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Monolithic Power Systems Inc. MPQ4341GLE-5-AEC1-Z
- Part No.:
- MPQ4341GLE-5-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 17-PowerVFQFN
- Datasheet:
-
MPQ4341GLE-5-AEC1-Z.pdf
- Description:
- IC REG BUCK 5V 5A 17QFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MPQ4341GLE-5-AEC1-Z from Monolithic Power Systems is a 36V, 5A AEC-Q100 Grade 1 qualified synchronous step-down converter with fixed 5V output, integrated 60mΩ HS-FET and 35mΩ LS-FET, 1μA shutdown current, and configurable switching frequency (350kHz–2.5MHz). It delivers high efficiency across load ranges in automotive infotainment and ADAS power rails.
For engineers reviewing the MPQ4341GLE-5-AEC1-Z datasheet, MPQ4341GLE-5-AEC1-Z pinout, MPQ4341GLE-5-AEC1-Z application, or MPQ4341GLE-5-AEC1-Z equivalent, key selection criteria include cold-crank support (3.1V VIN), 42V load-dump tolerance, multi-phase capability via ICS pin, and wettable-flank QFN-17 package for automated optical inspection.
Technical Context
This device implements zero-delay PWM (ZDP) control with advanced asynchronous modulation (AAM) for light-load efficiency and forced continuous conduction mode (FCCM) for low-noise operation. Its internal gate drivers support bootstrap-based high-side drive and feature hiccup-mode over-current protection.
The IC integrates thermal shutdown (150°C trip), power-good monitoring (94–106% VOUT window), and configurable frequency via external resistor on FREQ pin. Multi-phase synchronization is achieved through SYNCIN/MODE and SYNCO pins, while ICS enables current sharing between parallel converters.
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) and 42V load dump transients |
| Output Voltage | Fixed 5.000V ±1.2% - guaranteed over -40°C to +150°C junction temperature |
| Max Output Current | 5A continuous - sustained at TA = 85°C with proper PCB thermal design per θJA = 44.7°C/W |
| Quiescent Current | 3μA in sleep mode - enables >10-year battery standby life in always-on automotive modules |
| Switching Frequency | 350kHz to 2.5MHz - adjustable via external resistor; supports CISPR-25 Class 5 EMI compliance |
| HS/LS RDS(ON) | 60mΩ / 35mΩ - minimizes conduction loss at 5A, enabling >92% peak efficiency at 12V→5V |
| Thermal Protection | 150°C shutdown with 20°C hysteresis - ensures fault-tolerant operation under overload or poor heatsinking |
Pinout & Package
MPQ4341GLE-5-AEC1-Z uses a wettable-flank QFN-17 (3mm × 4mm) package with exposed thermal pad. Pin 1 is marked by dot; top marking includes "MP", year/week code, "4341", lot, and "E" for wettable flank.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SS (Pin 1) | Soft-start timing input | 10µA current source charges external capacitor to linearly ramp reference voltage and limit inrush current |
| FREQ (Pin 2) | Frequency configuration | Resistor-to-ground sets fSW from 350kHz to 2.5MHz; enables EMI optimization and inductor size trade-off |
| SYNCIN/MODE (Pin 3) | Sync input & operating mode select | Pull high for FCCM; pull low for AAM; connect to external clock for synchronization |
| VIN (Pins 4, 11) | Main input supply | Accepts 3.3–36V; powers control circuitry and SW node; requires local ceramic decoupling |
| PGND (Pins 5, 10) | Power ground return | Low-impedance path for high di/dt switch currents; must be connected to thermal pad and solid ground plane |
| BST (Pin 6) | Bootstrap supply | Drives high-side MOSFET gate; requires 0.1µF ceramic capacitor between BST and SW |
| SW (Pins 7, 8) | Switch node | Connects to inductor; carries full switching current; layout critical for EMI and efficiency |
| EN (Pin 9) | Enable control | Active-high logic input; 1V threshold enables regulation; <0.85V disables with 1μA ISD |
| SYNCO (Pin 12) | Sync output / slave mode input | Outputs synchronized clock when floating (master); grounded to enable slave phase alignment |
| PG/PHASE (Pin 13) | Power-good indicator / phase shift | Open-drain output signals VOUT in regulation (94–106%); resistor-to-AGND sets phase offset in multi-phase |
| ICS (Pin 14) | Current sharing | Parallel connection of ICS pins across phases improves load balancing; tie to VCC for single-phase use |
| VCC (Pin 15) | Bias supply | Internal 5V regulator output; powers gate drivers; requires 10µF ceramic capacitor to AGND |
| AGND (Pin 16) | Analog ground reference | Reference for feedback, soft-start, and internal comparators; separate from PGND but tied at single point |
| VOUT (Pin 17) | Output voltage sense | Direct connection to regulated output rail; used for feedback loop stability and accuracy |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +150°C TJ operation in automotive environments with full reliability testing |
| Multi-phase capability | ICS pin enables precise current sharing across up to 4 parallel converters without external controllers |
| Low-dropout (LDO) mode | Maintains regulation down to VIN = 5.3V at 5A, supporting automotive cold-crank conditions |
| MeshConnect™ flip-chip packaging | Reduces parasitic inductance and improves thermal resistance (θJC = 5.2°C/W) vs. standard QFN |
| Frequency spread spectrum (FSS) | Modulates fSW to reduce peak EMI amplitude, aiding CISPR-25 Class 5 compliance |
| Zero-delay PWM (ZDP) control | Minimizes propagation delay for fast transient response (<10µs recovery from 50% load step) |
Applications
| Automotive Infotainment | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Powering SoC, display controller, and audio DSP in head-unit systems with variable battery input. IC Role / Device Role / Timing Role: Primary 5V buck regulator delivering stable, low-noise power with fast load transient response. Use Value: Maintains 5V ±1.2% under 42V load dump and 3.1V cold crank, ensuring system uptime during engine start-stop cycles. | Use Scenario: Supplying radar processor, camera ISP, and sensor fusion MCU in front-camera or surround-view modules. IC Role / Device Role / Timing Role: High-efficiency intermediate rail generator with multi-phase scalability for thermal management. Use Value: Achieves >93% efficiency at 3A/5V with 2.2MHz switching, reducing heat in compact ADAS enclosures. |
| Automotive Clusters | Industrial Power Systems |
Use Scenario: Driving TFT-LCD backlight, microcontroller, and CAN transceiver in digital instrument clusters. IC Role / Device Role / Timing Role: Single-chip 5V supply with integrated PG signal for system power sequencing and fault reporting. Use Value: Open-drain PG output simplifies host MCU monitoring of 5V rail health with 94–106% window detection. | Use Scenario: Providing robust 5V bias for PLC I/O modules, motor drives, and industrial HMIs operating in harsh environments. IC Role / Device Role / Timing Role: Automotive-grade DC-DC converter repurposed for extended-temperature industrial applications. Use Value: AEC-Q100 qualification ensures long-term reliability in -40°C to +125°C ambient industrial deployments. |
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-5-AEC1-Z | QFN-19 package with additional NC pin and dedicated SYNCIN/MODE pin; identical electrical specs | Enables cleaner separation of sync and mode functions; preferred for new multi-phase designs requiring explicit mode control | Select when board layout allows larger footprint and explicit sync/mode routing is required |
| TPS54560QDGQRQ1 | 42V, 5A buck with 3.5μA IQ; no multi-phase ICS pin; 100kHz–2.5MHz fSW; different pinout and control architecture | Lacks current-sharing capability; uses external compensation; less optimized for ultra-low-IQ battery backup | Choose if TI ecosystem compatibility or external compensation flexibility is prioritized over multi-phase scalability |
Compared with MPQ4341JGLE-5-AEC1-Z, this part offers identical performance in a smaller QFN-17 footprint but sacrifices dedicated sync/mode separation; versus TPS54560QDGQRQ1, it provides native multi-phase support and lower quiescent current, critical for always-on automotive subsystems.
Availability
MPQ4341GLE-5-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment, ADAS domain controllers, and digital instrument clusters requiring stable component supply with AEC-Q100 traceability and long-lifecycle support.
Supply support for MPQ4341GLE-5-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 for automotive, industrial, and consumer applications.
The MPQ4341 product line targets automotive power conversion with AEC-Q100 qualification, multi-phase scalability, and ultra-low quiescent current for always-on subsystems.
FAQ
What is the minimum input voltage required for startup under cold-crank conditions?
The MPQ4341GLE-5-AEC1-Z starts regulation at VIN ≥ 3.3V and maintains output down to 3.1V in low-dropout mode. Its UVLO rising threshold is 3.0V (typical), allowing reliable operation during engine cranking where battery voltage dips transiently to 3.1V.
How does the ICS pin enable multi-phase current sharing?
The ICS pin implements a current-sharing amplifier that senses output current imbalance across parallel converters. When ICS pins are tied together, the device with higher current reduces its duty cycle to equalize load distribution, achieving ±5% current matching across phases without external controllers.
Can the MPQ4341GLE-5-AEC1-Z operate without an external soft-start capacitor?
No - the SS pin requires an external capacitor to set soft-start time. Without it, the internal 10µA current source has no integration node, causing uncontrolled reference ramp and potential output overshoot or inrush current exceeding 5A.
What is the purpose of the wettable flanks on the QFN-17 package?
Wettable flanks provide solderable side walls on the QFN package, enabling automated optical inspection (AOI) of solder joint quality under the package. This is critical for automotive manufacturing to ensure reliability of thermally demanding power converter solder joints.
Does the device support external synchronization above 2.5MHz?
No - the SYNCIN pin accepts external clocks only within 90–115% of the internally configured fSW. Since maximum internal fSW is 2.5MHz, the highest supported sync frequency is 2.875MHz, and operation outside this window causes undefined behavior or loss of regulation.
How is thermal performance affected by PCB copper area?
Thermal resistance θJA drops from 44.7°C/W (standard JEDEC 4-layer board) to ~29.2°C/W on MPS's 4-layer 2oz EVB. Increasing copper area under the thermal pad and using multiple vias to inner ground planes directly lowers junction temperature rise by up to 35°C at 5A full load.
What failure modes trigger hiccup over-current protection?
Hiccup OCP activates when either high-side peak current exceeds 7.7A (typical) or low-side valley current falls below –0.1A (ZCD threshold). After three consecutive faults, the device shuts down for 10ms before retrying, preventing thermal runaway during short-circuit or overload events.
MPQ4341GLE-5-AEC1-Z 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):
- 5V
- 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-5-AEC1-Z FAQ
1.How can I place an order for MPQ4341GLE-5-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4341GLE-5-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 MPQ4341GLE-5-AEC1-Z reliable?
The price and inventory of MPQ4341GLE-5-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 MPQ4341GLE-5-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ4341GLE-5-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4341GLE-5-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4341GLE-5-AEC1-Z?
MPQ4341GLE-5-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4341GLE-5-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 MPQ4341GLE-5-AEC1-Z?
For technical support, including MPQ4341GLE-5-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4341GLE-5-AEC1-Z requirements.
6.How does Aetrix verify that MPQ4341GLE-5-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ4341GLE-5-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 MPQ4341GLE-5-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ4341GLE-5-AEC1-Z?
All MPQ4341GLE-5-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4341GLE-5-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 MPQ4341GLE-5-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ4341GLE-5-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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