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

Monolithic Power Systems Inc. MPQ4462DN-AEC1-LF-P

Name: MPQ4462DN-AEC1-LF-P
Brand: Monolithic Power Systems Inc.
SKU: MPQ4462DN-AEC1-LF-P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MPQ4462DN-AEC1-LF-P

Manufacturer:: Monolithic Power Systems Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 8-SOIC (0.154", 3.90mm Width) Exposed Pad

Datasheet:: MPQ4462DN-AEC1-LF-P.pdf

Description:: IC REG BUCK ADJ 3.5A 8SOICE

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Product details

Overview

MPQ4462DN-AEC1-LF-P from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, asynchronous step-down DC/DC converter with integrated 150mΩ high-side MOSFET, delivering up to 3.5A output current across a 3.8V–36V input range and supporting adjustable output voltages from 0.8V to 30V. It operates at up to 4MHz switching frequency, features 120µA quiescent current, and is packaged in SOIC8E for automotive power rail regulation.

For engineers reviewing the MPQ4462DN-AEC1-LF-P datasheet, MPQ4462DN-AEC1-LF-P pinout, MPQ4462DN-AEC1-LF-P application, or MPQ4462DN-AEC1-LF-P equivalent, key selection criteria include AEC-Q100 qualification, 4MHz programmable frequency for EMI-sensitive automotive subsystems, internal current-limiting without sense resistor, thermal shutdown at 150°C, and SOIC8E package compatibility with legacy PCB layouts.

Technical Context

The MPQ4462DN-AEC1-LF-P implements peak-current-mode control with an internal error amplifier (200V/V gain, 60µA/V transconductance) and a programmable oscillator set via external resistor on FREQ pin-enabling precise frequency scaling from 0.2MHz to 4MHz. Its asynchronous architecture uses an external Schottky diode for rectification, eliminating synchronous gate drive complexity while maintaining efficiency across wide load ranges.

Startup behavior includes internal soft-start (1.5ms VFB ramp), UVLO with 3.0V rising/2.6V falling thresholds and 400mV hysteresis, and bootstrap charging management that requires VIN–VOUT >3V under light-load conditions to sustain BST voltage. Thermal shutdown activates at 150°C with 15°C hysteresis, and minimum ON/OFF times are fixed at 80ns/100ns-critical for stable operation at 4MHz.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	3.8V to 36V - supports direct connection to automotive battery (cold-crank down to ~4V) and industrial 24V rails.
Output Current	3.5A continuous - enables single-chip supply for ADAS sensors, infotainment processors, or body-control modules.
Switching Frequency	Up to 4MHz - allows compact magnetics and avoids AM radio band (0.53–1.71MHz); set by external RFREQ resistor.
Quiescent Current	120µA - sustains >1-year battery life in always-on automotive modules (e.g., telematics wake-up circuits).
Feedback Reference	0.792V typical - sets output accuracy; enables 0.8V–30V adjustment using standard resistor dividers.
Internal MOSFET R_DS(on)	150mΩ - reduces conduction loss at 3.5A; eliminates need for external high-side switch.
Thermal Shutdown	150°C with 15°C hysteresis - ensures fault-tolerant operation in engine-bay or under-hood environments.

Pinout & Package

MPQ4462DN-AEC1-LF-P is housed in an SOIC8E package (body size 4.9mm × 6.0mm, 1.27mm pitch), featuring exposed pad for thermal enhancement and RoHS-compliant lead-free finish (LF suffix). The package supports standard reflow profiles and is compatible with automated optical inspection (AOI) due to gull-wing leads.

Pin/Terminal	Circuit Role	Design Meaning
1 (VIN)	Input Supply	Primary power input; requires local 10µF ceramic decoupling to suppress high-frequency switching noise.
2 (SW)	Switch Node	Drives external Schottky diode cathode; high dv/dt node requiring minimized trace area and proximity to diode.
3 (EN)	Enable Control	Logic-compatible enable with 1.5V rising / 1.2V falling threshold; internal 1µA pull-up allows floating-to-enable operation.
4 (COMP)	Error Amplifier Output	Connects to RC compensation network; clamped between 0.9V–2.0V during regulation; sinks current in shutdown.
5 (FB)	Feedback Input	Senses output divider tap; referenced to 0.792V internal bandgap; sensitive to noise-must be routed away from SW and inductor.
6 (GND)	Power Ground	Common return for power and signal paths; connects to exposed pad for thermal conduction and low-impedance return.
7 (FREQ)	Frequency Set	Accepts resistor to GND (e.g., 18kΩ for 4MHz); determines oscillator frequency and impacts light-load efficiency via frequency foldback.
8 (BST)	Bootstrap Supply	Charges external 0.1µF capacitor to ~5V; powers high-side driver; requires VIN–VOUT >3V for reliable startup under no-load.

Key Features

Feature	Design Value
Integrated 150mΩ High-Side MOSFET	Eliminates external switch and associated gate-drive circuitry-reducing BOM count and layout complexity in space-constrained automotive ECUs.
Programmable 0.2–4MHz Switching Frequency	Enables EMI optimization: 4MHz placement avoids AM band interference; lower frequencies improve efficiency at heavy loads.
120µA Quiescent Current	Meets automotive "always-on" requirements (e.g., CAN wake-up receivers) without compromising battery longevity over extended parking periods.
Internal Soft-Start (1.5ms)	Prevents output overshoot and inrush current during cold-start or reset events-critical for protecting downstream logic and analog sensors.
AEC-Q100 Grade 1 Qualification (−40°C to +125°C)	Validated for under-hood and cabin applications per stress-test requirements including HTOL, TC, and ESD-ensuring reliability in harsh automotive environments.

Applications

ADAS Camera Power Supply

Automotive Infotainment Core Rail

Use Scenario: Powers 1.8V core voltage for 5MP image sensor and ISP in forward-facing camera module operating continuously at −40°C to +105°C ambient.

IC Role / Device Role / Timing Role: Primary step-down regulator providing regulated, low-noise 1.8V/3.5A output; operates at 2.2MHz to avoid interference with camera pixel clock harmonics.

Use Value: Internal current limit and thermal shutdown prevent latch-up during sensor frame bursts; 120µA IQ extends vehicle-off battery life beyond ISO 16750-2 requirements.

Use Scenario: Generates 5V/3A system rail for touchscreen controller, audio codec, and USB PHY in head-unit design with CAN FD communication.

IC Role / Device Role / Timing Role: Main buck converter feeding LDOs; configured at 1.6MHz to coexist with 12.288MHz audio master clock and minimize beat frequencies.

Use Value: Wide 3.8V–36V input handles load-dump transients up to +38V; AEC-Q100 qualification ensures compliance with OEM EMC and reliability standards.

Body Control Module (BCM) Subsystem

Telematics Control Unit (TCU) Always-On Rail

Use Scenario: Supplies 3.3V/2.5A to microcontroller, LIN transceivers, and LED drivers in door module with PWM dimming and wake-on-LIN capability.

IC Role / Device Role / Timing Role: High-efficiency buck regulator supporting pulse-skipping mode at light loads to maintain <150µA system standby current.

Use Value: Programmable frequency allows 4MHz operation during active mode and automatic foldback to 0.5MHz in sleep-reducing switching losses without external control.

Use Scenario: Provides 1.2V/3A core voltage for LTE modem SoC in TCU, remaining active during vehicle sleep to support remote diagnostics and OTA updates.

IC Role / Device Role / Timing Role: Always-on buck converter with EN pin controlled by CAN wake signal; soft-start prevents brown-out during rapid wake transitions.

Use Value: 150mΩ R_DS(on) minimizes dropout at cold-crank (5.5V input), ensuring uninterrupted modem operation during engine start.

Equivalent & Alternatives

The following parts are listed as comparable options for similar step-down converter applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM61480-Q1	4.5V–36V input, 5A output, 2.1MHz fixed frequency, integrated BOOT diode, higher IQ (15µA in FPWM)	Requires external BOOT diode; lacks 4MHz option; supports forced PWM but no frequency foldback	Preferred when synchronous rectification and higher current are needed; less suitable for EMI-critical 4MHz designs
TPS543B20	4.5V–18V input, 3A output, 1MHz–2.2MHz programmable, PMBus interface, digital loop compensation	Narrower VIN range; requires external MOSFETs; adds telemetry and configuration overhead	Selected for systems needing telemetry, adaptive loop tuning, or tighter output voltage tolerance (±0.5%)

Compared with LM61480-Q1 and TPS543B20, MPQ4462DN-AEC1-LF-P offers unique 4MHz operation for EMI mitigation, lowest quiescent current in its class, and AEC-Q100 qualification without digital interface complexity-making it optimal for cost-sensitive, noise-aware automotive power stages where analog simplicity and proven reliability are prioritized.

Availability

MPQ4462DN-AEC1-LF-P is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment head-units, and body control units requiring stable component supply with full AEC-Q100 Grade 1 traceability and long-term production support.

Supply support for MPQ4462DN-AEC1-LF-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 design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MPQ4462 belongs to MPS's automotive-grade DC/DC converter product line, engineered specifically for demanding vehicular environments-including engine control, safety systems, and connectivity modules-where wide input range, low IQ, and AEC-Q100 compliance are mandatory.

FAQ

What is the maximum recommended input voltage for reliable 4MHz operation?

The MPQ4462DN-AEC1-LF-P supports 36V maximum input, but for stable 4MHz operation, MPS recommends VIN ≤12V per Figure 2 in the datasheet. At higher input voltages, minimum ON-time limitations (80ns) cause increased pulse skipping, reducing regulation accuracy and efficiency. For 24V input, reduce frequency to ≤2MHz using a 30kΩ FREQ resistor.

Does this part require an external bootstrap diode?

An external bootstrap diode is not required for standard operation, but is recommended when VIN ≤5V, duty cycle exceeds 65% (VOUT/VIN >0.65), or during no-load conditions where VIN–VOUT <3V. In such cases, adding a BAT54 or IN4148 diode from VIN to BST improves gate-drive reliability and prevents bootstrap capacitor discharge-induced dropout.

How is output voltage adjusted, and what is the feedback reference accuracy?

Output voltage is set by a resistor divider from VOUT to GND, with FB connected to the midpoint. The internal reference is 0.792V (typical), with ±1.3% variation over temperature and line (0.773V to 0.812V). For a 3.3V output, use R2 = 40.2kΩ and R1 = 127kΩ; R2 must be ≤40kΩ to sink the 20µA BST leakage current without affecting regulation.

Can MPQ4462DN-AEC1-LF-P operate in forced PWM mode?

No-MPQ4462DN-AEC1-LF-P does not support forced PWM. It operates in peak-current-mode control with automatic pulse-skipping at light loads to maintain high efficiency. There is no pin or register to disable skip mode; frequency foldback and reduced switching losses are inherent to its analog control architecture.

What thermal considerations apply to the SOIC8E package in automotive ambient?

The SOIC8E package has θJA = 50°C/W on a 4-layer PCB. At 3.5A output and 12V input, power dissipation is ~0.5W; junction temperature rise is ~25°C above ambient. To meet Grade 1 (−40°C to +125°C), ensure board-level copper area under the exposed pad and ≥6 thermal vias (15mil barrel, 40mil pitch) to keep TJ <140°C at +105°C ambient.

Is the EN pin compatible with 3.3V microcontroller GPIO without level shifting?

Yes-the EN pin has 1.5V rising and 1.2V falling thresholds with 300mV hysteresis, making it directly compatible with 3.3V logic. A microcontroller GPIO can drive EN high (≥1.7V) to enable and low (≤1.1V) to disable. When left floating, the internal 1µA pull-up biases EN to ~3V, enabling the device by default.

How does the internal current limit function without a sense resistor?

The MPQ4462DN-AEC1-LF-P uses a precision current-sense MOSFET integrated with the main power switch. This replicates the main switch's R_DS(on) ratio, feeding a scaled current to the current comparator. The COMP voltage directly sets the peak switch current-eliminating external sensing components while maintaining ±10% current-limit accuracy across temperature and process variation.

MPQ4462DN-AEC1-LF-P Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width) Exposed Pad

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):: 3.8V

Voltage - Input (Max):: 36V

Voltage - Output (Min/Fixed):: 0.8V

Voltage - Output (Max):: 30V

Current - Output:: 3.5A

Frequency - Switching:: Up to 4MHz

Synchronous Rectifier:: No

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOICE

MPQ4462DN-AEC1-LF-P FAQ

1.How can I place an order for MPQ4462DN-AEC1-LF-P through Aetrix?

Please submit a Request for Quotation (RFQ) for MPQ4462DN-AEC1-LF-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 MPQ4462DN-AEC1-LF-P reliable?

The price and inventory of MPQ4462DN-AEC1-LF-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ4462DN-AEC1-LF-P is usually 5 days.

3.What payment methods are accepted for MPQ4462DN-AEC1-LF-P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4462DN-AEC1-LF-P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MPQ4462DN-AEC1-LF-P?

MPQ4462DN-AEC1-LF-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MPQ4462DN-AEC1-LF-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 MPQ4462DN-AEC1-LF-P?

For technical support, including MPQ4462DN-AEC1-LF-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4462DN-AEC1-LF-P requirements.

6.How does Aetrix verify that MPQ4462DN-AEC1-LF-P is sourced from the original manufacturer or authorized distributors?

All MPQ4462DN-AEC1-LF-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 MPQ4462DN-AEC1-LF-P meets industry standards.

7.What is the process for return or replacement of MPQ4462DN-AEC1-LF-P?

All MPQ4462DN-AEC1-LF-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4462DN-AEC1-LF-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 MPQ4462DN-AEC1-LF-P part is unused and in its original packaging.

Return procedure for MPQ4462DN-AEC1-LF-P:

1.Submit a request within 90 days.

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

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