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.
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.
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