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Monolithic Power Systems Inc. MPQ4432GLE-AEC1-Z
- Part No.:
- MPQ4432GLE-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 16-VQFN
- Datasheet:
-
MPQ4432GLE-AEC1-Z.pdf
- Description:
- IC REG 2.2A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,591
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Product details
Overview
MPQ4432GLE-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, synchronous step-down DC/DC converter with integrated 90mΩ high-side and 40mΩ low-side MOSFETs, delivering up to 2.2A output current across a 3.3V–36V input range. It features programmable switching frequency (350kHz–2.5MHz), 10μA sleep-mode quiescent current, and advanced asynchronous mode (AAM) for automotive battery-powered systems requiring cold-crank support and CISPR25 Class 5 EMI compliance.
For engineers reviewing the MPQ4432GLE-AEC1-Z datasheet, MPQ4432GLE-AEC1-Z pinout, MPQ4432GLE-AEC1-Z application, or MPQ4432GLE-AEC1-Z equivalent, key selection criteria include its wettable flank QFN-16 package, valley-current OCP with hiccup protection, low-dropout mode, external clock synchronization capability (in-phase or 180° out-of-phase), and PG indicator with ±10% output voltage monitoring window.
Technical Context
The MPQ4432GLE-AEC1-Z employs current-mode PWM control with internal error amplifier, fixed-frequency peak-current regulation at medium-to-heavy loads, and adaptive frequency scaling in AAM mode to minimize gate-driving and switching losses at light load. Its valley-current over-current protection uses real-time inductor current sensing with hiccup recovery, while thermal shutdown (170°C) and UVLO (2.8V rising threshold, 150mV hysteresis) ensure fault resilience in automotive transients.
It integrates a 5V internal VCC regulator powered from VIN or optionally from an external BIAS supply (5V–18V), enabling higher efficiency when VOUT powers the bias rail. The device supports forced CCM via SYNC pin high-level assertion and selectable soft-start timing via external capacitor on SS pin, with minimum on-time of 80ns enabling high-duty-cycle operation during cold-crank (VIN down to 3.3V).
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 | 2.2A continuous - sustained delivery with integrated MOSFETs eliminates need for external power switches. |
| Quiescent Current | 10μA in sleep mode - enables >1-year battery standby in always-on automotive modules (e.g., telematics, ADAS sensors). |
| Switching Frequency | 350kHz to 2.5MHz - programmable via resistor or external clock; allows EMI optimization and small external component selection. |
| Feedback Reference | 800mV ±2% - precise output regulation; supports adjustable or fixed-output variants (3.3V/3.8V/5V). |
| 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 average short-circuit current to safe level while maintaining self-recovery. |
| Package | QFN-16 (3mm × 4mm) with wettable flanks - enables automated optical solder-joint inspection for automotive production traceability. |
Pinout & Package
MPQ4432GLE-AEC1-Z is housed in a thermally enhanced, lead-free, RoHS-compliant QFN-16 (3mm × 4mm) package with wettable flanks for AOI-compatible solder joint inspection. Exposed thermal pad (Pin 4/9 PGND) must be connected to PCB ground plane via multiple vias for optimal thermal performance and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PHASE | Synchronization phase select | Drives high for in-phase sync with external clock; 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 | Internal connection point between HS-FET drain and LS-FET source; critical for EMI layout and snubber placement. |
| 4,9 PGND | Power ground | High-current return path for power MOSFETs; must be low-inductance copper pour tied to thermal pad. |
| 5 EN | Enable control | Digital input (0.9V–1.2V threshold); pulls low to enter 1µA shutdown mode; must not float. |
| 6 SYNC | Frequency sync & mode control | Accepts 350kHz–2.5MHz clock; high before startup forces CCM; low/floating enables AAM power-save mode. |
| 7 PG | Open-drain power-good flag | Asserts high when VOUT is within ±10% of nominal; 30µs delay on rise, 50µs on fall; requires pull-up resistor. |
| 8 BIAS | External bias supply input | Accepts 5V–18V external rail to power internal regulator; improves efficiency vs. VIN-derived VCC. |
| 11 BST | Bootstrap supply | Connects 0.1µF ceramic capacitor between BST and SW to drive high-side gate; critical for HS-FET turn-on. |
| 12 VCC | Internal bias supply | 5V regulated output; requires ≥1µF ceramic decoupling to AGND; powers gate drivers and logic. |
| 13 AGND | Analog ground reference | Separate low-noise ground for FB, SS, and error amplifier; must be star-connected to PGND at single point. |
| 14 SS | Soft-start timing | Current-source (10µA) charges external capacitor; sets ramp time for controlled inrush current; floating = 0.7ms default. |
| 15 FB | Feedback input | Compares output voltage (via resistor divider) to 800mV reference; fixed-output versions connect 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 automated optical inspection (AOI) of solder joints for zero-defect automotive manufacturing requirements. |
| AEC-Q100 Grade 1 qualification | Rated for −40°C to +125°C junction temperature; validated for automotive powertrain, body, and infotainment systems. |
| Advanced Asynchronous Mode (AAM) | Reduces light-load quiescent current to 10μA by dynamically scaling switching frequency-no external components required. |
| Low-dropout mode | Maintains regulation down to VIN = VOUT + 0.5V during cold-crank, supporting engine start-stop and battery sag conditions. |
| CISPR25 Class 5 EMI compliance | Validated with standard filter network; meets peak/average conducted and radiated emission limits up to 1GHz without shielding. |
| Programmable soft-start | Adjustable ramp time via external capacitor on SS pin prevents inrush current damage to input capacitors and upstream converters. |
Applications
| ADAS Camera Power Supply | Automotive Infotainment Core Rail |
|---|---|
|
Use Scenario: Powers 3.3V image sensor and ISP in forward-facing camera module operating from 9V–16V vehicle battery with cold-crank dips to 6V. IC Role / Device Role / Timing Role: Primary buck regulator providing stable 3.3V/2.2A with <100µs PG assertion and 80ns min-on-time for high duty cycle during cranking. Use Value: AAM mode extends battery life in parked surveillance mode; wettable flank package ensures solder joint reliability under vibration and thermal cycling. |
Use Scenario: Generates 5V core supply for SoC and DDR memory in head-unit system with EMI-sensitive audio and RF sections. IC Role / Device Role / Timing Role: Synchronized buck converter locked to system clock (1MHz) to avoid beat frequencies; PG monitors rail integrity for graceful SoC reset. Use Value: CISPR25 Class 5 compliance eliminates need for ferrite beads or shielded inductors; BIAS pin allows VOUT-derived bias for >92% full-load efficiency. |
| Telematics Control Unit (TCU) | Electric Power Steering (EPS) Sensor Interface |
|
Use Scenario: Supplies 3.8V rail to LTE modem and GNSS receiver in always-on cellular gateway with 10-year battery backup requirement. IC Role / Device Role / Timing Role: Low-IQ buck converter with 1µA shutdown current and programmable soft-start to prevent brownout during wake-up events. Use Value: 10μA sleep current enables >18-month battery life in disconnected state; AEC-Q100 Grade 1 ensures longevity in under-hood thermal environment. |
Use Scenario: Provides isolated 5V supply for torque and position sensors in EPS motor control module exposed to high EMI and thermal stress. IC Role / Device Role / Timing Role: High-SWR-rated buck stage with valley-current OCP and hiccup recovery to survive motor stall-induced short circuits. Use Value: Thermal shutdown (170°C) and robust PG signaling enable fail-safe diagnostics; QFN-16 wettable flank supports IPC-A-610 Class 3 solder quality. |
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-Z | Higher 3A output current; identical pinout, package, and feature set; 110mΩ/55mΩ MOSFETs. | Better suited for systems requiring margin above 2.2A or future-proofing for higher-power derivatives. | Select MPQ4433 if peak load exceeds 2.2A or if thermal headroom is constrained; same layout and firmware compatibility. |
| TPS543B20RTWT | 3.5V–18V input; 3A output; PMBus interface; no AAM; 15μA IQ; 4mm × 4mm QFN. | Requires digital configuration; lacks cold-crank support below 3.5V and wettable flank inspection capability. | Choose only if PMBus telemetry and dynamic voltage scaling are required; not drop-in due to different control architecture and lower VIN range. |
Compared with MPQ4433GLE-AEC1-Z, this part offers tighter cost and thermal footprint for 2.2A designs, while TPS543B20RTWT adds configurability at the expense of automotive transient robustness and optical inspectability.
Availability
MPQ4432GLE-AEC1-Z is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment head-units, telematics control units, and electric power steering sensor interfaces requiring stable component supply with AEC-Q100 traceability and long-term production continuity.
Supply support for MPQ4432GLE-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, and global manufacturing partnerships.
The MPQ4432 belongs to MPS's automotive-grade DC/DC converter product line, engineered specifically for harsh automotive environments requiring AEC-Q100 qualification, extended temperature operation, and EMI-hardened topology for safety-critical subsystems.
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 regulator, bypassing VIN-derived VCC. When connected to a clean, efficient rail like VOUT, it reduces power dissipation and improves overall efficiency-especially at high VIN. If unused, BIAS must be floated or tied to GND; leaving it unconnected risks undefined behavior.
How does the MPQ4432GLE-AEC1-Z achieve CISPR25 Class 5 compliance?
It achieves CISPR25 Class 5 compliance through optimized internal gate drive timing, integrated bootstrap circuitry, and minimized parasitic loop area in the QFN-16 wettable flank package. Validation was performed using the reference filter network in Figure 17 of the datasheet; no additional shielding or ferrites are required when layout guidelines are followed.
Can the MPQ4432GLE-AEC1-Z operate with input voltage below 3.3V?
No-the absolute minimum operating input voltage is 3.3V per datasheet specifications. During cold-crank events where battery voltage dips below this threshold, the device enters UVLO and ceases switching. Its low-dropout mode maintains regulation only down to VIN = VOUT + 0.5V, not below the 3.3V startup threshold.
What is the difference between AAM and forced CCM modes, and how is mode selection implemented?
AAM dynamically scales switching frequency at light load to reduce gate-driving and switching losses, achieving 10μA IQ. Forced CCM maintains fixed frequency regardless of load, minimizing output ripple but reducing light-load efficiency. Mode is selected before startup: SYNC high → CCM; SYNC low/floating → AAM. Once running, SYNC can be repurposed for clock synchronization.
Is the MPQ4432GLE-AEC1-Z pin-compatible with non-AEC-Q100 versions like MPQ4432GL-Z?
Yes-MPQ4432GLE-AEC1-Z shares identical pinout, package dimensions, and electrical characteristics with MPQ4432GL-Z and MPQ4432GL-AEC1-Z. The "E" suffix denotes wettable flanks, and "AEC1" confirms Grade 1 qualification; all variants use the same QFN-16 footprint and thermal pad layout.
How is power-good (PG) timing defined, and what happens during output fault conditions?
PG asserts high after VOUT reaches ±10% of nominal value, with a 30µs deglitch timer on rise and 50µs on fall. If VOUT falls outside this window, PG pulls low after 50µs; if VOUT recovers, PG reasserts high after 30µs. This hysteresis prevents chatter during marginal regulation and supports reliable system reset sequencing.
Does the MPQ4432GLE-AEC1-Z support output voltages other than 3.3V, 3.8V, and 5V?
Yes-the base MPQ4432 is adjustable via external resistor divider on FB pin, supporting any output from 0.8V to VIN−1V. Fixed-output variants (e.g., MPQ4432GLE-38-AEC1-Z) integrate the divider internally. The "GLE-AEC1-Z" suffix indicates the wettable flank, AEC-Q100 Grade 1, and tape-and-reel packaging-but does not restrict output voltage configuration.
MPQ4432GLE-AEC1-Z 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-Z FAQ
1.How can I place an order for MPQ4432GLE-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4432GLE-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 MPQ4432GLE-AEC1-Z reliable?
The price and inventory of MPQ4432GLE-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 MPQ4432GLE-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ4432GLE-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4432GLE-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4432GLE-AEC1-Z?
MPQ4432GLE-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4432GLE-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 MPQ4432GLE-AEC1-Z?
For technical support, including MPQ4432GLE-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4432GLE-AEC1-Z requirements.
6.How does Aetrix verify that MPQ4432GLE-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ4432GLE-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 MPQ4432GLE-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ4432GLE-AEC1-Z?
All MPQ4432GLE-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4432GLE-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 MPQ4432GLE-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ4432GLE-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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