jitter.

How does the hiccup-mode overcurrent protection behave during sustained short-circuit conditions?

Upon detecting output current exceeding the ILIM-set threshold, the device enters constant-current mode. If VFB drops below 70% of VREF (indicating severe overload), it triggers hiccup mode: switching halts for ~10ms, then attempts restart. This cycle repeats until the fault clears, limiting average power dissipation to <1W and preventing thermal runaway in enclosed assemblies.

Does MPQ4480GV-AEC1-P require external compensation components for loop stability?

No-the error amplifier features an internally compensated architecture optimized for standard 4.7µH inductors and 10µF–100µF output capacitors. Only the FB resistor divider and input/output capacitors are mandatory; no external RC networks or type-II/III compensators are needed, reducing design iteration time and BOM risk.

MPQ4480GV-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:: 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-P FAQ

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

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

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

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

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

Note: Certain payment methods may incur a processing fee.

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

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

Once your MPQ4480GV-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 MPQ4480GV-AEC1-P?

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

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

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

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

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

Return procedure for MPQ4480GV-AEC1-P:

1.Submit a request within 90 days.

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

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