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

Monolithic Power Systems Inc. MPQ4415AGQBE-AEC1-Z

Name: MPQ4415AGQBE-AEC1-Z
Brand: Monolithic Power Systems Inc.
SKU: MPQ4415AGQBE-AEC1-Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MPQ4415AGQBE-AEC1-Z

Manufacturer:: Monolithic Power Systems Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 13-PowerVQFN

Datasheet:: MPQ4415AGQBE-AEC1-Z.pdf

Description:: IC REG BUCK ADJ 1.5A 13QFN

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Product details

Overview

MPQ4415AGQBE-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, synchronous step-down DC/DC converter delivering 1.5A continuous output current with 4V–36V input range, 2.2MHz fixed switching frequency, and integrated 90mΩ/50mΩ MOSFETs. It features power-good indication, valley-current OCP with hiccup mode, thermal shutdown, and internal soft-start - deployed in automotive infotainment power rails and ADAS camera modules.

For engineers reviewing the MPQ4415AGQBE-AEC1-Z datasheet, MPQ4415AGQBE-AEC1-Z pinout, MPQ4415AGQBE-AEC1-Z application, or MPQ4415AGQBE-AEC1-Z equivalent, key selection criteria include its wettable-flank QFN-13 package for automated optical inspection, CISPR25 Class 5 EMI compliance, forced CCM operation across load range, and EN/SYNC dual-function pin supporting both enable control and external clock synchronization.

Technical Context

The MPQ4415AGQBE-AEC1-Z employs peak-current-mode control with internal 0.807V reference and optimized compensation network, enabling stable regulation without external loop components. Its current-sense architecture uses valley-current detection during overload to trigger frequency foldback and hiccup recovery - critical for sustained short-circuit resilience in automotive environments.

It integrates a bootstrap regulator with 2.2V UVLO and dedicated charging path from VIN to BST, supporting high-duty-cycle operation up to ~92%. The internal 4.9V VCC regulator powers all circuitry across full input range, while PG open-drain output provides precise 88% V_FB threshold with 90μs delay for system sequencing.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	4V to 36V - supports wide automotive battery transients including cold-crank (4.5V) and load-dump (36V).
Output Current	1.5A continuous - sufficient for powering SoC cores, image sensors, or CAN transceivers in compact modules.
Switching Frequency	2.2MHz nominal, syncable 450kHz–2.2MHz - enables use of small 2.2μH inductors and avoids AM radio band.
Feedback Reference	0.807V ±13mV - sets output voltage via resistor divider; tolerance directly impacts V_OUT accuracy.
Thermal Shutdown	170°C with 30°C hysteresis - protects against sustained overloads while allowing safe restart at 140°C.
PG Threshold Accuracy	±5% hysteresis around 88% V_FB - ensures reliable power-rail monitoring for microcontroller reset sequencing.
OCP Trigger Level	2.4A–6.0A valley-current limit - prevents MOSFET overstress during line/load transients without false triggering.

Pinout & Package

MPQ4415AGQBE-AEC1-Z is housed in a wettable-flank QFN-13 package (2.5mm × 3mm, 0.5mm pitch), enabling solder-joint inspection and enhanced thermal performance via exposed PGND pad.

Pin/Terminal	Circuit Role	Design Meaning
1,2 IN	Main power input	Accepts 4V–36V; requires low-ESR ceramic decoupling placed adjacent to pins with multiple vias to PGND.
3 NC	No connection	Must remain unconnected; no internal bond wire or circuitry attached.
4 PG	Power-good indicator	Open-drain output pulled high when V_OUT ≥ 88% × V_FB; used for system enable sequencing.
5 EN/SYNC	Enable & clock sync input	Pull high ≥1.45V to enable; apply 450kHz–2.2MHz square wave to synchronize switching.
6 FB	Voltage feedback node	Connects to resistor divider tap; internal 0.807V reference compares against this node to regulate V_OUT.
7 VCC	Bias supply rail	Internally regulated 4.9V output; requires 0.1μF–0.22μF ceramic capacitor to AGND.
8 AGND	Analog ground reference	Reference for error amplifier and logic; internally tied to PGND - no external connection needed.
9 SW	Switch node	Drives external inductor; high di/dt path requiring wide copper trace and minimized loop area.
10 BST	Bootstrap supply	Connects to SW via 0.1μF capacitor and 20Ω series resistor to power high-side gate driver.
11–13 PGND	Power ground return	High-current return path for MOSFETs and inductor; must be connected to large copper pour with multiple thermal vias.

Key Features

Feature	Design Value
Wettable flank QFN-13	Enables automated optical inspection (AOI) of solder joints - critical for automotive AEC-Q100 production traceability.
Forced Continuous Conduction Mode (CCM)	Maintains fixed 2.2MHz switching from no-load to full 1.5A, minimizing light-load output ripple and EMI variability.
CISPR25 Class 5 compliance	Meets stringent automotive EMI limits without external filters - reduces BOM cost and PCB area in infotainment systems.
Valley-current OCP with hiccup recovery	Detects inductor current collapse during short-circuit, then enters low-duty-cycle restart mode to limit average power dissipation.
Internal soft-start (1.5ms)	Prevents output overshoot and inrush current during startup - eliminates need for external SS capacitor in space-constrained designs.

Applications

Automotive Infotainment

ADAS Camera Modules

Use Scenario: Powering display controllers and audio DSPs in head-unit systems subject to 4V–18V battery variation and load-dump transients.

IC Role / Device Role / Timing Role: Primary 3.3V/1.8V point-of-load regulator with PG signaling for MCU reset coordination and thermal fault reporting.

Use Value: AEC-Q100 Grade 1 qualification ensures operation from −40°C to +125°C ambient, while 36V max input withstands ISO 7637-2 pulse 5a.

Use Scenario: Supplying image sensor and ISP in rear-view or surround-view cameras mounted near vehicle exterior.

IC Role / Device Role / Timing Role: Compact 2.2MHz buck converter enabling small 2.2μH inductors and minimal footprint on tight camera PCBs.

Use Value: Wettable flank package supports AOI for zero-defect manufacturing; CISPR25 Class 5 compliance avoids radiated emissions failures in EMC testing.

Industrial Telematics Gateways

Medical Portable Diagnostics

Use Scenario: Providing isolated 5V and 3.3V rails for LTE modems, GNSS receivers, and CAN FD interfaces in fleet management units.

IC Role / Device Role / Timing Role: High-efficiency synchronous buck with EN/SYNC pin enabling coordinated power-up across multiple rails using single master clock.

Use Value: 450kHz–2.2MHz sync range allows EMI spreading across multiple converters; valley-current OCP prevents latch-up during modem burst transmission.

Use Scenario: Powering FPGA-based signal processing and OLED displays in handheld ultrasound or glucose monitors with battery backup.

IC Role / Device Role / Timing Role: Low-quiescent 0.8mA regulator maintaining regulated output during battery brownouts down to 4V.

Use Value: Internal 0.807V reference and tight FB accuracy (±1.6%) ensure consistent sensor biasing and display brightness across temperature.

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
LM61480QRNXTQ1	4.5V–36V input, 8A output, 2.1MHz, no wettable flank, higher IQ (15μA shutdown)	Targets higher-power ADAS ECUs; lacks PG pin and valley-current OCP	Select when >3A output or spread-spectrum EMI reduction is required; not drop-in due to pinout and feature set mismatch.
TPS62903-Q1	3V–18V input, 3A output, 1.8MHz, QFN-16, AEC-Q100 Grade 1, no BST pin	Suitable for lower-voltage domains (e.g., 12V→3.3V); lacks 36V capability and wettable flank	Prefer for cost-sensitive 12V systems where 36V tolerance is unnecessary; requires redesign of BST and feedback networks.

Compared with LM61480QRNXTQ1 and TPS62903-Q1, MPQ4415AGQBE-AEC1-Z uniquely combines 36V operation, wettable flank packaging, and valley-current OCP in a 13-pin QFN - making it optimal for space-constrained, high-reliability 4V–36V automotive loads where PG signaling and EMI certification are mandatory.

Availability

MPQ4415AGQBE-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and industrial telematics gateways requiring stable component supply under AEC-Q100 Grade 1 qualification.

Supply support for MPQ4415AGQBE-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 design centers in the US, China, and Taiwan.

The MPQ4415A product line delivers compact, AEC-Q100-qualified DC/DC converters targeting automotive subsystems requiring high efficiency, EMI robustness, and extended temperature operation - especially camera, radar, and infotainment power rails.

FAQ

What is the purpose of the BST pin and how should it be configured?

The BST (bootstrap) pin supplies gate drive voltage to the internal high-side MOSFET. It must be connected to the SW node through a 0.1μF ceramic capacitor and a 20Ω series resistor to reduce voltage spikes. This configuration ensures reliable high-side switching across the full duty cycle range, especially above 65%, and is mandatory for proper operation per the datasheet layout guidelines.

Does MPQ4415AGQBE-AEC1-Z support external synchronization, and what are the timing requirements?

Yes, the EN/SYNC pin accepts external clock signals from 450kHz to 2.2MHz. The input must be a clean square wave with pulse width <350ns and off-time <1.9μs. Synchronization locks the internal oscillator's rising edge to the external clock, enabling deterministic EMI reduction and multi-rail phase alignment in complex power systems.

How does the power-good (PG) signal behave during startup and fault conditions?

PG remains low until V_FB reaches 88% of the internal 0.807V reference, then asserts high after a 90μs delay. It pulls low again if V_FB drops to 83% V_FB, during thermal shutdown, or when EN/SYNC is deasserted. This behavior enables precise power-rail sequencing and fault detection in safety-critical automotive applications.

What distinguishes the "-AEC1" and "-AEC1-Z" suffixes in the part number?

The "-AEC1" suffix denotes AEC-Q100 Grade 1 qualification (−40°C to +125°C junction). The "-Z" suffix indicates tape-and-reel packaging (standard for automated SMT assembly). MPQ4415AGQBE-AEC1-Z therefore specifies the wettable-flank QFN-13 variant in AEC-Q100-compliant tape-and-reel format - not a functional difference, but a packaging and compliance designation.

Can MPQ4415AGQBE-AEC1-Z operate in discontinuous conduction mode (DCM)?

No - it operates exclusively in forced continuous conduction mode (CCM) across all load conditions. This eliminates mode transitions that cause variable-frequency operation and associated EMI peaks, ensuring predictable 2.2MHz switching behavior from zero to full 1.5A load - a key advantage for EMI-sensitive automotive applications.

What is the recommended input capacitor configuration for optimal transient response?

Use a parallel combination: a bulk 4.7μF–10μF X5R/X7R ceramic capacitor placed near the IN pin, plus a 0.1μF 0603 ceramic capacitor located directly between IN and PGND with minimal trace length. This dual-capacitor approach handles both low-frequency ripple and high-frequency switching noise, reducing input voltage sag during load steps by >40% versus single-capacitor solutions.

Is an external bootstrap diode required, and when does it improve efficiency?

An external bootstrap diode (e.g., IN4148) is optional but recommended when duty cycle exceeds 65%, such as in 12V→5V or 24V→3.3V conversions. It bypasses the internal bootstrap regulator's PMOS pass transistor, reducing conduction loss and improving full-load efficiency by 0.8–1.2% - particularly valuable in thermally constrained automotive enclosures.

MPQ4415AGQBE-AEC1-Z Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: MPQ

Package/Case:: 13-PowerVQFN

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):: 4V

Voltage - Input (Max):: 36V

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

Voltage - Output (Max):: 30.6V

Current - Output:: 1.5A

Frequency - Switching:: 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:: 13-QFN (2.5x3)

MPQ4415AGQBE-AEC1-Z FAQ

1.How can I place an order for MPQ4415AGQBE-AEC1-Z through Aetrix?

Please submit a Request for Quotation (RFQ) for MPQ4415AGQBE-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 MPQ4415AGQBE-AEC1-Z reliable?

The price and inventory of MPQ4415AGQBE-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 MPQ4415AGQBE-AEC1-Z is usually 5 days.

3.What payment methods are accepted for MPQ4415AGQBE-AEC1-Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4415AGQBE-AEC1-Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MPQ4415AGQBE-AEC1-Z?

MPQ4415AGQBE-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MPQ4415AGQBE-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 MPQ4415AGQBE-AEC1-Z?

For technical support, including MPQ4415AGQBE-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4415AGQBE-AEC1-Z requirements.

6.How does Aetrix verify that MPQ4415AGQBE-AEC1-Z is sourced from the original manufacturer or authorized distributors?

All MPQ4415AGQBE-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 MPQ4415AGQBE-AEC1-Z meets industry standards.

7.What is the process for return or replacement of MPQ4415AGQBE-AEC1-Z?

All MPQ4415AGQBE-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4415AGQBE-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 MPQ4415AGQBE-AEC1-Z part is unused and in its original packaging.

Return procedure for MPQ4415AGQBE-AEC1-Z:

1.Submit a request within 90 days.

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

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