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ON NCP1271D100R2G

NCP1271D100R2G is a SOIC-7 packaged NCP Series 3.5 mA 100 kHz SMT Soft-Skip Mode Standby PWM Controller

ISO14001 ISO9001 DUNS

Brands: onsemi

Mfr.Part #: NCP1271D100R2G

Datasheet: NCP1271D100R2G Datasheet (PDF)

Package/Case: SOP7

Product Type: AC DC Converters, Offline Switches

RoHS Status:

Stock Condition: 783 pcs, New Original

Warranty: 1 Year Ovaga Warranty - Find Out More

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NCP1271D100R2G General Description

The NCP1271 device introduces a cutting-edge advancement in power management technology, offering a seamless upgrade for users of the popular NCP12XX series. With a focus on minimizing standby power consumption, this controller features an adjustable Soft Skip mode and an integrated high voltage startup FET. The innovative Soft Skip technology not only enhances efficiency but also significantly reduces the risk of unwanted acoustic noise, providing a more pleasant user experience. Additionally, the controller's design allows for the use of cost-effective transformers and capacitors in the clamping network, further optimizing the overall system cost



  • NCP1271D100R2G is a current mode controller with 100 kHz switching frequency, integrated high-voltage startup and PWM controller, built-in protections such as overcurrent and overvoltage, adjustable overvoltage protection, and integrated soft-start function
  • It is designed for offline power supplies in LED lighting and industrial applications
  • NCP1271D100R2G


    • Power Converters
    • Electronic Chargers


    Parameter Value Parameter Value
    Status Active, Not Rec Compliance PbAHP
    Package Type SOIC-7 Case Outline 751U
    MSL Type 1 MSL Temp (°C) 260
    Container Type REEL Container Qty. 2500
    ON Target Y Topology Flyback
    Control Mode Current Mode fsw Typ (kHz) 100
    Stand-by Mode Yes UVLO (V) Yes
    Short Circuit Protection Yes Latch Yes
    Soft Start Yes VCC Max (V) 20
    Drive Cap. (mA) 500 / 800


    Shipping Type Ship Fee Lead Time
    DHL DHL $20.00-$40.00 (0.50 KG) 2-5 days
    Fedex Fedex $20.00-$40.00 (0.50 KG) 2-5 days
    UPS UPS $20.00-$40.00 (0.50 KG) 2-5 days
    TNT TNT $20.00-$40.00 (0.50 KG) 2-5 days
    EMS EMS $20.00-$40.00 (0.50 KG) 2-5 days
    REGISTERED AIR MAIL REGISTERED AIR MAIL $20.00-$40.00 (0.50 KG) 2-5 days

    Processing Time:Shipping fee depend on different zone and country.


    Terms of payment Hand Fee
    Wire Transfer Wire Transfer charge US$30.00 banking fee.
    Paypal Paypal charge 4.5% service fee.
    Credit Card Credit Card charge 3.5% service fee.
    Western Union Western Union charge US.00 banking fee.
    Money Gram Money Gram charge US$0.00 banking fee.


    1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.

    2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


    • Product

      Step1 :Product

    • Vacuum packaging

      Step2 :Vacuum packaging

    • Anti-static bag

      Step3 :Anti-static bag

    • Individual packaging

      Step4 :Individual packaging

    • Packaging boxes

      Step5 :Packaging boxes

    • bar-code shipping tag

      Step6 :bar-code shipping tag

    All the products will packing in anti-staticbag. Ship with ESD antistatic protection.

    Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.

    We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

    After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

    • ESD
    • ESD

    Part points

    • The NCP1271D100R2G chip is a high-voltage switch-mode power supply controller designed for offline flyback converters. It integrates various protection features like overvoltage, overload, and overtemperature protection. This chip is suitable for applications requiring a constant voltage or constant current output.
    • Equivalent

      Equivalent products of the NCP1271D100R2G chip are the NCP1271D100, NCP1271D100R2, and NCP1271D100R2G.
    • Features

      The features of NCP1271D100R2G include a fixed frequency current mode controller, protection features such as thermal shutdown, overvoltage protection, and overload protection. It also offers a low standby power consumption, high voltage start-up capability, and integrated features for enhanced performance and reliability in power supply applications.
    • Pinout

      The NCP1271D100R2G is a controller IC for off-line power supplies. It has 8 pins and performs various functions like PWM control, frequency jitter, overvoltage protection, feedback compensation, and under-voltage lockout.
    • Manufacturer

      The NCP1271D100R2G is manufactured by ON Semiconductor. ON Semiconductor is a semiconductor manufacturing company that specializes in power management and sensor solutions.
    • Application Field

      The NCP1271D100R2G is a primary-side switching controller for offline flyback converters. It is commonly used in applications such as LED lighting, battery chargers, and various low-power consumer electronics. It features a built-in 700V MOSFET, high voltage startup circuitry, and protection features such as over-voltage and over-current protection.
    • Package

      The NCP1271D100R2G chip is available in a DPAK package type, with a form factor of Surface Mount and a size of 6.2mm x 5.2mm.

    We provide high quality products, thoughtful service and after sale guarantee

    • Product

      We have rich products, can meet your various needs.

    • quantity

      Minimum order quantity starts from 1pcs.

    • shipping

      Lowest international shipping fee starts from $0.00

    • guarantee

      365 days quality guarantee for all products

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