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Monolithic Power Systems Inc. MPQ4576GQBE-AEC1-Z
- Part No.:
- MPQ4576GQBE-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 12-VFQFN
- Datasheet:
-
MPQ4576GQBE-AEC1-Z.pdf
- Description:
- IC REG BUCK ADJ 600MA 12QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,498
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Product details
Overview
MPQ4576GQBE-AEC1-Z from Monolithic Power Systems is a fully integrated, AEC-Q100 qualified synchronous buck converter delivering up to 600mA continuous output current with 4.5V–60V input range, 0.8V feedback reference, and integrated high-side/low-side MOSFETs. It supports automotive cold-crank (down to 4V) and load-dump (up to 65V), operates in advanced asynchronous mode (AAM) or forced continuous conduction mode (FCCM), and features power good (PG), soft start, and SYNC output - deployed in infotainment power rails and LED lamp drivers.
For engineers reviewing the MPQ4576GQBE-AEC1-Z datasheet, MPQ4576GQBE-AEC1-Z pinout, MPQ4576GQBE-AEC1-Z application, or MPQ4576GQBE-AEC1-Z equivalent, key selection criteria include its 60V absolute max input rating, QFN-12 wettable flank package, valley-current OCP, hiccup-mode short-circuit protection, and configurable switching frequency via external resistor on FREQ pin.
Technical Context
The MPQ4576GQBE-AEC1-Z employs peak-current-mode control with valley-current over-current protection and zero-current detection for light-load efficiency optimization. Its internal compensation network eliminates external loop components, while the CCM/SYNCO pin enables dual functionality: mode selection (AAM/FCCM) and 180° phase-shifted clock output for multi-phase synchronization.
It integrates a 150mΩ high-side and 30mΩ low-side MOSFET (typ. at 25°C), supports cold-crank operation via low-dropout mode, and uses MeshConnect™ flip-chip packaging to reduce EMI and avoid AM band interference. The device meets CISPR25 Class 5 radiated/conducted emissions requirements when used with the recommended EMI filter and XAL4040-153MEB inductor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 60V - supports 12V/24V/36V automotive systems including cold-crank (4V) and load-dump (65V abs max). |
| Output Current | 600mA continuous - sufficient for powering microcontrollers, sensors, and LED drivers in automotive ECUs. |
| Feedback Reference | 0.800V ±1% - enables precise output regulation using standard resistor dividers; used by PG and UVLO circuits. |
| Quiescent Current | 40µA in standby - extends battery life in always-on vehicle modules like telematics and body controllers. |
| Switching Frequency | 300kHz–2.2MHz (resistor-programmable) - allows trade-off between efficiency, size, and EMI; avoids AM radio band (530–1710kHz) in AAM. |
| Thermal Performance | <8°C junction rise at 600mA/400kHz - enables compact layout without heatsink on 4-layer PCB per JESD51-7 EVB. |
| Protections | Hiccup-mode SCP, valley-current OCP, thermal shutdown (170°C), UVLO (4.0V rising), and PG monitoring (±10% window). |
Pinout & Package
MPQ4576GQBE-AEC1-Z is housed in a wettable flank QFN-12 package (2.5mm × 3mm, 0.5mm pitch), optimized for automated optical inspection (AOI) and thermal performance. Exposed thermal pad must be soldered to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 BST | Bootstrap supply | Provides floating gate drive for high-side MOSFET; requires ceramic capacitor (e.g., 0.1µF) between BST and SW. |
| 2 SW | Power switch node | Drives external inductor; requires wide copper trace and tight layout to minimize ringing and EMI. |
| 3 PG | Power good indicator | Open-drain output asserting high when VOUT is within 90–108% of target; falls below 84% or above 116%. |
| 4 FB | Feedback input | Connects to resistor divider; internal 0.8V reference sets output voltage (e.g., 5V = R1/R2 = 5.25). |
| 5 FREQ | Frequency programming | Resistor-to-GND sets fSW: 76.8kΩ → 400kHz, 28kΩ → 1MHz, 12.1kΩ → 2.2MHz. |
| 6 VCC | Bias supply | Internal LDO output; requires ≥1µF ceramic decoupling capacitor placed adjacent to pin. |
| 7 GND | Ground reference | Primary IC ground; connects to large copper pour under thermal pad and input/output capacitors. |
| 8 IN | Main input supply | Accepts full 4.5–60V range; requires local 10µF+ ceramic input capacitor near pin. |
| 9,10 NC | No connection | May be tied to GND to improve thermal dissipation and reduce EMI coupling. |
| 11 CCM/SYNCO | Mode select / sync output | Pull to GND via 10–300kΩ for FCCM; float for AAM; outputs 180° out-of-phase clock when active. |
| 12 EN | Enable control | Active-high logic: >1.45V enables, <1.12V disables; 330mV hysteresis prevents chatter during ramp. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high- and low-side MOSFETs | 150mΩ/30mΩ RDS(ON) (typ.) eliminates need for external Schottky diode and reduces BOM count. |
| Advanced Asynchronous Mode (AAM) | Dynamically scales switching frequency under light load to maintain >85% efficiency at 1mA output. |
| Wettable flank QFN-12 package | Enables reliable AOI inspection of solder joints and improves thermal resistance (θJC = 11°C/W on EVB). |
| Automotive-grade protections | Cold-crank support (4V VIN), 65V load-dump tolerance, hiccup SCP, and auto-recovery thermal shutdown. |
| EMI-optimized architecture | MeshConnect™ flip-chip design and internal gate drivers reduce dv/dt noise; passes CISPR25 Class 5 with filter. |
Applications
| Automotive Infotainment Power | Automotive LED Headlamp Driver |
|---|---|
|
Use Scenario: Supplies stable 5V/3.3V rail to SoC, audio codec, and display controller in head unit under wide input transients. IC Role / Device Role / Timing Role: Primary DC-DC regulator with PG signaling to enable downstream sequencers and monitor rail health. Use Value: Maintains regulation during 4V cold-crank and 65V load-dump events; 40µA quiescent current minimizes battery drain in sleep mode. |
Use Scenario: Powers LED driver ICs in adaptive front lighting systems (AFS), requiring clean, ripple-free bias under engine cranking. IC Role / Device Role / Timing Role: Pre-regulator stepping down 12V/24V battery to 7V intermediate rail for constant-current LED controllers. Use Value: Low-noise AAM operation suppresses conducted EMI into sensitive analog LED current sense paths; PG confirms valid rail before enabling LEDs. |
| Automotive Body Control Module | Industrial Vehicle Telematics |
|
Use Scenario: Powers MCU, CAN transceiver, and sensor interface in door module or seat controller exposed to harsh automotive environments. IC Role / Device Role / Timing Role: System power manager with EN-controlled sequencing and thermal derating capability. Use Value: AEC-Q100 Grade 1 qualification (-40°C to +125°C TJ), hiccup SCP protects against wiring faults, and internal soft start prevents inrush stress. |
Use Scenario: Provides isolated 5V supply for GPS/GNSS receiver, cellular modem, and secure boot MCU in fleet management units. IC Role / Device Role / Timing Role: Primary buck converter in power tree with SYNC output coordinating multiple converters to reduce beat-frequency noise. Use Value: CCM/SYNCO pin enables synchronized 180° phase shift across parallel rails, lowering input capacitor RMS current and improving EMI margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4570GQ-AEC1 | Lower 400mA output current; identical 4.5–60V input, same QFN-12 package, but no SYNC output or CCM/SYNCO pin. | Suitable for lower-power nodes (e.g., sensor hubs) where multi-phase sync is unnecessary. | Select MPQ4570GQ-AEC1 only if 400mA suffices and synchronization is not required - saves cost and simplifies layout. |
| TPS54360BQPWPRQ1 | TI part with 3.5–60V input, 3.5A output, external compensation, and different pinout; lacks wettable flank and AAM mode. | Used in higher-current applications but requires more external components and has higher IQ (14µA vs. 40µA in AAM). | Choose TPS54360BQPWPRQ1 only when >600mA output or adjustable compensation is mandatory - not drop-in compatible. |
Compared with MPQ4576GQBE-AEC1-Z, MPQ4570GQ-AEC1 trades output current and sync capability for cost reduction, while TPS54360BQPWPRQ1 offers higher current at the expense of board area, efficiency at light load, and AEC-Q100-compliant EMI performance.
Availability
MPQ4576GQBE-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment, LED lighting, and body control module designs requiring stable component supply, AEC-Q100 qualification, and production-ready EMI compliance.
Supply support for MPQ4576GQBE-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 core expertise in DC-DC conversion, motor drivers, and LED lighting controllers.
The MPQ4576 belongs to MPS's automotive-qualified buck converter product line, designed specifically for harsh-environment 12V/24V/36V systems requiring cold-crank resilience, low quiescent current, and CISPR25-compliant EMI behavior.
FAQ
What is the maximum allowable input voltage for MPQ4576GQBE-AEC1-Z?
The absolute maximum input voltage is 65V, verified per datasheet ABSOLUTE MAXIMUM RATINGS. Continuous operation is rated up to 60V. This withstands automotive load-dump transients defined in ISO 7637-2 Pulse 5a, making it suitable for 24V commercial vehicle systems.
Does MPQ4576GQBE-AEC1-Z require an external bootstrap capacitor?
Yes - a 0.1µF ceramic capacitor must be placed between BST and SW pins. This forms the floating supply for the high-side gate driver. Layout guidelines specify minimal loop area and direct placement adjacent to the IC to ensure reliable high-side switching.
How does the CCM/SYNCO pin function in AAM versus FCCM modes?
In AAM, CCM/SYNCO is left floating to enable frequency scaling at light loads. In FCCM, it is pulled to GND via 10–300kΩ to force fixed-frequency operation. When active, it also outputs a 180° phase-shifted clock signal usable for synchronizing secondary converters.
What is the purpose of the NC pins (9 and 10) on the QFN-12 package?
Pins 9 and 10 are no-connect terminals. They may be electrically tied to GND to enhance thermal conduction from the die to the PCB and reduce high-frequency coupling paths - a practice validated in MPS's EVB layout and thermal testing.
Can MPQ4576GQBE-AEC1-Z operate with an output voltage lower than 1V?
No - the datasheet specifies a minimum output voltage of 1V, constrained by the 0.8V internal reference and practical resistor-divider resolution. Attempting sub-1V regulation violates guaranteed operation and risks instability due to FB pin current error and noise sensitivity.
Is the PG pin actively driven or open-drain?
The PG pin is strictly open-drain. It requires an external pull-up resistor (typically 10kΩ to VOUT or system rail) to assert high when output voltage is within 90–108% of nominal. It pulls low during undervoltage (<84%) or overvoltage (>116%) conditions.
What thermal performance can be expected on a standard 2-layer PCB?
On a 2-layer board (1oz copper), θJA rises significantly versus the 4-layer EVB value of 45°C/W. Derating is required: at 600mA, junction temperature may exceed 125°C ambient without thermal vias or ground pour - use 4-layer with thermal vias for full-rated operation.
MPQ4576GQBE-AEC1-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 12-VFQFN
- 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):
- 4.5V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 54V
- Current - Output:
- 600mA
- Frequency - Switching:
- 400kHz ~ 2.2MHz
- 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 (2.5x3)
MPQ4576GQBE-AEC1-Z FAQ
1.How can I place an order for MPQ4576GQBE-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4576GQBE-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 MPQ4576GQBE-AEC1-Z reliable?
The price and inventory of MPQ4576GQBE-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 MPQ4576GQBE-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ4576GQBE-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4576GQBE-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4576GQBE-AEC1-Z?
MPQ4576GQBE-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4576GQBE-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 MPQ4576GQBE-AEC1-Z?
For technical support, including MPQ4576GQBE-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4576GQBE-AEC1-Z requirements.
6.How does Aetrix verify that MPQ4576GQBE-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ4576GQBE-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 MPQ4576GQBE-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ4576GQBE-AEC1-Z?
All MPQ4576GQBE-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4576GQBE-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 MPQ4576GQBE-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ4576GQBE-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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