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ONSEMI NCP1340B3D1R2G Quasi-Resonant Flyback Controller

The NCP1340B3D1R2G is a highly integrated, quasi-resonant flyback controller designed for efficient off-line power converters. It features valley lockout circuitry, frequency foldback, skip mode, and active X2 capacitor discharge for low no-load power consumption below 30 mW. The device offers multiple protective features including brownout detection, over power protection, overvoltage and overtemperature protections, line removal detection, and integrated high-voltage start-up circuitry. Its optimized low-current design ensures reliable operation in low-power applications, making it suitable for adapters and power supplies where efficiency, safety, and low standby power are critical.

Authorized Distributors
Source:Newark
Part No:NCP1340B3D1R2G
Stock:181
Inv Date:06-10-2026
Price: Unit price: $1.27
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Part No:NCP1340B3D1R2G
Stock:8549
Inv Date:06-11-2026
Price: Unit price: $1.27
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Part No:NCP1340B3D1R2G
Stock:0
Inv Date:06-11-2026
Price: Unit price: $1.103
Buy/RFQ:
Part No:NCP1340B3D1R2G
Stock:0
Inv Date:06-11-2026
Price: Unit price: $1.103
Buy/RFQ:

ONSEMI NCP1340B3D1R2G Quasi-Resonant Flyback Controller Specifications:

  • Wide Vcc Range from 9 V to 28 V
  • Integrated High-Voltage Startup Circuit with Brownout Detection
  • Active X2 Capacitor Discharge Capability
  • Over Power Protection (OPP) with Adjustable Threshold
  • Frequency Foldback with Minimum 25 kHz Clamp
  • Valley Lockout circuitry for stability
  • Skip Mode with Quiet-Skip Technology and Burst Regulation
  • Line Removal Detection for Safe Discharge of Input Capacitors
  • Overvoltage and Overtemperature Protection with Dedicated Fault Pin
  • SOP-8 and SOIC-9 Package Options
  • Maximum Junction Temperature 125°C
  • Low quiescent current for minimal standby power
  • Soft-start duration of approximately 4 ms
  • Frequency jittering for EMI reduction
  • Fault detection modes including latch and auto-recovery
  • Thermal shutdown built-in for robustness

Buy the Buy ON Semiconductor NCP1340B3D1R2G Part Number NCP1340B3D1R2G Online

Order the ON Semiconductor NCP1340B3D1R2G today to enhance your power supply designs with advanced features like valley lockout, frequency foldback, skip mode, and comprehensive protections. This high-performance controller provides excellent efficiency, minimal no-load power consumption below 30 mW, and safety compliance through line removal detection and input capacitor discharge circuitry. Perfect for adapters and off-line power systems, it ensures reliable operation across a broad input voltage range while reducing EMI through frequency jittering and noise suppression techniques. Experience superior control and rugged protection in your power management solutions with fast delivery online.

Buy ON Semiconductor NCP1340B3D1R2G now and experience unmatched reliability and performance in efficient, safe, and low-noise power supplies.

Frequently Asked Questions

Where can I buy ONSEMI NCP1340B3D1R2G?

You can click on the BUY or RFQ button to purchase NCP1340B3D1R2G from an authorized ONSEMI distributor.

How do I troubleshoot issues or seek technical support for part NCP1340B3D1R2G?

You can download the NCP1340B3D1R2G datasheet or visit the ONSEMI website for support.

Who is the manufacturer of NCP1340B3D1R2G?

ONSEMI

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