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NCP1342BMDCDD1R2G The NCP1342BMDCDD1R2G is a highly integrated quasi-resonant flyback controller from On Semiconductor. It is designed for high-performance off-line power converters.
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NCP1342BMDCDD1R2G

Available from 1 distributors
Mfr Name: On Semiconductor
On Semiconductor
The NCP1342BMDCDD1R2G is a highly integrated quasi-resonant flyback controller from On Semiconductor. It is designed for high-performance off-line power converters.
✓ Total Stock: 31,668 pcs
$ Price Range: $0.75

NCP1342BMDCDD1R2G Available from 1 distributor

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✓ Non-Authorised
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31,668 pcs
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NCP1342BMDCDD1R2G Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Control Features
Fault Protection
Frequency
Internal Switch(s)
Mounting Type
Operating Temperature
Output Isolation
Power (Watts)
Supplier Device Package
Topology
Voltage
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NCP1342BMDCDD1R2G Description

Short technical summary and product information.

The NCP1342BMDCDD1R2G is a quasi-resonant flyback controller from On Semiconductor, designed for high-performance off-line power converters. It features a wide operating voltage range from 9V to 28V and operates between -40°C and 125°C.

 

This controller integrates several features to enhance performance and efficiency. It includes a proprietary valley-lockout circuitry for stable valley switching and transitions to frequency foldback mode to reduce switching losses. For light load conditions, it enters quiet-skip mode and incorporates Rapid Frequency Foldback with Minimum Peak Current Modulation to quickly reduce switching frequency. The device also includes integrated high-voltage startup, X2 capacitor discharge capability, and various protective features like brownout detection, non-dissipative Over Power Protection (OPP), latched overvoltage protection, and NTC-ready overtemperature protection.

 

The NCP1342BMDCDD1R2G is available in a 9-SOIC package and is surface-mountable. Its topology is Flyback, and it offers isolated output. The operating frequency ranges from 25kHz to 500kHz, with a power dissipation of 330 mW. Key control features include frequency control and soft start.

NCP1342BMDCDD1R2G Quick Information

Product Type: AC DC Converters, Offline Switches
Canonical Name: NCP1342 Quasi-Resonant Flyback Controller
Subcategory: AC DC Converters, Offline Switches

NCP1342BMDCDD1R2G Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

NCP1342BMDCDD1R2G Estimated Pricing

Qty Low High
1+ $0.75 $0.75

Estimated market price range - modelled values for guidance only, not live distributor offers.

NCP1342BMDCDD1R2G Features

  • Highly integrated quasi-resonant flyback controller.
  • Wide operating voltage from 9 V to 28 V.
  • Operates from -40°C to 125°C.
  • Features valley switching and frequency foldback.
  • Includes multiple fault protection features.

NCP1342BMDCDD1R2G Applications

  • Suitable for high-performance off-line power converters.
  • Enables low no-load power consumption.
  • Minimizes acoustic noise during operation.
  • Designed for high-frequency applications.

NCP1342BMDCDD1R2G FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range?

9V to 28V.

What is the operating temperature range?

-40°C to 125°C (junction).

What package is the NCP1342BMDCDD1R2G available in?

9-SOIC surface mount package (10-SOP with 9 leads).

What is the switching frequency range?

25kHz to 500kHz.

What fault protections does it have?

Current limiting, over load, over power, over temperature, over voltage, short circuit.

Is it an isolated or non-isolated controller?

Isolated.

Does it have internal switches?

No, it requires an external switch.

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