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

Monolithic Power Systems Inc. MPQ4432GLE-AEC1-P

Name: MPQ4432GLE-AEC1-P
Brand: Monolithic Power Systems Inc.
SKU: MPQ4432GLE-AEC1-P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MPQ4432GLE-AEC1-P

Manufacturer:: Monolithic Power Systems Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 16-VQFN

Datasheet:: MPQ4432GLE-AEC1-P.pdf

Description:: IC REG 2.2A 16QFN

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Product details

Overview

MPQ4432GLE-AEC1-P from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified synchronous step-down DC/DC converter delivering up to 2.2A continuous output current, operating from 3.3V–36V input, with programmable switching frequency (350kHz–2.5MHz), integrated 90mΩ high-side and 40mΩ low-side MOSFETs, and 10μA sleep-mode quiescent current. It serves as a primary power supply for automotive infotainment and ADAS domain controllers requiring cold-crank resilience and CISPR-25 Class 5 EMI compliance.

For engineers reviewing the MPQ4432GLE-AEC1-P datasheet, MPQ4432GLE-AEC1-P pinout, MPQ4432GLE-AEC1-P application, or MPQ4432GLE-AEC1-P equivalent, key selection criteria include its wettable-flank QFN-16 package for automated optical inspection, valley-current OCP with hiccup protection, selectable forced CCM/AAM mode, low-dropout operation during 4.5V cold-crank, and PG signal with ±10% output voltage monitoring.

Technical Context

The MPQ4432GLE-AEC1-P implements current-mode PWM control with internal error amplifier, programmable soft-start, and dual-mode operation: forced continuous conduction mode (CCM) for fixed-frequency ripple control, and advanced asynchronous mode (AAM) for light-load efficiency scaling via frequency reduction. Its valley-current over-current protection uses real-time inductor current sensing at the low-side switch node.

It integrates a 5V internal VCC regulator powered from VIN or optionally from external BIAS (5V–18V), supports external clock synchronization with in-phase/180° phase selection via PHASE pin, and features thermal shutdown at 170°C with 20°C hysteresis. The device maintains regulation down to 4.5V input (cold-crank) using low-dropout mode and achieves CISPR-25 Class 5 radiated/conducted EMI performance with standard layout and EMI filters.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	3.3V to 36V - supports full automotive battery range including cold-crank (≥4.5V) and load-dump transients.
Output Current	2.2A continuous - sufficient for powering microcontrollers, sensors, and communication ICs in automotive ECUs.
Quiescent Current	10μA in sleep mode - enables >1-year battery standby in always-on vehicle modules without drain.
Switching Frequency	350kHz to 2.5MHz - adjustable via external resistor or sync clock; avoids AM radio band and enables compact magnetics.
Feedback Reference	0.800V ±2% - enables precise output regulation; fixed versions offer 3.3V/3.8V/5V outputs with ±2.5% accuracy.
Thermal Shutdown	170°C with 20°C hysteresis - protects against sustained overload or poor PCB thermal design without latch-off.
OCP Method	Valley-current detection with hiccup mode - limits peak inductor current to ~3.8A and reduces average fault current during short-circuit.

Pinout & Package

MPQ4432GLE-AEC1-P is housed in a wettable-flank QFN-16 package (3mm × 4mm, 0.5mm pitch), enabling automated optical solder-joint inspection for automotive production. The exposed thermal pad (Pin 4/9 PGND) must be connected to a large copper pour with ≥6 thermal vias for thermal reliability under 2.2A load.

Pin/Terminal	Circuit Role	Design Meaning
1 PHASE	Synchronization phase select	Drives high for in-phase sync with external clock; drives low for 180° out-of-phase; tie to GND if unused.
2 VIN	Main power input	Supplies internal control circuitry and high-side switch; requires local 10µF ceramic decoupling to PGND.
3,10 SW	Switch node	Connects internally to both pins; carries high di/dt switching waveform; must be routed with minimal loop area.
4,9 PGND	Power ground	Reference for high-current paths; separate from AGND; requires dedicated low-impedance copper pour and vias.
5 EN	Enable control	Digital input with 0.9–1.2V rising threshold; pull below 0.4V to shut down; do not float.
6 SYNC	Sync mode / CCM-AAM select	High (>1.8V) forces CCM; low (<0.4V) or floating enables AAM; also accepts external 350kHz–2.5MHz clock.
7 PG	Power good open-drain	Pulled high when VOUT is within ±10% of nominal; 30µs delay on rise, 50µs on fall; requires external pull-up.
8 BIAS	External bias supply	Accepts 5V–18V external source to reduce power dissipation and improve efficiency; float or ground if unused.
11 BST	Bootstrap supply	Connected via 0.1µF ceramic capacitor to SW; supplies gate drive for high-side MOSFET.
12 VCC	Internal bias rail	5V regulated output; requires ≥1µF ceramic decoupling to AGND; powers gate drivers and logic.
13 AGND	Analog ground	Reference for FB, SS, and error amplifier; must be star-connected to PGND at single point near IC.
14 SS	Soft-start timing	10µA current source charges external capacitor; sets ramp time; floating enables 0.7ms internal soft-start.
15 FB	Feedback input	0.800V reference; for adjustable version, connect resistor divider from VOUT to AGND; for fixed version, tie directly to VOUT.
16 FREQ	Frequency programming	Resistor to GND sets switching frequency: 180kΩ = 475kHz, 82kΩ = 1MHz, 27kΩ = 2.5MHz.

Key Features

Feature	Design Value
Wettable flank QFN-16	Enables AOI-compatible solder-joint inspection for zero-defect automotive manufacturing.
AEC-Q100 Grade 1 qualification	Rated for −40°C to +125°C junction temperature - validated for engine bay and front-end ADAS applications.
Advanced Asynchronous Mode (AAM)	Reduces light-load quiescent current to 10μA by dynamically scaling switching frequency below 350kHz.
Low-dropout cold-crank mode	Maintains regulation down to 4.5V input with duty cycle extended to 95% - critical for automotive start-stop systems.
CISPR-25 Class 5 EMI compliance	Validated with standard layout and EMI filters - eliminates need for custom shielding in infotainment head units.

Applications

Automotive Infotainment Head Unit

ADAS Camera Module Power Supply

Use Scenario: Powers SoC, display driver, and audio codec in 12V vehicle infotainment system with start-stop capability.

IC Role / Device Role / Timing Role: Primary 5V/2.2A buck converter supplying core logic rails; manages cold-crank dip via low-dropout mode and monitors output health via PG signal.

Use Value: Enables uninterrupted operation during engine restart (4.5V–16V transients) while maintaining <10μA quiescent draw in sleep mode for battery preservation.

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

IC Role / Device Role / Timing Role: High-efficiency synchronous buck regulating clean 3.3V from noisy 12V battery; uses AAM to minimize heat generation in sealed camera housing.

Use Value: Achieves >92% efficiency at 500mA load and meets CISPR-25 Class 5 radiated emissions without ferrite beads or shielding.

Body Control Module (BCM)

Telematics Control Unit (TCU)

Use Scenario: Generates 3.8V rail for CAN FD transceivers and microcontroller in centralized body electronics gateway.

IC Role / Device Role / Timing Role: Fixed-output buck converter with integrated OCP and thermal shutdown; synchronized to system clock via SYNC pin to reduce beat frequencies.

Use Value: Eliminates external feedback resistors and provides robust short-circuit protection with hiccup recovery - reducing BOM count and field failure risk.

Use Scenario: Powers LTE modem, GNSS receiver, and secure MCU in cellular-connected vehicle telematics unit.

IC Role / Device Role / Timing Role: Dual-rail capable (via adjustable FB or fixed 3.3V/5V variants); uses BIAS pin to derive VCC from 5V output, improving overall system efficiency by 3%.

Use Value: Reduces thermal load in thermally constrained TCU enclosure while supporting rapid enable/disable sequencing via EN pin.

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
MPQ4433GLE-AEC1-P	Higher 3A output current; same 3.3V–36V input; identical pinout and feature set.	Required where peak load exceeds 2.2A (e.g., multi-radio TCU with LTE+5G+GNSS).	Select when higher current headroom is needed without redesigning layout or control firmware.
TPS62933QRGTRQ1	3A output; 3V–36V input; lower 2.5μA IQ; no wettable flank; different pinout (12-pin WQFN).	Preferred for ultra-low-IQ designs where optical inspection is not mandated and board space allows re-layout.	Choose only if IQ <3μA is mandatory and AEC-Q100 Grade 1 + wettable flank are secondary requirements.

Compared with MPQ4432GLE-AEC1-P, MPQ4433GLE-AEC1-P offers direct pin-compatible upgrade path for higher current, while TPS62933QRGTRQ1 trades wettable flank and automotive layout compatibility for marginally lower IQ - making MPQ4432GLE-AEC1-P optimal for cost-sensitive, volume automotive designs requiring zero-defect manufacturability.

Availability

MPQ4432GLE-AEC1-P is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MPQ4432GLE-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, and global manufacturing partnerships.

The MPQ4432 belongs to MPS's automotive-grade DC/DC converter product line, engineered specifically for AEC-Q100-compliant power delivery in harsh-temperature, high-reliability vehicle subsystems - emphasizing EMI robustness, cold-crank resilience, and zero-defect manufacturability.

FAQ

What is the purpose of the BIAS pin, and how should it be used?

The BIAS pin accepts an external 5V–18V supply to power the internal 5V VCC regulator, bypassing VIN-derived regulation. When connected to a clean, efficient rail like the output of a preceding converter, it reduces power dissipation by ~150mW at full load and improves overall system efficiency. If unused, BIAS must be floated or tied to ground - leaving it unconnected risks undefined behavior.

How does the MPQ4432GLE-AEC1-P handle cold-crank conditions below 6V input?

During cold-crank (input dipping to 4.5V), the MPQ4432GLE-AEC1-P enters low-dropout mode, extending duty cycle up to 95% to maintain regulation. Its valley-current OCP remains active, and the 80ns minimum on-time ensures controllability even at extreme duty cycles. No external components are required - this behavior is fully integrated and validated per AEC-Q100 transient test profiles.

Can the MPQ4432GLE-AEC1-P be synchronized to an external clock, and what phase options are supported?

Yes - the SYNC pin accepts a 350kHz–2.5MHz logic-level clock. The PHASE pin selects synchronization phase: driven high for in-phase alignment, low for 180° out-of-phase. This enables noise spreading across multiple converters in dense automotive PCBs. If PHASE is left unconnected, default behavior is in-phase sync.

What is the function of the PG (power good) signal, and what are its timing characteristics?

PG is an open-drain output that goes high when VOUT reaches and remains within ±10% of its nominal value. It asserts after a 30µs deglitch timer on power-up and deasserts after a 50µs timer on fault. PG requires an external pull-up resistor (typically 100kΩ to VCC) and is used by downstream logic to sequence power domains or trigger system reset.

Is the MPQ4432GLE-AEC1-P compatible with both adjustable and fixed-output configurations?

Yes - the base MPQ4432 supports adjustable output via FB pin and external resistor divider. Fixed-output variants (e.g., MPQ4432GLE-38-AEC1-P for 3.8V) tie FB directly to VOUT internally. The MPQ4432GLE-AEC1-P itself is the wettable-flank, AEC-Q100 Grade 1 version of the base part and supports both configurations depending on external circuitry.

How does Advanced Asynchronous Mode (AAM) improve light-load efficiency?

AAM reduces switching frequency proportionally to load - from 475kHz down to <100kHz - minimizing gate-drive and switching losses. At no load, it enters sleep mode with 10μA IQ by blocking the internal oscillator and skipping pulses. Unlike burst mode, AAM maintains output voltage regulation without audible noise or increased ripple, verified across −40°C to +125°C.

MPQ4432GLE-AEC1-P Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: *

Package/Case:: 16-VQFN

Packaging:: Tape & Reel (TR)

Product Status:: Active

Function:: -

Output Configuration:: -

Topology:: -

Output Type:: -

Number of Outputs:: -

Voltage - Input (Min):: -

Voltage - Input (Max):: -

Voltage - Output (Min/Fixed):: -

Voltage - Output (Max):: -

Current - Output:: -

Frequency - Switching:: -

Synchronous Rectifier:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount, Wettable Flank

Supplier Device Package:: 16-QFN (3x4)

MPQ4432GLE-AEC1-P FAQ

1.How can I place an order for MPQ4432GLE-AEC1-P through Aetrix?

Please submit a Request for Quotation (RFQ) for MPQ4432GLE-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 MPQ4432GLE-AEC1-P reliable?

The price and inventory of MPQ4432GLE-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 MPQ4432GLE-AEC1-P is usually 5 days.

3.What payment methods are accepted for MPQ4432GLE-AEC1-P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4432GLE-AEC1-P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MPQ4432GLE-AEC1-P?

MPQ4432GLE-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MPQ4432GLE-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 MPQ4432GLE-AEC1-P?

For technical support, including MPQ4432GLE-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4432GLE-AEC1-P requirements.

6.How does Aetrix verify that MPQ4432GLE-AEC1-P is sourced from the original manufacturer or authorized distributors?

All MPQ4432GLE-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 MPQ4432GLE-AEC1-P meets industry standards.

7.What is the process for return or replacement of MPQ4432GLE-AEC1-P?

All MPQ4432GLE-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4432GLE-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 MPQ4432GLE-AEC1-P part is unused and in its original packaging.

Return procedure for MPQ4432GLE-AEC1-P:

1.Submit a request within 90 days.

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

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