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Monolithic Power Systems Inc. MP2491CGQB-Z

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Monolithic Power Systems Inc.
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    MP2491CGQB-Z this integrated circuit is available in factory sealed anti static packs. at Please read product page below detail information. including MP2491CGQB-Z price, data-sheet, in-stock availability, technical difficulties. Also. Quickly Enter the access of compare listing to find out replaceable electronic parts. If you want to retrieve comprehensive data for MP2491CGQB-Z to optimize the supply chain (including cross references, life-cycle, parametric, counterfeit risk, obsolescence managements forecasts), please contact to our Tech-supports team.

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    MP2491CGQB-Z Typical application Circuitry


    The MP2491CGQB-Z is a monolithic step-down switch mode converter that has an integrated internal power MOSFET. With exceptional load and line control, it produces a steady output current of 1A throughout a broad input supply range.

    Utilization Situations: The MP2491CGQB-Z is designed for various applications where high efficiency, compact size, and precise voltage regulation are essential, including distributed power systems, networking systems, and FPGA, DSP, and ASIC power supplies.

    Key Parameters: The device operates at a 2MHz switching frequency and has an input voltage range of 4.5V to 36V. It is extremely efficient and has strong protection measures like cycle-by-cycle current limiting and thermal shutdown.

    Application - FPGA Power Supply

    1. Power Source Connection:

    - Pin 3 (IN): Connect the input power source to pin 3. Ensure the voltage is within the 4.5V to 36V range to properly power the MP2491CGQB-Z.

    - Bypass Capacitor: A bypass capacitor should be close to pin 3 to filter the input noise for stable operation.

    2. Grounding:

    - Pin 4 (GND): Connect this pin to the system ground. For this pin, a sturdy ground plane aids in heat dissipation and reduces noise.

    - Ground Plane: Ensure a solid and wide ground plane to minimize ground noise and enhance thermal performance.

    3. Output Power:

    - Pin 6 (SW): The switch node, connected to the internal power MOSFET, should connect to the load (e.g., FPGA) through an inductor and capacitor to form the LC filter.

    - LC Filter: Choose the inductor and capacitor values carefully to optimize the transient response and minimize the output voltage ripple.

    4. Feedback Loop:

    - Pin 1 (FB): Connect a resistor divider network from the output to this pin to set the output voltage level. Ensure stability in the feedback loop for accurate voltage regulation.

    - Loop Compensation: To obtain the required transient response and stability, adjust the loop compensation components.

    Design Considerations

    1. Inductor Selection:

    - Inductor Value: The choice of inductor affects the converter's performance. Balance between size, cost, and efficiency while considering the operating frequency and current.

    - Saturation Current: The inductor's saturation current should be higher than the peak current to avoid performance degradation.

    2. Output Capacitor:

    - Capacitor Value and ESR: Select the output capacitor considering the Equivalent Series Resistance (ESR) and the desired output voltage ripple.

    - Placement: Place the output capacitor close to the load to reduce the effects of parasitic inductance and resistance.

    3. Thermal Management:

    - Heat Dissipation: Design the PCB to enhance heat dissipation, considering factors like ambient temperature and airflow.

    - Thermal Pads and Vias: Utilize thermal pads and vias to enhance heat dissipation and ensure the MP2491CGQB-Z operates within the safe temperature range.

    4. Protection Features:

    - Utilize Built-in Protections: Leverage the integrated cycle-by-cycle current limiting and thermal shutdown to enhance system reliability.

    - Additional Protections: Consider implementing additional protections like input over-voltage and under-voltage lockout as needed.

    Leveraging the MP2491CGQB-Z for power supply applications requires a detailed focus on component selection, layout design, thermal management, and protective features. Every design aspect should aim for optimal performance, efficiency, and reliability to harness the full potential of this versatile converter chip.

    MP2491CGQB-Z informationMP2491CGQB-Z information

    MP2491CGQB-Z FAQ

    1. How to order MP2491CGQB-Z on

    Currently, only provide peer-to-peer order processing. While you submit the RFQ, our professional agent will contact you with the competitive prices in the global market, and our agent will prompt you to finish the order if you accept our offers.

    2. How does guarantee that MP2491CGQB-Z is from the original manufacturer or authorized agents?

    We have a professional and experienced quality control team to strictly verify and test the MP2491CGQB-Z. All suppliers must pass our qualification reviews before they can publish their products including MP2491CGQB-Z on; we pay more attention to the channels and quality of MP2491CGQB-Z products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.

    3. Are the MP2491CGQB-Z price and inventory displayed accurate?

    The price and inventory of MP2491CGQB-Z fluctuates frequently and cannot be updated in time, it will be updated periodically within 24 hours. And, our quotation usually expires after 5 days.

    4. What forms of payment are accepted?

    Wire Transfer, PayPal, Alipay, Wechat, Credit Card, Western Union, MoneyGram, and Escrow are all acceptable.

    Warm Tips: Some orders in certain payment forms may require handling fee.

    5. How is the shipping arranged?

    Customers can choose industry-leading freight companies, including DHL, UPS, FedEx, TNT, and Registered Mail. Shipping insurance is also available.

    Once your order has been processed for shipment, our salesperson will send you an email advising you of the shipping status and tracking number.

    Warm Tips: It may take up to 24 hours for the carriers to display tracking information. Usually, express delivery takes 3-5 days, and registered mail takes 25-60 days.

    6. What is the process for return or replacement of MP2491CGQB-Z?

    All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the MP2491CGQB-Z we delivered, we will accept the replacement or return of the MP2491CGQB-Z only when all of the below conditions are fulfilled:

    (1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

    (2)We are informed of the defect described above within 90 days after the delivery of MP2491CGQB-Z.

    (3)The PartNo is unused and only in the original unpacked packaging.

    Two processes to return the products:

    (1)Inform us within 90 days

    (2)Obtain Requesting Return Authorizations

    7.How to contact us to get technical supports, such as MP2491CGQB-Z pin diagram, MP2491CGQB-Z datasheet?

    If you need any after-sales service, please do not hesitate to contact us.

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