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Monolithic Power Systems Inc. MPQ2454GH
- Part No.:
- MPQ2454GH
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
MPQ2454GH.pdf
- Description:
- IC REG BUCK ADJ 600MA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,224
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Product details
Overview
MPQ2454GH from Monolithic Power Systems is a frequency-programmable (350 kHz to 2.3 MHz), AEC-Q100 Grade 1 qualified, non-synchronous step-down DC/DC converter with integrated 200 mΩ high-side MOSFET, delivering up to 0.6 A output current across a 3.3 V to 36 V input range. It features current-mode control, programmable power good delay, and low-dropout operation for automotive cold-crank support. Used in automotive infotainment power rails and ADAS camera modules.
For engineers reviewing the MPQ2454GH datasheet, MPQ2454GH pinout, MPQ2454GH application, or MPQ2454GH equivalent, key selection criteria include its 3.5 μA shutdown current, internal compensation, ceramic-capacitor compatibility, and MSOP-10 EP package thermal performance under -40°C to +125°C junction temperature.
Technical Context
The MPQ2454GH implements peak-current-mode PWM control with slope compensation and cycle-by-cycle overcurrent protection. Its oscillator supports external resistor programming (RFREQ) or synchronization to an external clock (350 kHz–2.3 MHz), enabling EMI optimization in dense automotive PCB layouts.
It integrates a 3.5 V internal regulator for biasing, a 5 V bootstrap driver with active refresh logic for 100% duty-cycle capability, and a precision 0.8 V feedback reference with ±2% tolerance over temperature. Thermal shutdown (170°C trip, 25°C hysteresis) and VIN UVLO (2.9 V rising, 2.65 V falling) ensure robust fault handling in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.3 V to 36 V - supports full automotive battery range including cold-crank (down to ~3.3 V at light load) |
| Output Current | 0.6 A continuous - sufficient for powering microcontrollers, sensors, and interface ICs in ADAS subsystems |
| Switching Frequency | 350 kHz to 2.3 MHz - programmable via FREQ pin resistor; enables compact magnetics and noise-sensitive band avoidance |
| Quiescent Current | 60 μA - enables always-on functionality in vehicle body electronics without excessive battery drain |
| Feedback Reference | 0.8 V ±2% - precise regulation accuracy with external resistor divider; simplifies output voltage setting (e.g., 3.3 V, 5 V) |
| Shutdown Current | 3.5 μA - ultra-low leakage during ignition-off states; critical for >10-year battery standby life |
| Power Good Threshold | ±10% of nominal VOUT - open-drain POK signal with programmable delay (via POKDL capacitor) for sequencing compliance |
| Thermal Shutdown | 170°C with 25°C hysteresis - protects against sustained overload or poor heatsinking in enclosed ECUs |
Pinout & Package
MPQ2454GH is housed in an MSOP-10 EP (exposed pad) package. The exposed thermal pad must be soldered to a dedicated GND plane for optimal thermal performance (θJA = 55°C/W, θJC = 12°C/W on 4-layer PCB).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switch Node | High-current output of internal MOSFET; requires low-VF Schottky diode and tight layout to minimize ringing |
| 2 VIN | Input Supply | Main power input (3.3–36 V); decoupling capacitor must be placed adjacent to reduce switching transients |
| 3 GND | Ground Reference | Signal and power ground; connects to exposed pad for thermal conduction and low-impedance return path |
| 4 SS | Soft-Start Control | Capacitor-based ramp generator (1.8 µA current source); prevents inrush current and output overshoot at startup |
| 5 FB | Feedback Input | Monitors output via resistor divider; compares to 0.8 V reference to regulate VOUT with ±2% accuracy |
| 6 POKDL | Power Good Delay | Capacitor-programmable delay for POK assertion; ensures stable regulation before system enable |
| 7 POK | Open-Drain Power Good | Indicates VOUT within ±10%; pulled low during fault or shutdown; requires external pull-up (≤5 V) |
| 8 FREQ | Frequency Set | Resistor-to-GND sets switching frequency (e.g., 49.9 kΩ → 1 MHz); enables EMI tuning and layout optimization |
| 9 EN/SYNC | Enable & Sync Input | Dual-function pin: logic-level enable (1 V low / 1.8 V high) or external clock sync (350 kHz–2.3 MHz) |
| 10 BST | Bootstrap Supply | Charges external BST capacitor from VIN via internal PMOS; enables high-side gate drive for 100% duty cycle |
Key Features
| Feature | Design Value |
|---|---|
| Internal 200 mΩ High-Side MOSFET | Eliminates external switch and reduces BOM count; enables compact 3.3 V/5 V buck designs with <10 mm² footprint |
| Programmable Switching Frequency | 350 kHz–2.3 MHz via single resistor - avoids AM/FM bands and allows trade-off between efficiency and size |
| Low Dropout Operation | Supports 100% duty cycle down to VIN ≈ VOUT + 0.3 V - sustains regulation during automotive cold-crank (e.g., 3.5 V in, 3.3 V out) |
| Stable with Ceramic Output Capacitors | No ESR requirement - enables use of small, reliable, low-ESR MLCCs instead of bulkier tantalum/electrolytic caps |
| Internal Compensation | Reduces external component count by eliminating compensation network; accelerates design-in and validation |
| AEC-Q100 Grade 1 Qualification | Validated for -40°C to +125°C operation - meets automotive reliability requirements for engine bay and cabin applications |
Applications
| Automotive Infotainment Power | ADAS Camera Module Supply |
|---|---|
|
Use Scenario: Powering SoC core voltage (1.1 V) and I/O rail (3.3 V) in head-unit systems with wide battery input variation. IC Role / Device Role / Timing Role: Primary step-down regulator providing stable, low-noise 3.3 V supply with fast transient response to handle burst-mode DSP loads. Use Value: 60 μA quiescent current extends battery life during vehicle sleep mode; AEC-Q100 qualification ensures field reliability over 15-year vehicle lifecycle. |
Use Scenario: Generating 5 V for image sensor and ISP in rear-view or surround-view cameras mounted externally. IC Role / Device Role / Timing Role: Non-synchronous buck converter delivering regulated 5 V from 9–16 V battery, with cold-crank support down to 3.5 V. Use Value: Low dropout mode maintains camera operation during engine start; POK signal enables safe sensor initialization after power stabilization. |
| Industrial Telematics Unit | Smart Rearview Mirror Power |
|
Use Scenario: Converting 24 V truck battery to 3.3 V for GPS/GNSS module and cellular modem in fleet management hardware. IC Role / Device Role / Timing Role: High-voltage input buck regulator with frequency synchronization to avoid interference with RF receivers. Use Value: 2.3 MHz max switching frequency allows use of tiny 1.0 × 1.0 mm inductors; MSOP-10 EP package fits constrained board space. |
Use Scenario: Supplying 3.3 V to display controller and ambient light sensor in auto-dimming rearview mirrors. IC Role / Device Role / Timing Role: Always-on power stage with ultra-low shutdown current (3.5 μA) to meet OEM parasitic draw limits (<50 μA). Use Value: Internal soft-start prevents display flicker at ignition-on; thermal shutdown protects against enclosure overheating in sealed mirror housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ2451GH | Lower 0.5 A output current; fixed 500 kHz frequency; no POK or POKDL pins | Lacks power sequencing capability and cold-crank margin; suitable only for non-critical 3.3 V rails | Select when cost sensitivity outweighs need for programmability and automotive robustness |
| TI TPS54340QDGQRQ1 | Higher 3.5 A rating; wider 3.5–42 V input; requires external compensation; no internal soft-start | Better for higher-power loads but larger solution size and more complex loop tuning | Choose when >0.6 A output or >36 V surge tolerance is required; not drop-in compatible |
Compared with MPQ2454GH, MPQ2451GH sacrifices programmability and monitoring for lower cost, while TPS54340QDGQRQ1 trades integration and ease-of-use for higher current and input voltage headroom-neither matches MPQ2454GH's balance of AEC-Q100 compliance, ultra-low IQ, and compact MSOP-10 EP footprint.
Availability
MPQ2454GH is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and industrial telematics requiring stable component supply with AEC-Q100 traceability and long-term production continuity.
Supply support for MPQ2454GH 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 design centers in the US, China, and Taiwan, and global manufacturing partnerships.
The MPQ2454 belongs to MPS's automotive-grade DC/DC converter product line, engineered specifically for harsh-environment power conversion in vehicles-emphasizing low IQ, cold-crank resilience, and AEC-Q100 reliability.
FAQ
What is the minimum input voltage required for MPQ2454GH to regulate 3.3 V at 600 mA?
At 600 mA load and 1 MHz switching frequency, MPQ2454GH maintains regulation within 5% of 3.3 V down to approximately 3.45 V input, as verified in Figure 4(a) of the datasheet. This margin supports automotive cold-crank conditions where battery voltage dips transiently below 6 V.
Can MPQ2454GH operate without an external bootstrap diode?
Yes-MPQ2454GH includes an internal bootstrap regulator that charges the BST capacitor from VIN. An external diode (e.g., 1N4148) is optional and recommended only for high-duty-cycle (>65%) or high-frequency (>2 MHz) applications to reduce quiescent current and improve light-load efficiency.
How is the power good (POK) delay time calculated?
POK delay is set by a capacitor (CPOKDL) from POKDL to GND using tDL = (CPOKDL × 1.2 V) / IPOKDL, where IPOKDL = 1.8 µA typical. For example, a 100 nF capacitor yields ~67 ms delay, ensuring POK asserts only after output settles post-soft-start.
Does MPQ2454GH require external compensation components?
No-MPQ2454GH features fully internal compensation. Its error amplifier and current-sense loop are factory-tuned for stability with standard ceramic output capacitors, eliminating the need for external RC networks and reducing design risk.
What is the maximum allowable junction temperature during continuous operation?
The absolute maximum junction temperature is 150°C, but thermal shutdown activates at 170°C (with 25°C hysteresis). For reliable continuous operation, keep TJ ≤ 125°C using the MSOP-10 EP's θJA = 55°C/W on a 4-layer PCB with adequate copper area under the exposed pad.
Is MPQ2454GH pin-compatible with MPQ2454GQ?
No-MPQ2454GH (MSOP-10 EP) and MPQ2454GQ (QFN-10, 3 mm × 3 mm) share identical electrical functionality and pin functions, but differ in physical layout, thermal pad configuration, and land pattern. They are not mechanically interchangeable without PCB redesign.
How does frequency foldback improve safety during short-circuit events?
During output short or heavy overload, FB voltage drops, causing the oscillator frequency to scale down to ~20% of nominal (e.g., 200 kHz from 1 MHz). This reduces switching and gate-drive losses, preventing inductor saturation and thermal runaway while maintaining cycle-by-cycle current limiting.
MPQ2454GH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tube
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP-EP
MPQ2454GH FAQ
1.How can I place an order for MPQ2454GH through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ2454GH 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 MPQ2454GH reliable?
The price and inventory of MPQ2454GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ2454GH is usually 5 days.
3.What payment methods are accepted for MPQ2454GH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ2454GH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ2454GH?
MPQ2454GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ2454GH 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 MPQ2454GH?
For technical support, including MPQ2454GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ2454GH requirements.
6.How does Aetrix verify that MPQ2454GH is sourced from the original manufacturer or authorized distributors?
All MPQ2454GH 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 MPQ2454GH meets industry standards.
7.What is the process for return or replacement of MPQ2454GH?
All MPQ2454GH units undergo pre-shipment inspection (PSI). If there is an issue with MPQ2454GH, 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 MPQ2454GH part is unused and in its original packaging.
Return procedure for MPQ2454GH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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