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Monolithic Power Systems Inc. MPQ4576GQBE-P
- Part No.:
- MPQ4576GQBE-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 12-VFQFN
- Datasheet:
-
MPQ4576GQBE-P.pdf
- Description:
- IC REG BUCK ADJ 600MA 12QFN
- Quantity:
- Payment:
- Shipping:
Inventory:990
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Product details
Overview
MPQ4576GQBE-P 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 operates in advanced asynchronous mode (AAM) or forced continuous conduction mode (FCCM), supports cold-crank down to 4V, and targets automotive power rails for infotainment and LED drivers.
For engineers reviewing the MPQ4576GQBE-P datasheet, MPQ4576GQBE-P pinout, MPQ4576GQBE-P application, or MPQ4576GQBE-P equivalent, key selection criteria include its 2μA shutdown quiescent current, 91% efficiency at 24V→5V/600mA/400kHz, AEC-Q100 qualification, QFN-12 wettable flank package, and configurable switching frequency via external resistor on FREQ pin.
Technical Context
The MPQ4576GQBE-P employs peak-current-mode control with valley-current OCP and zero-current detection for light-load efficiency optimization. Its internal compensation network eliminates external loop components, while MeshConnect™ flip-chip packaging reduces EMI and enables operation outside the AM radio band.
It integrates dual MOSFETs with RDS(ON) of 250mΩ (HS) and 45mΩ (LS) at 25°C, supports programmable fSW from 300kHz to 2.2MHz via FREQ pin resistor, and features hiccup-mode SCP, thermal shutdown at 170°C, and PG output with ±16% voltage window.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 60V - supports automotive load dump (65V abs max) and cold-crank (down to 4V). |
| Output Current | 600mA continuous - sufficient for powering microcontrollers, sensors, and LED drivers in automotive ECUs. |
| Feedback Reference | 0.800V ±1% - enables precise output regulation with standard resistor divider; used by PG and UVLO circuits. |
| Quiescent Current | 40µA in standby - extends battery life in always-on vehicle modules like telematics or alarm systems. |
| Switching Frequency | Configurable 300–2200kHz via FREQ pin resistor - allows EMI tuning and inductor size optimization. |
| Thermal Protection | Auto-recovery thermal shutdown at 170°C - prevents permanent damage during sustained overload or poor PCB heatsinking. |
| Power Good Output | Open-drain PG with 90–108% VFB window - provides system-level power sequencing and fault indication without external comparators. |
Pinout & Package
MPQ4576GQBE-P is housed in a wettable flank QFN-12 package (2.5mm × 3mm, 0.5mm pitch), optimized for automated optical inspection (AOI) and thermal performance. The exposed thermal pad must be soldered to PCB ground plane for reliable operation at full load.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 BST | Bootstrap supply | Provides floating gate drive for high-side MOSFET; requires 0.1µF ceramic capacitor between BST and SW. |
| 2 SW | Switch node | High-current connection point for external inductor; demands wide copper trace and minimized loop area for EMI control. |
| 3 PG | Power good indicator | Open-drain output pulled low if VOUT deviates beyond ±16% of setpoint; requires external pull-up to system rail. |
| 4 FB | Feedback input | Inverting input of error amplifier; sets output voltage via resistor divider; also monitors VOUT for PG and UVLO. |
| 5 FREQ | Frequency programming | Resistor-to-ground 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 return path for power and signal; must connect to large copper pour shared with IN/OUT capacitors. |
| 8 IN | Main input supply | Accepts full 4.5–60V range; requires local 10µF+ ceramic input capacitor with low ESR near pin. |
| 9,10 NC | No connection | Internally unconnected; may be tied to GND to improve thermal dissipation and EMI shielding. |
| 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 synchronization. |
| 12 EN | Enable control | Active-high logic input; turns on device when >1.45V; hysteresis ensures noise immunity during power ramp. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Rated for -40°C to +125°C junction temperature - validated for under-hood automotive applications. |
| Integrated high- and low-side MOSFETs | RDS(ON) = 250mΩ (HS) / 45mΩ (LS) at 25°C - eliminates external diode and reduces BOM count and board space. |
| Advanced Asynchronous Mode (AAM) | Frequency scaling under light load - reduces switching and gate driver losses to maintain >85% efficiency at 1mA output. |
| MeshConnect™ flip-chip packaging | Lower parasitic inductance and improved thermal resistance (θJA = 45°C/W on EVB) - enhances EMI performance and thermal headroom. |
| Programmable soft-start | Fixed 0.45ms internal ramp - prevents inrush current and output overshoot during power-up without external capacitor. |
| Cold-crank low-dropout mode | Maintains regulation down to VIN = 4V at VOUT = 5V - sustains critical functions during engine start in 12V/24V systems. |
Applications
| Automotive Infotainment Power | Automotive LED Headlamp Driver |
|---|---|
|
Use Scenario: Powers display controller, audio DSP, and USB hub in center-stack infotainment units exposed to wide automotive input transients. IC Role / Device Role / Timing Role: Primary 5V/3.3V step-down regulator with AEC-Q100 compliance and load-dump tolerance. Use Value: Delivers stable 5V at 600mA while surviving 65V load dump pulses and cold-crank dips to 4V without dropout. |
Use Scenario: Supplies constant-current LED driver ICs in adaptive front lighting systems (AFS) requiring clean, regulated bias rails. IC Role / Device Role / Timing Role: Pre-regulator generating 12V intermediate rail for downstream LED current controllers. Use Value: Achieves 91% efficiency at 24V→12V/600mA, minimizing heat buildup in confined headlamp housings. |
| Automotive Motor Control MCU Supply | Industrial CAN Node Power |
|
Use Scenario: Powers 32-bit ARM Cortex-M7 MCU and gate drivers in electric power steering (EPS) or HVAC blower modules. IC Role / Device Role / Timing Role: High-reliability DC-DC converter with hiccup-mode SCP and thermal shutdown for safety-critical subsystems. Use Value: Provides fast transient response (<10µs PG delay) and robust overcurrent protection to prevent cascading failure during motor stall. |
Use Scenario: Supplies isolated CAN transceiver and microcontroller in industrial gateways operating from 24V DC field buses. IC Role / Device Role / Timing Role: Input-filtered buck converter with CISPR25 Class 5 EMI compliance for harsh electromagnetic environments. Use Value: Meets stringent radiated/conducted emissions limits without external EMI filters, reducing system cost and footprint. |
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 | 400mA output current, same 4.5–60V input, identical QFN-12 package and pinout. | Lower current rating limits use to sub-400mA loads like sensor nodes or low-power MCUs. | Select when 400mA suffices and board layout reuse is prioritized over higher current headroom. |
| TPS54360BQPWPRQ1 | 600mA, 3.5–60V input, external MOSFETs, no integrated compensation, larger HTSSOP-16 package. | Requires external loop compensation and discrete FETs; less compact but offers adjustable slope compensation and higher thermal margin. | Choose when design flexibility (e.g., custom inductor selection or external current sensing) outweighs integration benefits. |
Compared with MPQ4576GQBE-P, MPQ4572GQ-AEC1 trades 200mA output capacity for identical footprint and qualification, while TPS54360BQPWPRQ1 sacrifices integration and size for configurability and thermal headroom in thermally constrained designs.
Availability
MPQ4576GQBE-P is available at Aetrix Electronics and suitable for automotive infotainment, LED lighting, and motor control applications requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for MPQ4576GQBE-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 LED lighting controllers.
The MPQ4576 belongs to MPS's automotive-grade buck converter product line, designed specifically for harsh-environment applications demanding AEC-Q100 qualification, wide input range, and robust protection features.
FAQ
What is the minimum input voltage required for regulation at 5V output?
The MPQ4576GQBE-P maintains regulation down to 4V input during cold-crank conditions due to its low-dropout mode, enabling uninterrupted 5V output even when battery voltage sags below 6V during engine cranking in 12V systems.
Can the MPQ4576GQBE-P operate without an external bootstrap capacitor?
No - a 0.1µF ceramic capacitor must be placed between BST and SW pins to provide gate drive voltage for the high-side MOSFET; omission causes immediate functional failure and potential damage.
How does the CCM/SYNCO pin affect light-load efficiency?
When floated, CCM/SYNCO enables Advanced Asynchronous Mode (AAM), which scales switching frequency downward under light load to reduce gate driver and switching losses - improving efficiency from ~40% to >85% at 1mA output.
Is the PG pin compatible with 3.3V logic systems?
Yes - PG is open-drain and requires an external pull-up resistor; connecting the pull-up to 3.3V rail ensures valid logic levels for 3.3V microcontrollers, with sink capability rated for 4mA at ≤300mV saturation.
What thermal derating applies above 85°C ambient?
Using θJA = 45°C/W (EVB), maximum allowable power dissipation drops linearly: at 100°C ambient, PDMAX = (150°C − 100°C)/45°C/W = 1.11W - corresponding to ~550mA at 24V→5V (91% eff) before thermal shutdown activates.
Does the MPQ4576GQBE-P support synchronization to an external clock?
No - the CCM/SYNCO pin functions only as a synchronization *output*, providing a 180° phase-shifted clock for daisy-chaining other MPQ4576 devices; it does not accept external clock inputs for master-slave timing alignment.
What is the recommended PCB layout practice for the SW node?
The SW node must use a wide, short copper trace directly connected to the inductor and input/output capacitors, with minimal loop area to suppress high di/dt ringing; avoid routing sensitive signals (FB, PG, FREQ) beneath or adjacent to SW.
MPQ4576GQBE-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-P FAQ
1.How can I place an order for MPQ4576GQBE-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4576GQBE-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-P reliable?
The price and inventory of MPQ4576GQBE-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-P is usually 5 days.
3.What payment methods are accepted for MPQ4576GQBE-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4576GQBE-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4576GQBE-P?
MPQ4576GQBE-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4576GQBE-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-P?
For technical support, including MPQ4576GQBE-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4576GQBE-P requirements.
6.How does Aetrix verify that MPQ4576GQBE-P is sourced from the original manufacturer or authorized distributors?
All MPQ4576GQBE-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-P meets industry standards.
7.What is the process for return or replacement of MPQ4576GQBE-P?
All MPQ4576GQBE-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4576GQBE-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-P part is unused and in its original packaging.
Return procedure for MPQ4576GQBE-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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