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ONSEMI NCP1341B5D1R2G Flyback Controller

The NCP1341 is a highly integrated quasi-resonant flyback controller designed for efficient off-line power converters. It features valley lockout circuitry, frequency foldback, skip modes with Quiet-Skip technology, and advanced protective features including brownout, overvoltage, and overcurrent protections. With a wide operating voltage range from 9 V to 28 V, integrated X2 capacitor discharge, and power excursion mode, it ensures low-no-load power consumption below 30 mW. Ideal for high-performance power supplies requiring fine stability, minimal EMI, and compact design.

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Part No:NCP1341B5D1R2G
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Inv Date:06-11-2026
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Part No:NCP1341B5D1R2G
Stock:2489
Inv Date:06-11-2026
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ONSEMI NCP1341B5D1R2G Flyback Controller Specifications:

  • Vcc Range: 9 V to 28 V
  • Overvoltage Protection: 28 V maximum Vcc
  • High-Voltage Startup Circuit with Brownout Detection
  • Integrated X2 Capacitor Discharge Capability
  • Frequency Foldback Mode with Minimum clamp at 25 kHz
  • Valley Lockout circuitry for stability across load variations
  • Skip Mode with Quiet-Skip technology for noise reduction
  • Power Excursion Mode (PEM) for up to 2x power during transient demand
  • Fault Pin for overvoltage and overtemperature detection
  • Thermal Shutdown at 140°C ± 5°C junction temperature
  • Line removal detection with active discharge circuit
  • Current limit threshold: adjustable and typical overcurrent detection at 1.2 V
  • Maximum On-Time: 32 µs
  • Operating frequency: up to 110 kHz with external FMAX resistor
  • Package: SOIC-8 NB, SOIC-9 NB

Buy the Buy ON Semiconductor NCP1341 High-Voltage Quasi-Resonant Controller Part Number NCP1341B5D1R2G Online

Purchase the ON Semiconductor NCP1341 flyback controller online today—engineered for high efficiency, low power consumption, and advanced protection. Its valley lockout circuitry, frequency foldback, skip modes with Quiet-Skip, and power excursion mode enable reliable operation across a wide load range. Compact and robust with integrated X2 capacitor discharge, this controller is ideal for low-no-load power supplies, adapters, and open-frame power systems. Ensure your design meets international safety standards while maximizing performance and minimizing EMI by buying from authorized ON Semiconductor distributors.

Get ON Semiconductor NCP1341 high-voltage flyback controller today—designed for optimal efficiency, low standby power, and robust protective features for reliable power supply solutions.

Frequently Asked Questions

Where can I buy ONSEMI NCP1341B5D1R2G?

You can click on the BUY or RFQ button to purchase NCP1341B5D1R2G from an authorized ONSEMI distributor.

How do I troubleshoot issues or seek technical support for part NCP1341B5D1R2G?

You can download the NCP1341B5D1R2G datasheet or visit the ONSEMI website for support.

Who is the manufacturer of NCP1341B5D1R2G?

ONSEMI

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