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Monolithic Power Systems Inc. MPQ4341GLE-33-AEC1-P
- Part No.:
- MPQ4341GLE-33-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 17-PowerVFQFN
- Datasheet:
-
MPQ4341GLE-33-AEC1-P.pdf
- Description:
- IC REG BUCK 3.3V 5A 17QFN
- Quantity:
- Payment:
- Shipping:
Inventory:490
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Product details
Overview
MPQ4341GLE-33-AEC1-P from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified synchronous step-down DC/DC converter delivering up to 5A continuous output at fixed 3.3V, with 3.3V–36V input range, 1μA shutdown current, and multi-phase capability for automotive power rails. It integrates 60mΩ HS-FET and 35mΩ LS-FET, supports cold-crank down to 3.1V, and features zero-delay PWM control for fast transient response in ADAS domain controllers.
For engineers reviewing the MPQ4341GLE-33-AEC1-P datasheet, MPQ4341GLE-33-AEC1-P pinout, MPQ4341GLE-33-AEC1-P application, or MPQ4341GLE-33-AEC1-P equivalent, key selection criteria include its 3.3V fixed output accuracy (±1%), 42V load-dump tolerance, QFN-17 wettable-flank package, AAM/FCCM mode flexibility, and PG open-drain status signaling for functional safety compliance.
Technical Context
This buck regulator employs a configurable-frequency (350kHz–2.5MHz) zero-delay PWM architecture with internal high-side and low-side MOSFETs, enabling near-optimal transient response without external compensation. Its advanced asynchronous modulation (AAM) dynamically scales switching frequency under light loads to minimize quiescent current-achieving 3μA sleep-mode IQ while maintaining regulation.
The device implements dual-mode operation: forced continuous conduction mode (FCCM) for low-noise applications and AAM for ultra-low IQ battery preservation. Thermal shutdown (150°C), hiccup over-current protection, and 20ns minimum on-time support robust operation across automotive temperature ranges (−40°C to +150°C junction).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±1% (3230–3370 mV over −40°C to +150°C), enabling direct powering of MCU I/O rails without feedback resistor network. |
| Input Voltage Range | 3.3V to 36V with 42V load-dump survival-supports full automotive battery transients including ISO 7637-2 Pulse 5a. |
| Continuous Output Current | 5A at ambient ≤85°C with proper PCB thermal design; derates to ~4.2A at 125°C ambient per thermal resistance data. |
| Quiescent Current | 3μA in AAM sleep mode (no switching), enabling >1-year battery hold-up in always-on vehicle modules. |
| Switching Frequency | Configurable 350kHz–2.5MHz via FREQ pin resistor; enables EMI optimization and inductor size trade-offs (e.g., 1μH @ 2.2MHz vs. 4.7μH @ 410kHz). |
| Protection Features | Hiccup OCP, thermal shutdown (150°C trip, 20°C hysteresis), UVLO (2.8V rising), OVP (38V rising), and reverse-current limiting (4A LS valley limit). |
| Power Good Signal | Open-drain PG asserts high when VOUT is within 94–106% of nominal-provides system-level power sequencing and fault detection. |
Pinout & Package
MPQ4341GLE-33-AEC1-P uses a wettable-flank QFN-17 (3mm × 4mm) package with exposed thermal pad, optimized for automated optical inspection (AOI) and enhanced thermal performance in automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SS | Soft-start timing input | Sources 10µA to external capacitor; sets controlled VOUT ramp time to prevent inrush into downstream capacitance. |
| 2 FREQ | Frequency configuration | Resistor-to-ground sets fSW from 350kHz to 2.5MHz-enables EMI spread-spectrum tuning and layout-driven frequency selection. |
| 3 SYNCIN/MODE | Mode selection & sync input | Pull low for AAM (light-load efficiency); pull high for FCCM (low-noise); accept external clock for synchronized multi-phase operation. |
| 4,11 VIN | Main input supply | Accepts 3.3–36V; powers control circuitry and HS-FET gate driver; requires local ceramic decoupling for stability. |
| 5,10 PGND | Power ground return | High-current return path for HS/LS switches; must be routed separately from AGND to avoid noise coupling into feedback loop. |
| 6 BST | Bootstrap supply | Charges via SW node; supplies gate drive for HS-FET; requires 0.1µF ceramic capacitor between BST and SW for reliable bootstrapping. |
| 7,8 SW | Switch node | Internal connection point of HS/LS FETs; drives external inductor; high di/dt node requiring minimized loop area and solid ground plane. |
| 9 EN | Enable control | Active-high logic input (1V threshold); enables/disables regulation; tied to microcontroller GPIO for system-level power management. |
| 12 SYNCO | Sync output / slave mode select | Outputs master clock when floating; pulled low to configure as slave phase in multi-phase systems-enables precise interleaving. |
| 13 PG/PHASE | Power good or phase shift | Open-drain status output (94–106% window); in slave mode, resistor-to-AGND sets phase offset relative to master. |
| 14 ICS | Current sharing | Connects in parallel across phases to balance load current; tied to VCC for single-phase use-ensures <±5% current mismatch. |
| 15 VCC | Bias supply | Internally regulated 5V rail for gate drivers and logic; requires 10µF ceramic capacitor to stabilize under dynamic load conditions. |
| 16 AGND | Analog ground | Reference for feedback, soft-start, and internal references; must connect to PGND at single point near VCC capacitor to minimize noise. |
| 17 VOUT | Output voltage sense | Direct connection to output capacitor; provides accurate sensing for regulation-minimizes trace impedance errors in high-current paths. |
Key Features
| Feature | Design Value |
|---|---|
| Multi-phase capability | Supports up to 4-phase interleaving via SYNCO/ICS pins-reduces input/output ripple by factor of √N and eases thermal distribution in high-power ADAS ECUs. |
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C ambient (150°C junction), including HTOL, TC, ESD, and load-dump testing-meets automotive ASIL-B functional safety requirements. |
| Low-dropout (LDO) mode | Enables regulation down to VIN = 3.1V at full 5A-critical for engine cranking scenarios where battery dips below 6V for extended periods. |
| MeshConnect™ flip-chip packaging | Reduces parasitic inductance and improves thermal resistance (θJA = 29.2°C/W on EVB)-enables higher power density and lower EMI emissions per CISPR-25 Class 5. |
| Frequency spread spectrum (FSS) | Modulates fSW to reduce peak EMI amplitude-facilitates pass/fail certification in noisy automotive environments without added shielding or filtering. |
Applications
| Automotive Clusters | Automotive Infotainment |
|---|---|
Use Scenario: Digital instrument cluster with TFT display, CAN gateway, and real-time OS requiring stable 3.3V for MCU, memory, and interface ICs. IC Role / Device Role / Timing Role: Primary 3.3V power rail generator with PG monitoring for safe boot sequence and brown-out detection. Use Value: 1μA shutdown current extends battery life during vehicle sleep; 42V load-dump tolerance prevents field failures during alternator transients. | Use Scenario: Head unit with audio DSP, USB-C PD, and wireless connectivity needing clean, efficient 3.3V for RF front-end and baseband processors. IC Role / Device Role / Timing Role: Secondary buck stage after main 5V rail, providing low-noise 3.3V with FCCM mode for EMI-sensitive analog sections. Use Value: Configurable fSW and FSS allow EMI tuning to meet strict OEM radiated emission limits without redesigning PCB layout. |
| Advanced Driver Assistance Systems (ADAS) | Industrial Power Systems |
Use Scenario: Radar ECU with FPGA, ADCs, and high-speed SerDes requiring tightly regulated 3.3V with fast transient response to sensor burst modes. IC Role / Device Role / Timing Role: Core power supply with ZDP control ensuring <10µs recovery from 50% load steps-maintains timing integrity in real-time processing pipelines. Use Value: 20ns minimum on-time enables high VIN/VOUT ratios (e.g., 12V→3.3V @ 2.2MHz), reducing inductor size and cost in space-constrained radar modules. | Use Scenario: Ruggedized industrial HMI with wide-input-range power supply supporting 24VDC factory bus and backup battery operation. IC Role / Device Role / Timing Role: Input-stage buck converter accepting 18–36V nominal input while surviving 42V surges-replaces discrete solutions with integrated reliability. Use Value: AEC-Q100 qualification ensures long-term reliability in harsh environments (vibration, thermal cycling), reducing field return rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4341JGLE-33-AEC1-P | QFN-19 package with additional NC pin and dedicated SYNCIN/MODE pin separation; identical electrical specs and thermal rating. | Preferred for new designs requiring explicit mode control routing or tighter layout isolation between sync and enable signals. | Select when board layout benefits from separated SYNCIN and MODE functions or when using multi-phase with independent mode configuration per phase. |
| TPS54560QDGQRQ1 | Lower max output current (5A vs. 5A), wider fSW range (100kHz–2.5MHz), but no AAM mode; 15µA IQ in sleep vs. 3µA. | Lacks multi-phase capability and wettable flanks; not optimized for ultra-low-IQ battery hold-up in always-on modules. | Choose only if existing TI ecosystem integration outweighs 5× higher sleep IQ and missing PG/PHASE flexibility for ADAS timing synchronization. |
Compared with MPQ4341JGLE-33-AEC1-P, the QFN-19 variant offers pin-level signal separation at no performance cost; versus TPS54560QDGQRQ1, the MPQ4341GLE-33-AEC1-P delivers 5× lower sleep IQ, integrated multi-phase support, and AEC-Q100-compliant wettable flanks-making it superior for next-gen automotive power rails demanding efficiency, safety, and scalability.
Availability
MPQ4341GLE-33-AEC1-P is available at Aetrix Electronics and suitable for automotive clusters, ADAS ECUs, infotainment head units, and industrial HMIs requiring stable component supply with AEC-Q100 Grade 1 assurance and long-lifecycle availability.
Supply support for MPQ4341GLE-33-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 power management ICs, with core expertise in DC/DC conversion, motor drivers, and LED lighting controllers.
The MPQ4341 product line targets automotive-grade power conversion, designed specifically for ADAS, body electronics, and infotainment systems requiring AEC-Q100 qualification, ultra-low quiescent current, and robust transient handling.
FAQ
What is the maximum allowable input voltage for continuous operation?
The MPQ4341GLE-33-AEC1-P operates continuously up to 36V input. Its absolute maximum rating is 42V for load-dump transients per ISO 7637-2, but sustained operation above 36V risks permanent damage and violates recommended operating conditions.
How does the AAM mode improve light-load efficiency?
AAM mode reduces switching frequency under light loads to minimize gate driver and switching losses, achieving 3μA quiescent current. Unlike pulse-skipping, it maintains regulation without output voltage ripple spikes-critical for noise-sensitive automotive sensors and RF circuits.
Can this part be used in a single-phase configuration without connecting ICS?
Yes. For single-phase operation, tie the ICS pin directly to VCC (5V). Leaving ICS floating is prohibited; incorrect termination causes undefined current-sharing behavior and potential overcurrent in multi-phase configurations.
What is the purpose of the wettable flank feature in the QFN-17 package?
Wettable flanks expose solderable sidewalls on all four edges of the QFN package, enabling automated optical inspection (AOI) of solder joint quality-mandatory for automotive manufacturing process control and zero-defect reliability requirements.
Does the PG pin require an external pull-up resistor?
Yes. The PG pin is open-drain and must be pulled up to a valid logic voltage (e.g., 3.3V or 5V) via a 10kΩ resistor. Without pull-up, PG cannot assert high to indicate valid output voltage, breaking power sequencing and fault detection in automotive systems.
How is thermal performance affected by PCB layout?
Thermal resistance θJA drops from 44.7°C/W (JESD51-7 4-layer board) to 29.2°C/W on MPS's 4-layer EVB with 2oz copper. Key factors include thermal pad solder coverage (>90%), thermal vias (≥8x 0.3mm diameter), and copper pour area-poor layout can raise junction temperature by >30°C at 5A.
What happens during cold-crank conditions below 6V input?
In low-dropout (LDO) mode, the device maintains 3.3V regulation down to VIN = 3.1V at full 5A load. Internal circuitry sustains gate drive and control loop stability even as input collapses-ensuring uninterrupted operation of critical ADAS vision processors during engine start.
MPQ4341GLE-33-AEC1-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 17-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.3V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 5A
- 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:
- 17-QFN (3x4)
MPQ4341GLE-33-AEC1-P FAQ
1.How can I place an order for MPQ4341GLE-33-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4341GLE-33-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 MPQ4341GLE-33-AEC1-P reliable?
The price and inventory of MPQ4341GLE-33-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 MPQ4341GLE-33-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPQ4341GLE-33-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4341GLE-33-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4341GLE-33-AEC1-P?
MPQ4341GLE-33-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4341GLE-33-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 MPQ4341GLE-33-AEC1-P?
For technical support, including MPQ4341GLE-33-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4341GLE-33-AEC1-P requirements.
6.How does Aetrix verify that MPQ4341GLE-33-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPQ4341GLE-33-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 MPQ4341GLE-33-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPQ4341GLE-33-AEC1-P?
All MPQ4341GLE-33-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4341GLE-33-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 MPQ4341GLE-33-AEC1-P part is unused and in its original packaging.
Return procedure for MPQ4341GLE-33-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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