My Inquiry
My Account
Monolithic Power Systems Inc. MPQ4347GLE-5-AEC1-Z
- Part No.:
- MPQ4347GLE-5-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 17-PowerVFQFN
- Datasheet:
-
MPQ4347GLE-5-AEC1-Z.pdf
- Description:
- IC REG BUCK 5V 4A 17QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,493
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MPQ4347GLE-5-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, synchronous step-down DC/DC converter delivering 4A continuous output at fixed 5V with ultra-low 1µA shutdown current and 3.3V–36V input range. It integrates 60mΩ high-side and 35mΩ low-side MOSFETs, supports 350kHz–2.5MHz configurable switching frequency, and features zero-delay PWM control, power-good (PG) monitoring, and cold-crank low-dropout mode for automotive infotainment and ADAS power rails.
For engineers reviewing the MPQ4347GLE-5-AEC1-Z datasheet, MPQ4347GLE-5-AEC1-Z pinout, MPQ4347GLE-5-AEC1-Z application, or MPQ4347GLE-5-AEC1-Z equivalent, key selection criteria include its 42V load-dump tolerance, AAM/FCCM mode flexibility, wettable-flank QFN-17 package for automated optical inspection, and ±1.2% output voltage accuracy over –40°C to +150°C junction temperature.
Technical Context
The MPQ4347GLE-5-AEC1-Z implements a fixed-frequency, zero-delay PWM controller with internal gate drivers optimized for fast transient response in automotive environments. Its dual-mode operation-Advanced Asynchronous Modulation (AAM) under light loads and Forced Continuous Conduction Mode (FCCM) under heavy loads-enables high efficiency across 0.1mA–4A output current while maintaining tight regulation.
Thermal management is enhanced by MeshConnect™ flip-chip packaging and integrated thermal shutdown (150°C trip, 20°C hysteresis). The device supports external synchronization, programmable soft-start via capacitor, and configurable frequency setting through a single resistor on the FREQ pin-enabling EMI optimization per CISPR25 Class 5 requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±1.2% over –40°C to +150°C; enables direct powering of MCU cores and sensors without external feedback resistors. |
| Input Voltage Range | 3.3V to 36V with 42V load-dump survival; supports full automotive battery range including cold-crank (3.1V) and transients. |
| Continuous Output Current | 4A at ambient; sustained delivery enabled by internal 60mΩ HS-FET and 35mΩ LS-FET with thermal derating per θJA = 44.7°C/W. |
| Quiescent Current | 1µA in shutdown, 3µA in sleep mode; extends battery life in always-on vehicle modules like telematics and domain controllers. |
| Switching Frequency | Configurable 350kHz–2.5MHz via FREQ pin resistor; allows trade-off between inductor size, efficiency, and EMI compliance (CISPR25 Class 5). |
| Power Good Threshold | 94%–106% of nominal VOUT (4.7V–5.3V); open-drain PG signal provides reliable system-level power sequencing and fault detection. |
| Operating Junction Temp | –40°C to +150°C; validated for under-hood and cockpit applications per AEC-Q100 Grade 1 reliability standards. |
Pinout & Package
The MPQ4347GLE-5-AEC1-Z is housed in a wettable-flank QFN-17 (3mm × 4mm) package with exposed thermal pad, rated MSL Level 1 and compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SS | Soft-start input | Sources 10µA to external capacitor; controls ramp rate of output voltage to limit inrush current during power-up. |
| 2 FREQ | Frequency configuration | Resistor-to-ground sets fSW from 350kHz to 2.5MHz; enables EMI tuning and inductor size optimization. |
| 3 SYNCIN/MODE | Sync input & mode select | Pull low for AAM (light-load efficiency), pull high for FCCM (low-noise steady-state), or drive with external clock for synchronization. |
| 4,11 VIN | Main input supply | Accepts 3.3V–36V; powers internal circuitry and switches; requires local ceramic decoupling for noise suppression. |
| 5,10 PGND | Power ground | High-current return path for HS/LS FETs; must be connected to PCB ground plane with low-inductance layout. |
| 6 BST | Bootstrap supply | Drives HS-FET gate; requires 0.1µF ceramic capacitor between BST and SW pins for proper high-side gate charging. |
| 7,8 SW | Switch node | Connection point between internal HS/LS FETs; routes to external inductor; critical for EMI and thermal performance. |
| 9 EN | Enable control | Active-high logic input; <0.85V disables regulator (1µA IQ), >1V enables operation; no internal pull-up. |
| 12 SYNCO | Synchronization output | Open-drain clock output phase-aligned to internal oscillator or SYNCIN; optional for multi-rail timing coordination. |
| 13 PG | Power good indicator | Open-drain status flag; pulled high externally; asserts low if VOUT falls outside 94%–106% window. |
| 14 DNU | Do Not Use | Must be connected directly to VCC; floating causes undefined behavior and potential malfunction. |
| 15 VCC | Bias supply | Internal 5V LDO output; powers control logic and gate drivers; requires 1µF ceramic capacitor to AGND. |
| 16 AGND | Analog ground | Reference for feedback, PG, and soft-start circuits; separate from PGND to minimize noise coupling. |
| 17 VOUT | Regulated output sense | Direct connection point to output capacitor; used internally for feedback; must be routed with minimal trace length. |
Key Features
| Feature | Design Value |
|---|---|
| Wettable-flank QFN-17 package | Enables automated optical inspection (AOI) of solder joints for automotive-grade manufacturing traceability and reliability assurance. |
| AEC-Q100 Grade 1 qualification | Validated for operation from –40°C to +150°C junction temperature with full stress testing per automotive reliability standards. |
| Zero-delay PWM control | Minimizes output voltage deviation during load transients-critical for powering real-time ADAS processors and radar SoCs. |
| Configurable spread-spectrum modulation | Reduces peak EMI emissions by spreading switching energy across frequency band-meets CISPR25 Class 5 without added shielding. |
| Low-dropout (LDO) mode | Maintains regulation down to VIN = VOUT + 0.3V during cold-crank events, preventing system brownout when battery dips to 3.1V. |
| Integrated over-current protection | Hiccup-mode OCP limits fault energy during short-circuit conditions, protecting both IC and downstream circuitry without latch-up. |
Applications
| Automotive Infotainment | ADAS Camera Modules |
|---|---|
Use Scenario: Powering SoC, display interface, and audio codec in head-unit systems operating across battery voltage swings and thermal extremes. IC Role / Device Role / Timing Role: Primary 5V buck regulator supplying core logic and memory subsystems with tight line/load regulation and fast transient response. Use Value: 1µA shutdown current extends standby time; 42V load-dump tolerance prevents damage during alternator surge events. | Use Scenario: Providing stable 5V rail to image sensor, ISP, and serializer in surround-view or forward-facing camera ECUs. IC Role / Device Role / Timing Role: High-efficiency intermediate bus converter enabling compact, fanless camera housing design with minimal thermal rise. Use Value: AAM mode achieves >85% efficiency at 1mA load; zero-delay PWM ensures clean power during rapid scene changes and exposure adjustments. |
| Automotive Clusters | Industrial Vehicle Telematics |
Use Scenario: Delivering regulated 5V to digital instrument cluster microcontrollers, TFT backlight drivers, and CAN transceivers. IC Role / Device Role / Timing Role: Main power stage supporting dynamic brightness control and real-time gauge updates with low output ripple. Use Value: PG signal enables safe boot sequencing; thermal shutdown (150°C) ensures fail-safe operation during prolonged sunload exposure. | Use Scenario: Powering LTE/V2X modems, GNSS receivers, and secure boot MCUs in fleet management gateways deployed in harsh mobile environments. IC Role / Device Role / Timing Role: Robust front-end DC/DC converter handling wide-input industrial battery systems (12V/24V) and vibration-prone mounting. Use Value: Wettable flanks ensure solder joint integrity after thermal cycling; MSL Level 1 supports long-term storage and JIT assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4347JGLE-5-AEC1-Z | QFN-19 package with wettable flanks; adds NC pin and dedicated SYNCIN/MODE pin separation vs. shared function on MPQ4347. | Same electrical specs but improved manufacturability for AOI; preferred for new designs requiring higher process yield verification. | Select when board space permits larger footprint and AOI coverage is mandatory for Tier-1 automotive production. |
| TPS54560QDGQRQ1 | 4.5V–60V input, 5A output, 3.5µA IQ; uses external MOSFETs; no integrated BST capacitor support. | Lacks integrated power FETs and wettable flanks; requires more external components and layout effort for equivalent performance. | Choose only if input voltage exceeds 36V or higher output current margin is required beyond 4A continuous. |
Compared with MPQ4347JGLE-5-AEC1-Z, this part offers identical regulation and protection but in a smaller QFN-17 footprint; versus TPS54560QDGQRQ1, it delivers lower BOM count, superior light-load efficiency, and automotive-optimized packaging without sacrificing thermal or EMI performance.
Availability
MPQ4347GLE-5-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, instrument clusters, and industrial telematics requiring stable component supply with full AEC-Q100 traceability and long-term lifecycle support.
Supply support for MPQ4347GLE-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 distribution through authorized partners.
This device belongs to MPS's automotive-grade MPQ series, engineered specifically for demanding vehicular power conversion tasks-including cold-crank resilience, load-dump survival, and extended temperature operation-while minimizing external component count.
FAQ
What is the minimum input voltage required for startup?
The MPQ4347GLE-5-AEC1-Z has a VIN UVLO rising threshold of 2.8V to 3.2V, allowing reliable startup during automotive cold-crank events down to 3.1V. Below this threshold, the device remains disabled with only 1µA shutdown current drawn.
How does the AAM mode improve light-load efficiency?
AAM mode reduces switching frequency under light loads to minimize gate-driving and switching losses, achieving >85% efficiency at 1mA output. This is implemented automatically when SYNCIN/MODE is pulled low, without requiring external control signals.
Can the output voltage be adjusted externally?
No-the MPQ4347GLE-5-AEC1-Z is a fixed 5V output variant. Output voltage is trimmed at wafer test and cannot be modified; for adjustable versions, refer to the MPQ4347 family's resistor-programmable variants (e.g., MPQ4347GLE-ADJ-AEC1-Z).
What is the purpose of the DNU pin?
Pin 14 is designated Do Not Use and must be connected directly to VCC. Leaving it floating may cause internal logic instability or erratic enable behavior; this connection ensures proper biasing of internal reference circuitry.
Is the BST capacitor value dependent on switching frequency?
Yes-the recommended BST capacitor (0.1µF X7R ceramic) is validated for stable high-side gate drive across the full 350kHz–2.5MHz range. Larger values do not improve performance and may degrade startup timing or cause oscillation.
Does the PG signal 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) with a 10kΩ resistor. Without pull-up, the signal remains undriven and cannot indicate power-good status to system controllers.
How is thermal performance affected by PCB layout?
Thermal resistance θJA = 44.7°C/W assumes a 4-layer board with 2oz copper and thermal vias under the exposed pad. Reducing copper area or omitting vias increases junction temperature by up to 30°C at 4A load, potentially triggering thermal shutdown.
MPQ4347GLE-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)
MPQ4347GLE-5-AEC1-Z FAQ
1.How can I place an order for MPQ4347GLE-5-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4347GLE-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 MPQ4347GLE-5-AEC1-Z reliable?
The price and inventory of MPQ4347GLE-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 MPQ4347GLE-5-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ4347GLE-5-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4347GLE-5-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4347GLE-5-AEC1-Z?
MPQ4347GLE-5-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4347GLE-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 MPQ4347GLE-5-AEC1-Z?
For technical support, including MPQ4347GLE-5-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4347GLE-5-AEC1-Z requirements.
6.How does Aetrix verify that MPQ4347GLE-5-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ4347GLE-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 MPQ4347GLE-5-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ4347GLE-5-AEC1-Z?
All MPQ4347GLE-5-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4347GLE-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 MPQ4347GLE-5-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ4347GLE-5-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPQ4347GLE-5-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…
