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ON NCP1234AD100R2G


Ovaga Certification

Brands: ON Semiconductor, LLC

Mfr.Part #: NCP1234AD100R2G

Datasheet: NCP1234AD100R2G Datasheet (PDF)

Package/Case: SOP7

Product Type: Power Management ICs

RoHS Status:

Stock Condition: 3678 pcs, New Original

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NCP1234AD100R2G General Description

The NCP1234 is a new fixed−frequency current−mode controller featuring Dynamic Self−Supply (DSS). This device is pin−to−pin compatible with the previous NCP12xx families.
The DSS function greatly simplifies the design of the auxiliary supply and the VCC capacitor by activating the internal startup current source to supply the controller during transients.



  • Fixed−Frequency Current−Mode Operation with Built−In Ramp Compensation
  • 65 kHz or 100 kHz Oscillator Frequency version
  • Frequency Foldback then Skip Mode for Maximized Performance in Light Load and Standby Conditions
  • Timer−Based Overload Protection with Latched (option A) or Auto−Recovery (option B) Operation
  • High−voltage Current Source with Dynamic Self−Supply, Simplifying the Design of the VCC Capacitor
  • Frequency Modulation for Softened EMI Signature, including during Frequency Foldback mode
  • Adjustable Overpower Compensation
  • Latch−off Input for Severe Fault Conditions, Allowing Direct Connection of an NTC for Overtemperature Protection (OTP)
  • VCC Operation up to 28 V, with Overvoltage Detection
  • 4.0 ms Soft−Start
  • Internal Thermal Shutdown
  • Pin−to−Pin Compatible with the Existing NCP12xx Series
  • These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant




Parameter Value Parameter Value
Manufacturer: ON Semiconductor Product Category: Switching Controllers
RoHS: Y Packaging: Reel
Series: NCP1234 Type: Current Mode PWM Controllers
Brand: ON Semiconductor Product Type: Switching Controllers
Factory Pack Quantity: 2500 Subcategory: PMIC - Power Management ICs
Tags NCP1234A, NCP1234, NCP123, NCP12, NCP1, NCP


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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.


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    Step3 :Anti-static bag

  • Individual packaging

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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

Datasheet PDF

Preliminary Specification NCP1234AD100R2G PDF Download

Key points

  • The NCP1234AD100R2G chip is a highly integrated power factor correction (PFC) controller designed for offline switch-mode power supplies. It helps to improve power efficiency and meets power factor correction standards required by energy-saving regulations. The chip offers protection features such as overvoltage, overcurrent, and over-temperature protection to ensure safe operation. It is commonly used in applications like LED lighting, adapters, and industrial power supplies.
  • Equivalent

    Some equivalent products of the NCP1234AD100R2G chip include NCP1234AD100R2G No. of Internal Peers: 1; MSL: 1; Maximum Operating Temperature: 150 °C, NCP1234AD100R2G Manufacturer: ON Semiconductor, NCP1234AD100R2G datasheet, NCP1234AD100R2G PDF, NCP1234AD100R2G price, and NCP1234AD100R2G Specifications.
  • Features

    The NCP1234AD100R2G is an Integrated Power Device (IPD) featuring a high-voltage power switch and control circuits. It offers Overtemperature protection, optimized line feed-forward compensation, and frequency foldback. It also incorporates a built-in soft-start function, a comprehensive set of protection features, and a tiny package with fewer external components required, making it suitable for low-power offline applications.
  • Pinout

    The NCP1234AD100R2G is a PWM controller IC. It has 8 pins (DIP-8 package) and is commonly used in power supply applications. The pin functions include feedback (FB), power (VCC), oscillator (RT/CT), compensation (COMP), ground (GND), and output (OUT) pins.
  • Manufacturer

    The manufacturer of the NCP1234AD100R2G is ON Semiconductor. ON Semiconductor is a multinational corporation that specializes in manufacturing and distributing semiconductor components and devices for various industries, including automotive, industrial, and consumer electronics. They provide a wide range of products, such as power management ICs, sensors, and discrete components, to meet the growing demands of the electronics market.
  • Application Field

    The NCP1234AD100R2G is a versatile integrated circuit that can be used in various application areas, including off-line switched-mode power supplies (SMPS) in consumer electronics, household appliances, and industrial equipment. It offers high efficiency and reliable operation, making it suitable for a wide range of power conversion applications.
  • Package

    The NCP1234AD100R2G chip has a package type of DFN-8, its form is SMD, and its size is 3mm x 3mm.

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