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Monolithic Power Systems Inc. MPQ4340GLE-5-AEC1-Z
- Part No.:
- MPQ4340GLE-5-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 17-PowerVFQFN
- Datasheet:
-
MPQ4340GLE-5-AEC1-Z.pdf
- Description:
- IC REG BUCK 5V 4A 17QFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MPQ4340GLE-5-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified synchronous step-down DC/DC converter delivering up to 4A continuous output current at fixed 5V, with 3.3V–36V input range, 1μA shutdown current, and configurable 350kHz–2.5MHz switching frequency. It integrates 60mΩ high-side and 35mΩ low-side MOSFETs and supports automotive cold-crank (down to 3.1V) and 42V load dump protection.
For engineers reviewing the MPQ4340GLE-5-AEC1-Z datasheet, MPQ4340GLE-5-AEC1-Z pinout, MPQ4340GLE-5-AEC1-Z application, or MPQ4340GLE-5-AEC1-Z equivalent, key selection criteria include its ultra-low quiescent current in sleep mode (3µA), multi-phase capability via ICS pin, zero-delay PWM control for fast transient response, and wettable-flank QFN-17 package for automated optical inspection in automotive PCB assembly.
Technical Context
The MPQ4340GLE-5-AEC1-Z implements a fixed-frequency zero-delay PWM (ZDP) controller with internal gate drivers, enabling near-optimal transient response under dynamic load steps. Its advanced asynchronous modulation (AAM) mode reduces switching losses at light loads by skipping pulses while maintaining regulation.
It features dual operating modes: forced continuous conduction mode (FCCM) when SYNCIN/MODE is pulled high, and AAM/pulse-skipping mode when pulled low. The device supports external synchronization via SYNCIN and provides synchronized clock output (SYNCO) for multi-phase interleaving, with phase shift programmable via PG/PHASE resistor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±2% over -40°C to +150°C junction temperature - ensures stable MCU/SOC core rail in automotive clusters. |
| Input Voltage Range | 3.3V to 36V with 42V load dump survival - accommodates full automotive battery transients including cold-crank (≥3.1V) and jump-start. |
| Continuous Output Current | 4A maximum - sufficient to power ADAS camera modules or infotainment SoCs without external current boosting. |
| Quiescent Current | 3µA in sleep mode (AAM, no load) - extends battery life in always-on vehicle subsystems like telematics. |
| Switching Frequency | Configurable 350kHz–2.5MHz via FREQ pin resistor - enables EMI optimization and inductor size reduction (e.g., 1µH at 2.2MHz). |
| Thermal Protection | 150°C junction thermal shutdown with 20°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking. |
| Package | QFN-17 (3mm × 4mm) with wettable flanks - supports AOI-compatible reflow and high-density automotive PCB layouts. |
Pinout & Package
MPQ4340GLE-5-AEC1-Z uses a 3mm × 4mm QFN-17 package with wettable flanks and exposed thermal pad. Pin numbering follows top-view orientation with pin 1 marked by dot or chamfered corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SS | Soft-start timing input | 10µA current source charges external capacitor to linearly ramp reference voltage, limiting inrush current during startup. |
| 2 FREQ | Switching frequency set | Resistor-to-ground sets fSW from 350kHz to 2.5MHz; enables EMI spread-spectrum tuning and inductor optimization. |
| 3 SYNCIN/MODE | Sync input & operation mode select | Pull high for FCCM; pull low for AAM; accept external clock for precise multi-phase interleaving. |
| 4,11 VIN | Main input power supply | Accepts 3.3V–36V; powers control circuitry and high-side switch; requires local ceramic decoupling. |
| 5,10 PGND | Power ground return | Low-impedance path for high-current switch node return; must be connected to thermal pad and solid ground plane. |
| 6 BST | Bootstrap supply for HS-FET gate | Connect 0.1µF ceramic between BST and SW to generate >5V gate drive for internal 60mΩ high-side MOSFET. |
| 7,8 SW | Switch node | Drives external inductor; connects internally to both HS-FET drain and LS-FET source; high dv/dt node requiring tight layout. |
| 9 EN | Enable control | Active-high logic input; 1V threshold enables regulator; <0.85V shuts down with 1µA ISD for battery preservation. |
| 12 SYNCO | Sync output / slave mode select | Outputs master clock or accepts external sync; tied low to configure as slave in multi-phase configuration. |
| 13 PG/PHASE | Power-good indicator / phase shift | Open-drain output asserts high when VOUT is within 94–106% of 5V; resistor-to-ground sets phase offset in slave mode. |
| 14 ICS | Current sharing bus | Parallel connection across phases improves load balancing; tie to VCC for single-phase operation. |
| 15 VCC | Bias supply for gate drivers | Internal 5V LDO output; requires ≥4.7µF ceramic decoupling close to pin for stable gate drive under load transients. |
| 16 AGND | Analog ground reference | Reference for feedback, soft-start, and internal comparators; must be star-connected to PGND near IC. |
| 17 VOUT | Regulated output sense point | Direct connection to output capacitor; used for feedback loop compensation and PG monitoring accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +150°C junction operation - meets automotive power rail reliability requirements for engine bay and cabin modules. |
| Multi-phase capability via ICS pin | Enables parallel operation of up to 4 converters with <±5% current mismatch - scales output current beyond 4A without derating. |
| Zero-delay PWM (ZDP) control | Eliminates control-loop latency - achieves <10µs output recovery from 50% load step, critical for radar and camera power rails. |
| Frequency spread spectrum (FSS) | Reduces peak EMI by ±10% around center frequency - helps meet CISPR-25 Class 5 radiated emissions limits in infotainment systems. |
| Low-dropout (LDO) mode | Maintains regulation down to VIN = VOUT + 0.3V - sustains 5V output during 3.1V cold-crank events without dropout or reset. |
| MeshConnect™ flip-chip packaging | Reduces parasitic inductance and improves thermal resistance (θJC = 5.2°C/W) - lowers junction temperature rise by ~12°C at 4A full load. |
Applications
| Automotive Instrument Clusters | ADAS Camera Modules |
|---|---|
Use Scenario: Powering TFT-LCD display, microcontroller, and CAN transceiver in digital dashboard under wide temperature and battery voltage variation. IC Role / Device Role / Timing Role: Primary 5V buck regulator supplying core logic and display bias rails with tight line/load regulation (<±0.2%). Use Value: Survives 42V load dump and cold-crank (3.1V) without brownout; ultra-low IQ preserves battery during ignition-off monitoring. | Use Scenario: Providing clean, low-noise 5V power to image sensor and ISP in forward-facing driver assistance cameras. IC Role / Device Role / Timing Role: High-efficiency, low-EMI power stage with ZDP control ensuring stable voltage during rapid scene changes and LED flash bursts. Use Value: FSS and symmetric VIN pinout reduce conducted/radiated noise that could corrupt image data or trigger false positives. |
| Automotive Infotainment Head Units | Industrial Vehicle Telematics |
Use Scenario: Delivering 5V to application processor, audio codec, and Wi-Fi/BT module in head unit with aggressive thermal constraints. IC Role / Device Role / Timing Role: Synchronous buck converter with multi-phase support enabling scalable power delivery as SoC complexity increases. Use Value: MeshConnect™ package and 5.2°C/W θJC enable 4A operation without external heatsink in confined enclosure space. | Use Scenario: Powering GPS/GNSS receiver, cellular modem, and secure MCU in fleet management telematics control units. IC Role / Device Role / Timing Role: Always-on 5V supply with 1µA shutdown current and robust transient immunity for long-term battery-backed operation. Use Value: AAM mode achieves >85% efficiency at 1mA load - extends backup battery life from days to weeks during vehicle dormancy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4340JGLE-5-AEC1-Z | QFN-19 package with extra NC pin and dedicated SYNCIN/MODE pin (separate from SYNCO); identical electrical specs. | Supports more flexible multi-phase synchronization topology due to isolated SYNCIN and SYNCO pins. | Select when designing multi-phase systems requiring independent sync input/output routing or enhanced layout isolation. |
| TPS54560QDGQRQ1 | 4.5V–60V input, 5A output, 3.5µA IQ; no multi-phase support; different pinout and compensation scheme. | Lacks ICS pin and phase-shift capability; requires external current-sharing circuitry for >5A scaling. | Choose if wider input range (up to 60V) is required for heavy-duty truck applications, accepting trade-offs in multi-phase flexibility and footprint. |
Compared with MPQ4340JGLE-5-AEC1-Z, this part saves board space with QFN-17 but shares the same thermal performance and feature set; versus TPS54560QDGQRQ1, it offers superior multi-phase integration and lower quiescent current, making it preferable for compact, scalable automotive power designs.
Availability
MPQ4340GLE-5-AEC1-Z is available at Aetrix Electronics and suitable for automotive instrument clusters, ADAS camera modules, infotainment head units, and industrial vehicle telematics requiring stable component supply across extended temperature and lifetime requirements.
Supply support for MPQ4340GLE-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, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.
The MPQ4340 series belongs to MPS's automotive-grade DC/DC converter product line, engineered specifically for demanding automotive power rails where AEC-Q100 qualification, ultra-low IQ, and multi-phase scalability are mandatory.
FAQ
What is the recommended input capacitor for MPQ4340GLE-5-AEC1-Z?
Use a minimum 22µF X5R/X7R ceramic capacitor rated ≥50V placed as close as possible to the VIN and PGND pins. For optimal EMI suppression, add a 100nF high-frequency ceramic in parallel. Total effective capacitance should exceed 30µF to handle 42V load dump energy without exceeding voltage rating.
Does MPQ4340GLE-5-AEC1-Z require external compensation?
No - the MPQ4340GLE-5-AEC1-Z uses internal compensation optimized for its fixed 5V output and integrated MOSFETs. External compensation components are not needed; only standard input/output capacitors and the inductor are required for basic operation.
How is the power-good (PG) signal configured for 5V output?
The PG pin is open-drain and requires an external pull-up resistor (typically 10kΩ to 5V). It asserts high when VOUT is within 94–106% of 5.0V (i.e., 4.7V–5.3V); falls low if VOUT drops below 4.65V or rises above 5.35V. Deglitch time is 50µs to reject noise-induced false triggers.
Can MPQ4340GLE-5-AEC1-Z operate in forced continuous conduction mode (FCCM)?
Yes - pulling the SYNCIN/MODE pin high (≥1.8V) forces FCCM operation, eliminating pulse skipping and ensuring constant switching frequency even at light loads. This mode improves EMI predictability and reduces output voltage ripple at the expense of slightly higher light-load quiescent current (~1200µA vs. 3µA in AAM).
What is the thermal pad soldering requirement for QFN-17?
The exposed thermal pad on the QFN-17 package must be soldered to a solid copper thermal land connected to internal ground planes via ≥4 thermal vias (0.3mm diameter, filled or capped). Insufficient thermal pad soldering causes junction temperature to exceed 150°C at 4A, triggering thermal shutdown.
Is the 5V output adjustable via feedback resistors?
No - MPQ4340GLE-5-AEC1-Z is a fixed 5V output variant. The feedback divider is internal; external resistors cannot adjust VOUT. For adjustable output, select the MPQ4340GQ-AEC1-Z (with external FB pin) or consult MPS for custom-programmed versions.
How does the ICS pin function in multi-phase configurations?
In multi-phase setups, all ICS pins are connected together and terminated to a common 100kΩ resistor to AGND. This creates a shared current-sense bus that dynamically balances phase currents within ±5% tolerance, eliminating need for matched inductors or external current-sense amplifiers.
MPQ4340GLE-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:
- 4A
- 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)
MPQ4340GLE-5-AEC1-Z FAQ
1.How can I place an order for MPQ4340GLE-5-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4340GLE-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 MPQ4340GLE-5-AEC1-Z reliable?
The price and inventory of MPQ4340GLE-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 MPQ4340GLE-5-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ4340GLE-5-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4340GLE-5-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4340GLE-5-AEC1-Z?
MPQ4340GLE-5-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4340GLE-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 MPQ4340GLE-5-AEC1-Z?
For technical support, including MPQ4340GLE-5-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4340GLE-5-AEC1-Z requirements.
6.How does Aetrix verify that MPQ4340GLE-5-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ4340GLE-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 MPQ4340GLE-5-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ4340GLE-5-AEC1-Z?
All MPQ4340GLE-5-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4340GLE-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 MPQ4340GLE-5-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ4340GLE-5-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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