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ONSEMI NCP1343BADBDEAD1R2G Flyback Controller

The NCP1343 is a high-efficiency quasi-resonant flyback controller designed for off-line power converters and adapters. It features valley-lockout circuitry, frequency foldback, and quiet-skip technology to optimize performance at light loads while minimizing EMI and acoustic noise. Integrated protections include brownout detection, over-power, overvoltage, and overtemperature shutdown. Its fast start-up, low standby power consumption, and frequency management make it ideal for modern energy-efficient power supply designs, ensuring stable operation across varying loads and input conditions.

Authorized Distributors
Source:Newark
Part No:NCP1343BADBDEAD1R2G
Stock:2320
Inv Date:06-10-2026
Price: Unit price: $1.26
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Part No:NCP1343BADBDEAD1R2G
Stock:2023
Inv Date:06-11-2026
Price: Unit price: $1.25
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Part No:NCP1343BADBDEAD1R2G
Stock:0
Inv Date:06-11-2026
Price: Unit price: $1.092
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Part No:NCP1343BADBDEAD1R2G
Stock:0
Inv Date:06-11-2026
Price: Unit price: $1.092
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Part No:NCP1343BADBDEAD1R2G
Stock:2445
Inv Date:06-11-2026
Price: N/A
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ONSEMI NCP1343BADBDEAD1R2G Flyback Controller Specifications:

  • Wide Vcc Range from 9 V to 28 V
  • Overvoltage Protection at 28 V
  • Internal thermal shutdown at 140°C
  • Maximum supply voltage Vec(max) of 28 V
  • Start-up threshold at 16 V, falling to 85 V during operation
  • Frequency clamp adjustable from 25 kHz to 560 kHz
  • Soft-start duration of 4 ms
  • Skip mode with 25 kHz minimum frequency and Quiet-Skip function
  • Overpower and overvoltage protections with dedicated fault pins
  • Demagnetization detection with valley lockout and zero-current detection
  • Rapid frequency foldback and minimum peak current modulation for efficiency
  • Overcurrent and auto-recovery fault management with latch and auto-recovery modes
  • Jittering techniques for EMI reduction

Buy the Buy ON Semiconductor NCP1343 Part Number NCP1343BADBDEAD1R2G Online

Order the ON Semiconductor NCP1343 flyback controller online today. This advanced energy-efficient power supply solution features valley-lockout, frequency foldback, and quiet-skip technology. Designed for low standby power and high performance, it ensures stable operation across varying loads with integrated protections like brownout detection, over-voltage, and over-temperature shutdown. Ideal for adapters, open-frame power supplies, and energy-conscious designs, the NCP1343 delivers reliable, cost-effective power regulation while reducing EMI and acoustic noise for modern electronic applications.

Get ON Semiconductor NCP1343 today—built for high efficiency, minimal noise, and reliable power regulation in advanced power supply systems.

Frequently Asked Questions

Where can I buy ONSEMI NCP1343BADBDEAD1R2G?

You can click on the BUY or RFQ button to purchase NCP1343BADBDEAD1R2G from an authorized ONSEMI distributor.

How do I troubleshoot issues or seek technical support for part NCP1343BADBDEAD1R2G?

You can download the NCP1343BADBDEAD1R2G datasheet or visit the ONSEMI website for support.

Who is the manufacturer of NCP1343BADBDEAD1R2G?

ONSEMI

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