My Inquiry
My Account
Monolithic Power Systems Inc. MPQ4323CGDE-AEC1-Z
- Part No.:
- MPQ4323CGDE-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 12-PowerVFQFN
- Datasheet:
-
MPQ4323CGDE-AEC1-Z.pdf
- Description:
- IC REG BUCK ADJ 3A 12QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,990
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MPQ4323CGDE-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, synchronous step-down DC/DC converter with integrated 70mΩ high-side and 50mΩ low-side MOSFETs, delivering 3A continuous output current across a 3.3V–36V input range and surviving 42V automotive load dump transients. It operates from –40°C to +150°C junction temperature and supports cold-crank down to 3.1V VIN, making it suitable for automotive infotainment power rails.
For engineers reviewing the MPQ4323CGDE-AEC1-Z datasheet, MPQ4323CGDE-AEC1-Z pinout, MPQ4323CGDE-AEC1-Z application, or MPQ4323CGDE-AEC1-Z equivalent, key selection considerations include its 350kHz–2.5MHz configurable switching frequency, 1μA shutdown quiescent current, CISPR25 Class 5 EMI compliance, and QFN-12 (2mm×3mm) wettable flank package with thermal performance validated up to 3A load.
Technical Context
The MPQ4323CGDE-AEC1-Z uses peak current mode control with frequency foldback during start-up to prevent inductor current runaway. Its internal gate drivers support minimum on/off times of 65ns/50ns, enabling stable operation at high duty cycles and low dropout under cold-crank conditions.
It integrates symmetric VIN pinout, spread-spectrum modulation, and MeshConnect™ flip-chip packaging to reduce EMI. The device features forced CCM, hiccup-mode OCP, thermal shutdown with 20°C hysteresis, and a precision 0.8V ±1% feedback reference with <100nA input bias current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.3V to 36V - supports full automotive battery range including cold-crank (3.1V min after start-up) |
| Output Current | 3A continuous - sustained at TJ ≤ +150°C with QFN-12 (2mm×3mm) package on standard 4-layer PCB |
| Switching Frequency | 350kHz to 2.5MHz - resistor-programmable via FREQ pin; ±10% spread spectrum enabled by default |
| Quiescent Current | 1μA in shutdown - enables always-on systems with minimal battery drain |
| Load Dump Tolerance | 42V - meets ISO 16750-2 Pulse 5a requirements without external TVS |
| Feedback Reference | 0.8V ±1% - enables precise adjustable output regulation from 0.8V to 0.95×VIN |
| Power Good Threshold | ±5.5% window (94.5%–105.5%) - open-drain PG signal with 70μs rising deglitch |
Pinout & Package
MPQ4323CGDE-AEC1-Z is housed in a QFN-12 (2mm × 3mm) package with wettable flanks and exposed thermal pad. Pin 1 is marked by a dot; top-side marking includes production code, year/week, and lot number.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 11 | PGND | Power ground return for high-current paths; must be connected to low-impedance ground plane |
| 2, 10 | VIN | Main input supply (dual pins internally tied); requires local 10μF ceramic decoupling per pin |
| 3 | BOOT | Bootstrap supply for high-side driver; requires 0.1μF ceramic capacitor between BOOT and SW |
| 4 | FREQ | Resistor-programmed frequency setting; connects to GND to select fSW from 350kHz–2.5MHz |
| 5 | VCC | Bias regulator output; requires ≥1μF ceramic capacitor placed adjacent to pin |
| 6 | AGND | Analog ground reference for FB, PG, EN; must be separated from PGND and joined at single point |
| 7 | FB | Feedback input for output voltage regulation; 0.8V reference enables adjustable or fixed-output configurations |
| 8 | PG | Open-drain power-good indicator; pulled high externally when VOUT is within ±5.5% of target |
| 9 | EN | Enable control with 0.85V/1.02V thresholds; no internal pull-up/down; must not float |
| 12 | SW | Switch node connecting HS-FET source and LS-FET drain; critical for layout and EMI control |
Key Features
| Feature | Design Value |
|---|---|
| Automotive-grade reliability | AEC-Q100 Grade 1 qualified (–40°C to +150°C TJ), 42V load dump survival, 3.1V cold-crank support |
| Thermal performance | θJA = 60°C/W (JESD51-7), θJC = 7.3°C/W; case thermal rise ≤30°C at 3A/12VIN/5VOUT (2.2MHz) |
| EMI optimization | CISPR25 Class 5 compliant; symmetric VIN pinout, spread-spectrum modulation, and MeshConnect™ flip-chip construction |
| Control flexibility | Configurable frequency, forced CCM mode, low-dropout operation, and hiccup OCP with valley current limiting |
| Integrated power stages | 70mΩ HS-FET + 50mΩ LS-FET enable >95% efficiency at 1A–3A loads with minimal external components |
Applications
| Automotive Infotainment | Automotive Clusters |
|---|---|
Use Scenario: Powering SoC, display drivers, and audio codecs in head units with wide input voltage variation and strict EMI limits. IC Role / Device Role / Timing Role: Primary 5V/3.3V buck regulator supplying core logic and interface circuitry. Use Value: 42V load dump tolerance eliminates need for upstream TVS; CISPR25 Class 5 compliance avoids costly shielding. | Use Scenario: Supplying instrument cluster microcontrollers and TFT LCD bias rails in environments with frequent cold-crank events. IC Role / Device Role / Timing Role: Main system rail converter operating continuously through 3.1V battery dips. Use Value: High duty cycle and low-dropout mode maintain regulated output during cranking without brownout. |
| ADAS Camera Modules | Industrial Vehicle Telematics |
Use Scenario: Providing clean, efficient 3.3V power to image sensors and ISP processors in rear-view and surround-view cameras. IC Role / Device Role / Timing Role: Point-of-load regulator with fast transient response and low noise for analog sensor front-ends. Use Value: 65ns minimum on-time enables high-frequency operation for compact magnetics; <100nA FB bias minimizes divider error. | Use Scenario: Powering LTE/GNSS modules and CAN controllers in fleet management gateways exposed to harsh industrial vehicle electrical systems. IC Role / Device Role / Timing Role: Robust primary DC/DC stage handling alternator ripple, load dump, and reverse battery conditions. Use Value: Integrated 42V tolerance and AEC-Q100 qualification ensure long-term reliability without derating. |
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 |
|---|---|---|---|
| MPQ4323CGRHE-AEC1-Z | QFN-14 (2.5mm×3.5mm) package; lower θJA (48.6°C/W) and higher power dissipation (3.7W) | Better thermal performance for 3A continuous loads in space-constrained but thermally demanding layouts | Select when board-level thermal resistance exceeds 35°C/W and case temperature must stay below 100°C at full load |
| MPQ4323CGLE-AEC1-Z | QFN-12 (3mm×4mm) package; θJA = 50°C/W; same pinout compatibility but larger footprint | Higher copper area for improved heat spreading in cost-sensitive industrial designs without wettable flank requirement | Select when solder inspection is prioritized over size, and JEDEC-standard reflow profile is required |
Compared with MPQ4323CGDE-AEC1-Z, the GRHE variant offers superior thermal capability in a slightly larger footprint, while the CGLE variant trades compactness for simplified assembly and marginally better thermal resistance-both retain identical electrical specs and AEC-Q100 Grade 1 qualification.
Availability
MPQ4323CGDE-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and instrument clusters requiring stable component supply with guaranteed AEC-Q100 Grade 1 compliance and traceable automotive-grade sourcing.
Supply support for MPQ4323CGDE-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 power management ICs, with design centers in the US, China, and Taiwan.
The MPQ4323C product line delivers ultra-compact, automotive-qualified buck converters optimized for harsh electrical environments-including load dump, cold crank, and wide temperature operation-targeting next-generation vehicle electronics.
FAQ
What is the maximum allowable input voltage for MPQ4323CGDE-AEC1-Z during load dump?
The device is rated for 42V absolute maximum input voltage under automotive load dump conditions per ISO 16750-2 Pulse 5a. This rating is sustained for up to 400ms and does not require external clamping components when used within recommended layout guidelines and thermal limits.
Can MPQ4323CGDE-AEC1-Z operate with input voltage below 3.3V?
No. The specified minimum operating input voltage is 3.3V. However, the device supports cold-crank operation down to 3.1V after start-up due to its UVLO falling threshold of 2.9V and hysteresis of 750mV-enabling continued regulation during brief battery sags.
How is switching frequency configured on MPQ4323CGDE-AEC1-Z?
Frequency is set by connecting an external resistor between the FREQ pin and GND. Typical values include 86.6kΩ for 415kHz, 34.8kΩ for 1MHz, and 15kΩ for 2.2MHz. The actual frequency varies ±10% with spread-spectrum modulation enabled by default for EMI reduction.
Does MPQ4323CGDE-AEC1-Z support forced continuous conduction mode (FCCM)?
Yes. FCCM is enabled by pulling the MODE pin high (not present on this variant) or via register configuration in compatible versions-but MPQ4323CGDE-AEC1-Z implements FCCM inherently in its control architecture during light loads to maintain constant frequency and minimize output voltage ripple.
What is the thermal performance of the QFN-12 (2mm×3mm) package at full 3A load?
On a standard 4-layer 2oz copper evaluation board (EVQ4323C-D-00A), case temperature rise is ≤30°C at 3A, 12VIN, 5VOUT, and 2.2MHz switching frequency. Junction-to-case thermal resistance is 7.3°C/W, enabling reliable operation up to +150°C junction temperature with proper PCB copper area.
Is the PG (power good) signal active-high or open-drain?
The PG pin is strictly open-drain. It requires an external pull-up resistor to a valid logic voltage (e.g., VOUT or VCC). PG asserts high when output voltage is within 94.5%–105.5% of the nominal value and pulls low outside that window, with 70μs rising and 60μs falling deglitch timing.
Does MPQ4323CGDE-AEC1-Z include reverse current protection?
Yes. It features integrated reverse current limiting with a threshold of 1.8A, preventing backfeed from the output to input during fault or shutdown conditions. This protects upstream sources and eliminates the need for an external blocking diode in most automotive applications.
MPQ4323CGDE-AEC1-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 12-PowerVFQFN
- 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):
- 0.8V
- Voltage - Output (Max):
- 34.2V
- Current - Output:
- 3A
- Frequency - Switching:
- 350kHz ~ 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 12-QFN (2x3)
MPQ4323CGDE-AEC1-Z FAQ
1.How can I place an order for MPQ4323CGDE-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4323CGDE-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 MPQ4323CGDE-AEC1-Z reliable?
The price and inventory of MPQ4323CGDE-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 MPQ4323CGDE-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ4323CGDE-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4323CGDE-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4323CGDE-AEC1-Z?
MPQ4323CGDE-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4323CGDE-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 MPQ4323CGDE-AEC1-Z?
For technical support, including MPQ4323CGDE-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4323CGDE-AEC1-Z requirements.
6.How does Aetrix verify that MPQ4323CGDE-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ4323CGDE-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 MPQ4323CGDE-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ4323CGDE-AEC1-Z?
All MPQ4323CGDE-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4323CGDE-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 MPQ4323CGDE-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ4323CGDE-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPQ4323CGDE-AEC1-Z Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
