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Monolithic Power Systems Inc. MPQ2454GQ-AEC1-Z
- Part No.:
- MPQ2454GQ-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
MPQ2454GQ-AEC1-Z.pdf
- Description:
- IC REG BUCK ADJ 600MA 10QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,882
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Product details
Overview
MPQ2454GQ-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified 36V, 0.6A synchronous step-down DC/DC converter with integrated 200mΩ high-side MOSFET, programmable 350kHz–2.3MHz switching frequency, and 60μA quiescent current - designed for automotive power rails including infotainment, ADAS camera modules, and body control units.
For engineers reviewing the MPQ2454GQ-AEC1-Z datasheet, MPQ2454GQ-AEC1-Z pinout, MPQ2454GQ-AEC1-Z application, or MPQ2454GQ-AEC1-Z equivalent, key selection criteria include cold-crank low-dropout operation (100% duty cycle), open-drain POK with programmable delay, frequency synchronization capability, and QFN-10 (3mm×3mm) thermal performance under -40°C to +125°C junction temperature.
Technical Context
This non-synchronous buck regulator uses current-mode control with cycle-by-cycle peak current limiting and frequency foldback during start-up or short-circuit to prevent inductor current runaway. Its internal 0.8V reference and error amplifier enable precise output regulation across line and load variations.
The device implements active bootstrap refresh and low-dropout mode to sustain regulation down to VIN = 3.3V at full load, critical for automotive cold-crank (e.g., 4.5V battery sag). Thermal shutdown at 170°C with 25°C hysteresis ensures fault-tolerant operation in enclosed ECU environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.3V to 36V - supports full automotive battery range including cold-crank (4.5V) and load-dump (40V transient tolerance) |
| Output Current | 0.6A continuous - sufficient for powering microcontrollers, sensors, and CAN transceivers in distributed ECUs |
| Switching Frequency | 350kHz to 2.3MHz - programmable via external resistor; enables compact magnetics and EMI optimization in space-constrained modules |
| Quiescent Current | 60μA - enables always-on functionality in vehicle security systems without excessive battery drain |
| Feedback Voltage | 0.8V ±2% - allows accurate output setting with standard resistor dividers; reduces sensitivity to trace resistance errors |
| Power Good Threshold | ±10% window with 4.5% hysteresis - provides reliable rail monitoring for system reset sequencing in safety-critical applications |
| Shutdown Current | 3.5μA - ensures ultra-low standby power for wake-on-LIN/CAN architectures |
Pinout & Package
MPQ2454GQ-AEC1-Z is housed in a thermally enhanced QFN-10 (3mm × 3mm) package with exposed pad soldered to PCB ground plane for optimal thermal dissipation (θJA = 50°C/W, θJC = 12°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switch Node | High-current output of internal MOSFET; requires low-VF Schottky diode placement adjacent to minimize ringing |
| 2 VIN | Main Input Supply | 3.3–36V input; must be decoupled with low-ESR ceramic capacitor placed <1mm from pin |
| 3 GND | Power Ground | Reference for all internal circuitry; connects to exposed pad for thermal and electrical integrity |
| 4 SS | Soft-Start Control | Sources 1.8μA to external capacitor; sets controlled output ramp time to prevent inrush into downstream capacitance |
| 5 FB | Feedback Input | Monitors output via resistor divider; 0.8V threshold enables stable regulation independent of VOUT setpoint |
| 6 POKDL | POK Delay Programming | Accepts capacitor to GND; sets POK assertion delay (e.g., 100nF ≈ 120ms) for post-regulation timing compliance |
| 7 POK | Open-Drain Power Good | Asserts high when VOUT is within ±10%; requires external pull-up (≤5V) for MCU reset or status signaling |
| 8 FREQ | Frequency Set | Resistor-to-GND sets oscillator frequency; 17.4kΩ yields 2.3MHz for high-density layout |
| 9 EN/SYNC | Enable & Clock Sync | Pull >1.8V to enable; apply 350kHz–2.3MHz clock for EMI reduction via synchronized switching |
| 10 BST | Bootstrap Supply | Charges external 0.1μF capacitor between BST–SW; enables high-side gate drive during 100% duty cycle operation |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Qualification | AEC-Q100 Grade 1 (−40°C to +125°C TJ) - validated for under-hood and cabin-mounted electronic control units |
| Low Dropout Mode | Supports 100% duty cycle with active BST refresh - maintains regulation during cold-crank down to VIN = 3.3V at 0.6A |
| Frequency Synchronization | EN/SYNC pin accepts external clock (350kHz–2.3MHz) - eliminates beat frequencies in multi-rail systems |
| Internal Compensation | Single-pole compensation network embedded - eliminates need for external compensation components, reducing BOM count |
| Ceramic Capacitor Stability | Stable with X5R/X7R MLCCs only - simplifies output filtering design and improves long-term reliability vs. electrolytics |
Applications
| Infotainment Power Rail | ADAS Camera Module |
|---|---|
Use Scenario: Supplies 3.3V/5V to SoC, display driver, and audio codec in head-unit systems with wide battery voltage variation. IC Role / Device Role / Timing Role: Primary buck regulator delivering regulated rail; manages cold-crank dropout and load-dump transients. Use Value: 60μA quiescent current extends battery life during vehicle sleep; POK enables safe boot sequencing before SoC initialization. | Use Scenario: Powers image sensor, ISP, and MIPI interface in rear-view or surround-view cameras mounted externally. IC Role / Device Role / Timing Role: High-reliability point-of-load converter operating continuously in ambient temperatures up to +105°C. Use Value: AEC-Q100 qualification ensures functional safety compliance; 2.3MHz switching enables small 1.0μH inductor and minimal board area. |
| Body Control Module (BCM) | Telematics Control Unit (TCU) |
Use Scenario: Generates 5V for LIN transceivers, door lock actuators, and interior lighting drivers in centralized BCMs. IC Role / Device Role / Timing Role: Secondary power stage after main 12V–5V conversion; handles pulsed loads from solenoid activation. Use Value: Cycle-by-cycle current limit prevents latch-up during shorted actuator wiring; thermal shutdown protects against enclosure overheating. | Use Scenario: Provides 3.3V to cellular modem, GNSS receiver, and secure element in always-connected TCU modules. IC Role / Device Role / Timing Role: Always-on supply with programmable POK delay ensuring modem firmware initializes only after stable VDD. Use Value: 3.5μA shutdown current meets ISO 16750-2 parasitic drain limits; frequency sync avoids interference with LTE band reception. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480-Q1 | Higher 3.5A output, fixed 2.1MHz frequency, no POK delay programming | Better suited for higher-power domains like HVAC control; lacks soft-start current adjustability | Select when >1A load required and POK timing flexibility is not needed |
| TPS62903-Q1 | Lower 3A rating, 1.8V–6.5V input, integrated LDO post-regulator, no cold-crank support | Optimized for low-noise digital rails; unsuitable for 12V battery direct connection | Select for noise-sensitive DSP/FPGA supplies where input is pre-regulated to 5V |
Compared with LM61480-Q1 and TPS62903-Q1, MPQ2454GQ-AEC1-Z uniquely balances ultra-low IQ (60μA), cold-crank robustness (3.3V min VIN), and POK programmability - making it optimal for cost-sensitive, space-constrained automotive subsystems requiring precise power sequencing and extended battery life.
Availability
MPQ2454GQ-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and body control units requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for MPQ2454GQ-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 analog and power ICs, with over two decades of leadership in DC/DC conversion, motor drivers, and LED lighting controllers.
The MPQ2454 product line targets automotive-grade power management, specifically engineered to meet AEC-Q100 stress testing and deliver reliable, low-quiescent-current step-down conversion in harsh vehicular environments.
FAQ
What is the minimum input voltage required for MPQ2454GQ-AEC1-Z to regulate 3.3V at 0.6A?
At 0.6A load and 1MHz switching frequency, MPQ2454GQ-AEC1-Z regulates 3.3V output down to VIN = 3.3V - enabled by its low-dropout mode and active bootstrap refresh. This meets automotive cold-crank requirements where battery voltage sags to ~4.5V, with margin for PCB trace drop.
Does MPQ2454GQ-AEC1-Z require an external bootstrap diode?
An external bootstrap diode (e.g., 1N4148) is recommended for applications operating above 65% duty cycle or at ≥2MHz switching frequency to reduce quiescent current and improve light-load efficiency. It is not mandatory but enhances performance in high-duty-cycle automotive scenarios.
How is the power good (POK) delay time programmed on MPQ2454GQ-AEC1-Z?
Connect a capacitor from POKDL pin to GND. Using equation tDL = (CPOKDL × 1.2V) / 1.8μA, a 100nF capacitor yields ~67ms delay. This allows timing alignment with downstream LDOs or processors requiring delayed power-OK assertion after rail stabilization.
Can MPQ2454GQ-AEC1-Z synchronize to an external clock while in shutdown?
No. Synchronization is only active when EN/SYNC voltage exceeds 1.8V and the device is enabled. During shutdown (VEN < 1V), the internal oscillator and sync circuitry are disabled; applying a clock signal has no effect until enable conditions are met.
What is the maximum allowable output capacitor ESR for stable operation?
MPQ2454GQ-AEC1-Z is internally compensated and stable with ceramic capacitors (ESR < 10mΩ). When using tantalum or polymer electrolytics, keep ESR ≤ 30mΩ to avoid phase margin degradation; stability is verified per MPS Application Note AN115 with 2×10μF X5R ceramics.
Is the exposed thermal pad electrically isolated in the QFN-10 package?
No. The exposed pad is internally connected to GND and must be soldered to a dedicated PCB ground plane. Thermal vias (≥4×0.3mm) to inner ground layers are required to achieve θJA = 50°C/W and prevent thermal shutdown under full load at +125°C ambient.
MPQ2454GQ-AEC1-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- 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):
- 3.3V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 2.9V
- Voltage - Output (Max):
- 36V
- Current - Output:
- 600mA
- Frequency - Switching:
- 2.3MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-QFN (3x3)
MPQ2454GQ-AEC1-Z FAQ
1.How can I place an order for MPQ2454GQ-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ2454GQ-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 MPQ2454GQ-AEC1-Z reliable?
The price and inventory of MPQ2454GQ-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 MPQ2454GQ-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ2454GQ-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ2454GQ-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ2454GQ-AEC1-Z?
MPQ2454GQ-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ2454GQ-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 MPQ2454GQ-AEC1-Z?
For technical support, including MPQ2454GQ-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ2454GQ-AEC1-Z requirements.
6.How does Aetrix verify that MPQ2454GQ-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ2454GQ-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 MPQ2454GQ-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ2454GQ-AEC1-Z?
All MPQ2454GQ-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ2454GQ-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 MPQ2454GQ-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ2454GQ-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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