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Monolithic Power Systems Inc. MPQ4576GQBE-AEC1-P
- Part No.:
- MPQ4576GQBE-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 12-VFQFN
- Datasheet:
-
MPQ4576GQBE-AEC1-P.pdf
- Description:
- IC REG BUCK ADJ 600MA 12QFN
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
MPQ4576GQBE-AEC1-P from Monolithic Power Systems is a fully integrated, AEC-Q100 qualified synchronous buck converter delivering 600mA continuous output current with 4.5V–60V input range, 0.8V reference voltage, and 400kHz typical switching frequency. It integrates high-side and low-side MOSFETs, supports advanced asynchronous mode (AAM) and forced CCM, and features power good (PG), enable (EN), and SYNC output for automotive infotainment and lamp control systems.
For engineers reviewing the MPQ4576GQBE-AEC1-P datasheet, MPQ4576GQBE-AEC1-P pinout, MPQ4576GQBE-AEC1-P application, or MPQ4576GQBE-AEC1-P equivalent, key selection criteria include cold-crank operation down to 4V, load-dump tolerance up to 65V, integrated compensation, QFN-12 wettable flank package, and AEC-Q100 Grade 1 qualification for under-hood automotive use.
Technical Context
The MPQ4576GQBE-AEC1-P employs peak-current-mode control with valley-current OCP and zero-current detection for light-load efficiency optimization. Its internal 0.8V reference error amplifier drives regulation via external resistor divider on FB, while the CCM/SYNCO pin enables mode selection (AAM/FCCM) or 180° out-of-phase clock synchronization.
It integrates bootstrap (BST) and gate drivers for its internal 150mΩ/30mΩ (typ) high-side/low-side FETs, supports programmable fSW (300–2700kHz) via FREQ resistor, and delivers hiccup-mode SCP, thermal shutdown at 170°C, and PG monitoring across ±16% VOUT window with 70μs rise/fall delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 60V - supports 12V/24V/36V automotive systems including cold-crank (down to 4V) and load-dump (up to 65V) |
| Output Current | 600mA continuous - sufficient for powering microcontrollers, sensors, and LED drivers in automotive modules |
| Reference Voltage | 0.800V ±1% - sets precise output regulation via external resistor divider; stable over -40°C to +125°C |
| Switching Frequency | 400kHz typical (300–500kHz range with 76.8kΩ) - balances EMI, efficiency, and inductor size for compact designs |
| Quiescent Current | 40μA in standby - extends battery life in always-on vehicle subsystems such as telematics and body control units |
| Thermal Protection | Auto-recovery thermal shutdown at 170°C - prevents permanent damage during sustained overload or poor PCB heatsinking |
| Package | QFN-12 (2.5mm × 3mm) with wettable flanks - enables automated optical inspection (AOI) and robust solder joint reliability for automotive reflow |
Pinout & Package
MPQ4576GQBE-AEC1-P is housed in a thermally enhanced QFN-12 (2.5mm × 3mm) package with wettable flanks for automotive-grade solder joint inspection. The exposed thermal pad must be connected to a large GND copper area for optimal thermal performance (θJC = 11°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 BST | Bootstrap supply | Connects capacitor between SW and BST to generate floating gate drive voltage for high-side FET |
| 2 SW | Switch node | High-current output of internal power switches; requires wide PCB trace and low-inductance layout |
| 3 PG | Power good indicator | Open-drain output asserting high when VOUT is within 90–108% of nominal; falls below 84% or above 116% |
| 4 FB | Feedback input | Negative input of error amplifier (0.8V ref); used for output regulation and UVLO monitoring |
| 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 |
| 7,8 GND | Ground reference | Common return for power and signal; connect to large copper pour tied to input/output capacitor negatives |
| 9,10 NC | No connection | May be tied to GND to improve thermal dissipation and reduce EMI radiation |
| 11 CCM/SYNCO | Mode select / sync output | Pull to GND via 10–300kΩ for FCCM; float for AAM; outputs 180° out-of-phase clock for multi-phase sync |
| 12 EN | Enable control | Active-high logic: >1.45V turns on; <1.12V shuts down with 2μA quiescent current |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high- and low-side MOSFETs | 150mΩ/30mΩ (typ) RDS(ON) at 25°C eliminates need for external Schottky diode and reduces BOM count |
| Advanced Asynchronous Mode (AAM) | Reduces switching losses at light loads by scaling fSW dynamically - achieves >85% efficiency at 10mA output |
| MeshConnect™ flip-chip packaging | Minimizes parasitic inductance and improves EMI performance - meets CISPR25 Class 5 radiated/conducted limits |
| AEC-Q100 Grade 1 qualification | Validated for operation from -40°C to +125°C junction temperature - suitable for engine bay and front-end applications |
| Low-dropout and high-duty-cycle mode | Maintains regulation during cold-crank events (VIN down to 4V) without dropout or reset |
Applications
| Automotive Infotainment | Automotive Lamps and LEDs |
|---|---|
|
Use Scenario: Powering display controllers, audio DSPs, and USB-C PD interface ICs in head units and digital clusters. IC Role / Device Role / Timing Role: Primary 5V/3.3V point-of-load regulator with fast transient response to handle burst-mode processor loads. Use Value: 91% efficiency at 600mA (24V→5V) minimizes heat buildup in sealed enclosures; PG signal enables system-level power sequencing. |
Use Scenario: Driving interior ambient lighting, dashboard backlighting, and adaptive headlamp modules. IC Role / Device Role / Timing Role: Constant-voltage source regulating LED driver IC inputs; supports dimming via EN modulation. Use Value: 40μA quiescent current prevents battery drain during vehicle sleep mode; AAM maintains efficiency across 1–600mA LED current range. |
| Automotive Motor Control | Industrial Power Systems |
|
Use Scenario: Supplying gate drivers and position sensor interfaces for BLDC fans, HVAC actuators, and wiper motors. IC Role / Device Role / Timing Role: Robust 60V-input regulator tolerant of load dump transients and reverse-battery protection circuits. Use Value: Withstands 65V load dump pulses without latch-off; hiccup-mode SCP protects against stalled motor short-circuits. |
Use Scenario: Providing isolated auxiliary rails in industrial gateways, CAN bus nodes, and smart sensors deployed in harsh environments. IC Role / Device Role / Timing Role: High-reliability DC-DC stage replacing discrete buck solutions where AEC-Q100 compliance adds functional safety margin. Use Value: QFN-12 wettable flank package ensures IPC-A-610 Class 3 solder joint integrity; internal compensation simplifies design validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4572GQ-AEC1-P | Lower 300mA output current; identical 4.5–60V input and AEC-Q100 Grade 1 rating | Suitable for lower-power domains like sensor hubs or CAN transceivers, not lamp drivers or motor control | Select when 300mA suffices and board space or cost constraints favor smaller solution size |
| TPS54360BQPWPRQ1 | TI part with 3.5–60V input, 3.5A output, no integrated compensation; requires external loop compensation | Higher current capability but larger BOM and layout complexity; lacks AAM for ultra-low IQ | Choose only if >600mA output or adjustable soft-start timing is required; verify thermal derating in same footprint |
Compared with MPQ4572GQ-AEC1-P, the MPQ4576GQBE-AEC1-P doubles output current while retaining identical automotive qualification and package; versus TPS54360BQPWPRQ1, it trades higher current for significantly reduced design effort via internal compensation and superior light-load efficiency.
Availability
MPQ4576GQBE-AEC1-P is available at Aetrix Electronics and suitable for automotive infotainment, LED lighting, and motor control applications requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for MPQ4576GQBE-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 battery management.
The MPQ4576 belongs to MPS's automotive-qualified buck converter product line, designed specifically for under-hood and cabin applications demanding high input voltage tolerance, low quiescent current, and robust protection features.
FAQ
What is the minimum input voltage for cold-crank operation?
The MPQ4576GQBE-AEC1-P maintains regulation down to 4.0V input during cold-crank events, enabled by its high-duty-cycle mode and low dropout characteristics. This is validated per AEC-Q100 test conditions and confirmed in typical performance curves (Figure 20, page 20).
Does the device require external compensation components?
No - the MPQ4576GQBE-AEC1-P features fully internal compensation, eliminating the need for external Type-II or Type-III compensation networks. This reduces design time and PCB area while maintaining stability across all operating conditions.
How is the switching frequency set and what range is supported?
Switching frequency is set by connecting a resistor from the FREQ pin to GND: 76.8kΩ yields 400kHz (typ), 28kΩ yields 1MHz, and 12.1kΩ yields 2.2MHz. The device supports 300kHz to 2700kHz across its full operating range.
What protection features are included and how do they behave?
The device integrates valley-current OCP, hiccup-mode SCP, thermal shutdown (170°C with 25°C hysteresis), input UVLO (4.0V rising threshold), and PG monitoring. All protections auto-recover except thermal shutdown, which resets after junction cools below 145°C.
Is the QFN-12 package lead-free and RoHS compliant?
Yes - MPQ4576GQBE-AEC1-P is lead-free, halogen-free, and fully compliant with the EU RoHS directive. The wettable flank structure supports automated optical inspection (AOI) and meets IPC-A-610 Class 3 requirements for automotive assembly.
Can the CCM/SYNCO pin be used for both mode selection and clock synchronization?
Yes - the CCM/SYNCO pin serves dual functions: pulling it to GND selects forced CCM mode, while leaving it floating enables AAM; additionally, it outputs a 180° phase-shifted clock signal usable for synchronizing multiple converters in multi-rail systems.
What is the typical efficiency at 600mA output with 24V input?
At VIN = 24V, VOUT = 5V, IOUT = 600mA, fSW = 400kHz, and AAM mode, typical efficiency is 91%, as measured on the EVQ4576-QB-00A evaluation board using a 15μH inductor (XAL6060-153MEB/C).
MPQ4576GQBE-AEC1-P 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-P FAQ
1.How can I place an order for MPQ4576GQBE-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4576GQBE-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 MPQ4576GQBE-AEC1-P reliable?
The price and inventory of MPQ4576GQBE-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 MPQ4576GQBE-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPQ4576GQBE-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4576GQBE-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4576GQBE-AEC1-P?
MPQ4576GQBE-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4576GQBE-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 MPQ4576GQBE-AEC1-P?
For technical support, including MPQ4576GQBE-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4576GQBE-AEC1-P requirements.
6.How does Aetrix verify that MPQ4576GQBE-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPQ4576GQBE-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 MPQ4576GQBE-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPQ4576GQBE-AEC1-P?
All MPQ4576GQBE-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4576GQBE-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 MPQ4576GQBE-AEC1-P part is unused and in its original packaging.
Return procedure for MPQ4576GQBE-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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