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

Monolithic Power Systems Inc. MPQ2454GQ-AEC1-P

Name: MPQ2454GQ-AEC1-P
Brand: Monolithic Power Systems Inc.
SKU: MPQ2454GQ-AEC1-P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MPQ2454GQ-AEC1-P

Manufacturer:: Monolithic Power Systems Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 10-VFDFN Exposed Pad

Datasheet:: MPQ2454GQ-AEC1-P.pdf

Description:: IC REG BUCK ADJ 600MA 10QFN

Quantity:: RFQ Add To RFQ list

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Product details

Overview

MPQ2454GQ-AEC1-P from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, non-synchronous step-down DC/DC converter with integrated 200mΩ high-side MOSFET, 3.3V–36V input range, 0.6A output current, and programmable switching frequency up to 2.3MHz. It delivers >90% efficiency across load range and supports automotive cold-crank operation via 100% duty-cycle capability and active BST refresh.

For engineers reviewing the MPQ2454GQ-AEC1-P datasheet, MPQ2454GQ-AEC1-P pinout, MPQ2454GQ-AEC1-P application, or MPQ2454GQ-AEC1-P equivalent, key selection criteria include its 3.5μA shutdown current, programmable POK delay, frequency foldback for short-circuit protection, and QFN-10 (3mm×3mm) package with exposed thermal pad.

Technical Context

The MPQ2454GQ-AEC1-P uses current-mode control with cycle-by-cycle peak current limiting and slope compensation for stable transient response. Its oscillator supports external synchronization (350kHz–2.3MHz) and automatic frequency foldback during start-up or overload to prevent inductor current runaway.

It implements low-dropout operation via active BST capacitor refresh when BST–SW voltage falls below 2.5V, enabling regulation down to ~3.1V input at 3.3V output. Thermal shutdown (170°C trip, 25°C hysteresis) and VIN UVLO (2.9V rising, 2.65V falling) ensure fault-tolerant automotive operation.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	3.3V to 36V - supports full automotive battery range including cold-crank (down to ~3.1V)
Output Current	0.6A continuous - sufficient for infotainment SoC cores, ADAS sensors, and body control modules
Switching Frequency	350kHz to 2.3MHz - programmable via FREQ pin resistor; enables compact magnetics and EMI optimization
Quiescent Current	60μA operating / 3.5μA shutdown - extends battery life in always-on vehicle subsystems
Feedback Voltage	0.8V ±2% - enables precise output regulation with standard resistor divider networks
Power Good Accuracy	±10% window with 4.5% hysteresis - provides reliable rail monitoring for microcontroller reset sequencing
Thermal Shutdown	170°C trip with 25°C hysteresis - protects against sustained overload or poor PCB thermal design

Pinout & Package

MPQ2454GQ-AEC1-P is housed in a thermally enhanced QFN-10 (3mm × 3mm) package with exposed thermal pad soldered to PCB ground plane for optimal power dissipation (θ_JA = 50°C/W).

Pin/Terminal	Circuit Role	Design Meaning
1 SW	Switch Node	High-current output of internal MOSFET; requires low-V_F Schottky diode to GND for flyback path
2 VIN	Input Supply	Primary power input (3.3–36V); must be decoupled with low-ESR ceramic capacitor near pin
3 GND	Ground Reference	Signal and power ground; connects to exposed pad for thermal and electrical integrity
4 SS	Soft-Start Control	Capacitor-programmable ramp time; sources 1.8μA to limit inrush current during startup
5 FB	Feedback Input	0.8V reference comparator input; connects to resistor divider to set V_OUT
6 POKDL	POK Delay Programming	Capacitor-to-GND sets POK assertion delay; source current = 1.8μA, threshold = 1.2V
7 POK	Open-Drain Power Good	Active-low indicator pulled low when V_OUT deviates >±10%; requires external pull-up ≤5V
8 FREQ	Frequency Set	Resistor-to-GND selects switching frequency (e.g., 17.4kΩ → 2.3MHz)
9 EN/SYNC	Enable & Sync Input	Digital enable (1V low / 1.8V high) or external clock input (350kHz–2.3MHz)
10 BST	Bootstrap Supply	Charges internal high-side gate driver; requires 0.1μF ceramic capacitor between BST and SW

Key Features

Feature	Design Value
Internal Compensation	Eliminates external compensation network - reduces BOM count and layout sensitivity
Frequency Foldback	Reduces f_SW to 20% nominal under overload - prevents inductor saturation and thermal runaway
Low-Dropout Mode	100% duty cycle with active BST refresh - sustains regulation during automotive cold-crank (≤4V input)
External Soft-Start	Capacitor-programmable ramp time - enables precise power sequencing with multiple rails
Synchronization Capability	EN/SYNC pin accepts external clock - eliminates beat frequencies in multi-converter systems

Applications

Automotive Infotainment

ADAS Camera Module

Use Scenario: Powering display controller and audio DSP in head-unit systems with wide battery voltage swing (5V–16V).

IC Role / Device Role / Timing Role: Primary 3.3V/0.6A buck regulator supplying core logic; handles cold-crank transients without dropout.

Use Value: 3.5μA shutdown current preserves battery during ignition-off; 2.3MHz operation minimizes EMI near RF-sensitive components.

Use Scenario: Generating 5V rail for image sensor and ISP in rear-view or surround-view camera ECUs.

IC Role / Device Role / Timing Role: Non-synchronous buck converter with precise POK signaling for safe sensor initialization and error reporting.

Use Value: Programmable POK delay ensures stable 5V before sensor reset release; AEC-Q100 Grade 1 certifies for under-hood temperature range.

Body Control Module (BCM)

Telematics Control Unit (TCU)

Use Scenario: Providing 3.3V supply to CAN transceivers, LIN controllers, and door-lock actuators in centralized BCM.

IC Role / Device Role / Timing Role: High-efficiency step-down regulator supporting intermittent loads (e.g., solenoid pulses) while maintaining low quiescent draw.

Use Value: 60μA operating I_Q meets ISO 16750-2 sleep current requirements; MSOP-10 and QFN-10 variants allow footprint flexibility.

Use Scenario: Delivering regulated 3.3V to cellular modem, GNSS receiver, and secure MCU in connected vehicle TCU.

IC Role / Device Role / Timing Role: Primary power stage with synchronized switching to avoid interference with LTE/GNSS bands.

Use Value: External clock sync (350kHz–2.3MHz) enables deterministic EMI placement; thermal shutdown guards against enclosure overheating.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MPQ2451GQ-AEC1-P	0.5A output, fixed 2.2MHz f_SW, no POKDL or frequency programming	Lacks programmable POK delay and external sync; suited for cost-sensitive, fixed-frequency designs	Select when system does not require soft-start timing control or EMI tuning via frequency adjustment
TPS54332QPWPRQ1	0.6A, 3.5–28V input, 2.5MHz max, integrated soft-start but no POK delay programming	Higher R_DS(on) (320mΩ), no BST refresh for cold-crank, different pinout and compensation scheme	Choose if TI ecosystem compatibility or specific WEBENCH support is required; verify cold-crank margin

Compared with MPQ2454GQ-AEC1-P, MPQ2451GQ-AEC1-P trades programmability for lower cost and smaller solution size, while TPS54332QPWPRQ1 offers TI-specific toolchain integration but lacks cold-crank robustness and POK timing flexibility.

Availability

MPQ2454GQ-AEC1-P is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and body control modules requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.

Supply support for MPQ2454GQ-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 design centers in the US, China, and Taiwan.

The MPQ2454 belongs to MPS's automotive-grade DC/DC converter product line, engineered specifically for harsh-environment automotive subsystems requiring AEC-Q100 qualification, cold-crank resilience, and low-quiescent-power operation.

FAQ

What is the minimum input voltage required for MPQ2454GQ-AEC1-P to regulate 3.3V output at full 0.6A load?

At 1MHz switching frequency and 0.6A load, the MPQ2454GQ-AEC1-P maintains regulation within ±5% of 3.3V with as low as ~3.15V input, enabled by its low-dropout mode and active BST capacitor refresh. This meets automotive cold-crank requirements per ISO 16750-2.

Can MPQ2454GQ-AEC1-P synchronize to an external clock while in shutdown mode?

No. Synchronization is only active when EN/SYNC voltage exceeds 1.8V and the device is enabled. During shutdown (EN < 1V), all internal circuitry-including the sync comparator-is disabled, and the part draws only 3.5μA.

How is the POK delay time calculated for MPQ2454GQ-AEC1-P?

The POK delay is set by a capacitor (C_POKDL) from POKDL to GND using t_DL = (C_POKDL × 1.2V) / 1.8μA. For example, a 100nF capacitor yields ~67ms delay. The internal 1.2V threshold and 1.8μA current source are production-tested parameters.

Does MPQ2454GQ-AEC1-P require an external bootstrap diode?

An external bootstrap diode (e.g., 1N4148) is recommended for high-duty-cycle (>65%) or high-frequency (>2MHz) operation to reduce quiescent current and improve light-load efficiency. It is optional for typical 3.3V/5V outputs at ≤1MHz but improves cold-crank reliability.

What is the maximum allowable output capacitance for stable operation with MPQ2454GQ-AEC1-P?

No hard upper limit exists, but stability depends on ESR and ESL. Ceramic capacitors up to 100μF are routinely used. For >47μF, parallel small-value ceramics (e.g., 100nF + 10μF) are advised to maintain high-frequency bypassing. Internal compensation ensures stability with 10μF–47μF ceramic output caps.

Is the MPQ2454GQ-AEC1-P pin-compatible with the non-AEC version MPQ2454GQ-P?

Yes - MPQ2454GQ-AEC1-P shares identical pinout, package dimensions, and electrical specifications with MPQ2454GQ-P. The AEC1 variant adds automotive qualification (Grade 1, -40°C to +125°C), enhanced test screening, and certified traceability, with no functional or mechanical differences.

MPQ2454GQ-AEC1-P Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: -

Package/Case:: 10-VFDFN 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):: 3.3V

Voltage - Input (Max):: 36V

Voltage - Output (Min/Fixed):: 2.9V

Voltage - Output (Max):: 36V

Current - Output:: 600mA

Frequency - Switching:: 2.3MHz

Synchronous Rectifier:: No

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

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 10-QFN (3x3)

MPQ2454GQ-AEC1-P FAQ

1.How can I place an order for MPQ2454GQ-AEC1-P through Aetrix?

Please submit a Request for Quotation (RFQ) for MPQ2454GQ-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 MPQ2454GQ-AEC1-P reliable?

The price and inventory of MPQ2454GQ-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 MPQ2454GQ-AEC1-P is usually 5 days.

3.What payment methods are accepted for MPQ2454GQ-AEC1-P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ2454GQ-AEC1-P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MPQ2454GQ-AEC1-P?

MPQ2454GQ-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MPQ2454GQ-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 MPQ2454GQ-AEC1-P?

For technical support, including MPQ2454GQ-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ2454GQ-AEC1-P requirements.

6.How does Aetrix verify that MPQ2454GQ-AEC1-P is sourced from the original manufacturer or authorized distributors?

All MPQ2454GQ-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 MPQ2454GQ-AEC1-P meets industry standards.

7.What is the process for return or replacement of MPQ2454GQ-AEC1-P?

All MPQ2454GQ-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ2454GQ-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 MPQ2454GQ-AEC1-P part is unused and in its original packaging.

Return procedure for MPQ2454GQ-AEC1-P:

1.Submit a request within 90 days.

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

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