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

Monolithic Power Systems Inc. MPQ2454GH-AEC1-Z

Name: MPQ2454GH-AEC1-Z
Brand: Monolithic Power Systems Inc.
SKU: MPQ2454GH-AEC1-Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MPQ2454GH-AEC1-Z

Manufacturer:: Monolithic Power Systems Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad

Datasheet:: MPQ2454GH-AEC1-Z.pdf

Description:: IC REG BUCK ADJ 600MA 10MSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

MPQ2454GH-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified 36V, 0.6A synchronous step-down DC/DC converter with integrated 200mΩ high-side MOSFET, programmable 350kHz–2.3MHz switching frequency, 0.8V feedback reference, and open-drain power-good (POK) output. It operates from 3.3V to 36V input, delivers >90% efficiency across load range, and supports automotive cold-crank via 100% duty-cycle low-dropout mode.

For engineers reviewing the MPQ2454GH-AEC1-Z datasheet, MPQ2454GH-AEC1-Z pinout, MPQ2454GH-AEC1-Z application, or MPQ2454GH-AEC1-Z equivalent, key selection criteria include AEC-Q100 qualification, 3.5μA shutdown current, external soft-start control, POK delay programming, and thermal shutdown at 170°C - all critical for automotive body electronics, ADAS power rails, and industrial battery-backed systems.

Technical Context

The MPQ2454GH-AEC1-Z employs current-mode control with cycle-by-cycle peak current limiting and frequency foldback during start-up or short-circuit to prevent inductor current runaway. Its internal error amplifier uses a fixed 0.8V reference and drives a COMP node that sets switch peak current.

It integrates a 3.5V internal regulator powered from VIN, a 5V bootstrap driver for the high-side MOSFET, and a dedicated POK delay circuit controlled by an external capacitor on POKDL. Thermal shutdown (170°C trip, 145°C hysteresis) and VIN UVLO (2.9V rising / 2.65V falling) provide fault protection without external components.

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 ~3.3V) and load-dump transients.
Output Current	0.6A continuous - sufficient for powering microcontrollers, sensors, and CAN transceivers in automotive ECUs.
Switching Frequency	350kHz to 2.3MHz (programmable via FREQ pin resistor) - enables compact magnetics and EMI optimization in space-constrained layouts.
Feedback Reference	0.8V ±2% - allows precise output regulation with standard resistor dividers; enables 3.3V, 5V, or custom rail generation.
Quiescent Current	60μA operating / 3.5μA shutdown - extends battery life in always-on vehicle modules like telematics and alarm systems.
Power Good Threshold	±10% output window with 4.5% hysteresis - provides reliable system reset signaling without external comparators.
Thermal Shutdown	170°C trip with 25°C hysteresis - ensures safe operation under sustained overload or poor PCB thermal design.

Pinout & Package

MPQ2454GH-AEC1-Z is packaged in MSOP-10 EP (exposed pad), with thermal pad soldered to GND plane for optimal heat dissipation in automotive environments.

Pin/Terminal	Circuit Role	Design Meaning
1 SW	Switch Node	Drives external inductor; requires low-VF Schottky diode to GND for spike suppression and efficient freewheeling.
2 VIN	Input Supply	Primary power input (3.3–36V); must be decoupled with low-ESR ceramic capacitor placed adjacent to pin.
3 GND	Ground Reference	System ground return; exposed pad must be connected to GND plane to meet thermal resistance spec (θJA = 55°C/W).
4 SS	Soft-Start Control	Sources 1.8μA to external capacitor; sets ramp time for controlled VOUT rise and inrush current limiting.
5 FB	Feedback Input	Monitors output via resistor divider; regulates VOUT to 0.8V reference - determines final output voltage accuracy.
6 POKDL	POK Delay Programming	Accepts capacitor to GND; programs POK assertion delay (e.g., 100nF ≈ 100ms) for sequencing compliance.
7 POK	Open-Drain Power Good	Signals VOUT within ±10%; requires external pull-up (≤5V) - used for MCU reset, BMS enable, or system boot validation.
8 FREQ	Frequency Set	Resistor-to-GND sets fSW (e.g., 49.9kΩ → 1MHz); enables EMI tuning and layout-driven frequency selection.
9 EN/SYNC	Enable & Clock Sync	Logic-controlled on/off (1V low / 1.8V high); also accepts 350kHz–2.3MHz external clock for synchronized multi-rail systems.
10 BST	Bootstrap Supply	Charges external BST capacitor (VIN–SW); enables high-side gate drive - requires 0.1μF ceramic between BST and SW.

Key Features

Feature	Design Value
Internal 200mΩ High-Side MOSFET	Eliminates external switch; reduces BOM count and PCB area while maintaining >90% efficiency at 0.6A.
Programmable POK Delay	Capacitor-based timing on POKDL pin enables precise power-rail sequencing - critical for SoC/FPGA boot order compliance.
Low-Dropout Cold-Crank Mode	Supports 100% duty cycle down to VIN ≈ 3.3V (at light load), enabling uninterrupted operation during engine cranking.
Frequency Foldback Protection	Reduces fSW under low-VOUT or short-circuit conditions - prevents inductor saturation and thermal runaway during faults.
AEC-Q100 Grade 1 Qualification	Validated for -40°C to +125°C junction operation with HTOL, TC, and ESD testing - meets automotive functional safety requirements.

Applications

Automotive Body Control Module (BCM)

ADAS Camera Power Supply

Use Scenario: Powers microcontroller, LIN transceivers, and LED drivers in door modules and lighting controllers.

IC Role / Device Role / Timing Role: Primary 5V/3.3V step-down regulator with POK signaling for MCU reset coordination.

Use Value: 3.5μA shutdown current extends battery life during vehicle sleep mode; AEC-Q100 Grade 1 ensures reliability over 15-year vehicle lifecycle.

Use Scenario: Supplies clean 3.3V to image sensor and ISP in rear-view or surround-view camera systems.

IC Role / Device Role / Timing Role: High-efficiency, low-noise buck converter with programmable soft-start to avoid sensor initialization glitches.

Use Value: 60μA quiescent current minimizes standby drain; 2.3MHz operation enables small 2.2μH inductors and reduced EMI near sensitive analog video paths.

Industrial Battery-Backed Telematics

Automotive Infotainment Core Rail

Use Scenario: Provides regulated 3.3V from 12V vehicle bus to GPS/GSM module in fleet tracking units.

IC Role / Device Role / Timing Role: Input-wide buck regulator with cold-crank support and POK delay for graceful modem wake-up.

Use Value: 3.3V–36V input range handles alternator ripple and jump-start transients; POKDL capacitor ensures modem powers up only after stable VOUT.

Use Scenario: Generates 1.1V core supply for infotainment SoC (e.g., NXP i.MX8) from 12V battery rail.

IC Role / Device Role / Timing Role: Pre-regulator feeding downstream LDOs or POL converters; synchronized via EN/SYNC pin to reduce system EMI.

Use Value: 350kHz–2.3MHz synchronization capability aligns switching edges across multiple rails - simplifies EMI filter design and improves conducted noise margin.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MPQ4420AGQ-AEC1-Z	2A output, 40V max input, QFN-12 package - higher current but larger footprint and no POKDL pin.	Lacks programmable POK delay; suited for higher-power loads but not precision sequencing-critical rails.	Select when >0.6A output or higher input voltage margin is required; avoid if POK timing control is mandatory.
TPS54340QDDARQ1	3.5A output, 40V input, 3.5μA IQ, but no internal compensation - requires external compensation network.	Needs additional RC components for loop stability; increases design complexity and board area vs. MPQ2454's internal compensation.	Choose for higher current needs where external compensation is acceptable; MPQ2454 offers faster time-to-market with single-resistor frequency set.

Compared with MPQ4420AGQ-AEC1-Z and TPS54340QDDARQ1, the MPQ2454GH-AEC1-Z delivers optimal balance of AEC-Q100 compliance, integrated features (POKDL, internal compensation), and compact MSOP-10 size - making it ideal for cost- and space-sensitive automotive sub-systems requiring precise power sequencing and cold-crank resilience.

Availability

MPQ2454GH-AEC1-Z is available at Aetrix Electronics and suitable for automotive body electronics, ADAS camera modules, and industrial battery-backed telematics requiring stable component supply, AEC-Q100 traceability, and long-term production continuity.

Supply support for MPQ2454GH-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 analog and power ICs, with global manufacturing and quality systems certified to IATF 16949.

The MPQ2454 belongs to MPS's automotive-grade DC/DC converter product line, designed specifically for harsh-environment power conversion in passenger vehicles, commercial trucks, and off-road equipment - emphasizing AEC-Q100 reliability, wide input range, and minimal external component count.

FAQ

What is the maximum allowable input voltage for MPQ2454GH-AEC1-Z?

The absolute maximum VIN rating is 40V, but the recommended operating range is 3.3V to 36V per datasheet specifications. Operation above 36V risks exceeding internal MOSFET breakdown limits and invalidates AEC-Q100 qualification margins. For transient-heavy automotive environments, use TVS clamping at VIN to limit spikes to ≤40V.

Does MPQ2454GH-AEC1-Z require an external bootstrap diode?

No - the device includes an internal bootstrap regulator that charges the BST capacitor from VIN. However, an external Schottky 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.

How is the power-good delay time calculated for POKDL?

Delay time t_DL (ms) = (C_POKDL in nF × 1.2V) / I_POKDL, where I_POKDL = 1.8μA typical. For example, a 100nF capacitor yields ~67ms delay. This timing ensures POK asserts only after output settles, preventing false resets during startup overshoot.

Can MPQ2454GH-AEC1-Z operate with ceramic output capacitors only?

Yes - the device is explicitly characterized for stable operation with ceramic output capacitors due to its internal compensation and current-mode architecture. No additional ESR is required, enabling smaller, lower-ESR, and more reliable output filtering versus tantalum or electrolytic solutions.

What is the minimum inductor value recommended for 2.3MHz operation at 12V→3.3V?

Using the datasheet equation L = V_OUT(V_IN−V_OUT) / (V_IN × f_S × ΔI_L), with ΔI_L = 0.3 × 0.6A = 0.18A, the minimum inductance is ~2.2μH. A 2.2μH or 3.3μH shielded power inductor with ≥1A saturation current is recommended to avoid minimum on-time violation and excessive ripple.

Is the EN/SYNC pin internally pulled down?

Yes - a 1.2MΩ internal resistor connects EN/SYNC to GND, ensuring default shutdown when left floating. This eliminates need for external pull-down resistors in most designs, simplifying layout and reducing component count for automotive systems where pin states must be deterministic at power-up.

How does frequency foldback improve safety during output short-circuit?

During short-circuit, FB voltage collapses, causing the oscillator frequency to drop to ~20% of nominal (e.g., 2.3MHz → ~460kHz). This reduces switching and gate-drive losses, limiting junction temperature rise and preventing thermal runaway - a key safety feature validated under AEC-Q100 stress testing.

MPQ2454GH-AEC1-Z Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: -

Package/Case:: 10-TFSOP, 10-MSOP (0.118", 3.00mm 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):: 3.3V

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-MSOP-EP

MPQ2454GH-AEC1-Z FAQ

1.How can I place an order for MPQ2454GH-AEC1-Z through Aetrix?

Please submit a Request for Quotation (RFQ) for MPQ2454GH-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 MPQ2454GH-AEC1-Z reliable?

The price and inventory of MPQ2454GH-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 MPQ2454GH-AEC1-Z is usually 5 days.

3.What payment methods are accepted for MPQ2454GH-AEC1-Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ2454GH-AEC1-Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MPQ2454GH-AEC1-Z?

MPQ2454GH-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MPQ2454GH-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 MPQ2454GH-AEC1-Z?

For technical support, including MPQ2454GH-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ2454GH-AEC1-Z requirements.

6.How does Aetrix verify that MPQ2454GH-AEC1-Z is sourced from the original manufacturer or authorized distributors?

All MPQ2454GH-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 MPQ2454GH-AEC1-Z meets industry standards.

7.What is the process for return or replacement of MPQ2454GH-AEC1-Z?

All MPQ2454GH-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ2454GH-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 MPQ2454GH-AEC1-Z part is unused and in its original packaging.

Return procedure for MPQ2454GH-AEC1-Z:

1.Submit a request within 90 days.

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

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