The NCP1342 is a high-performance quasi-resonant flyback controller designed for off-line power supplies and adapters. It features an integrated active X2 capacitor discharge circuit, enabling no-load power consumption below 30 mW. The controller incorporates valley-lockout circuitry for stable valley switching, frequency foldback for efficiency at light loads, and advanced protection features such as brownout detection, overvoltage, overtemperature, and overload protection. Its wide Vcc range from 9 V to 28 V, low standby power, and burst mode operation make it ideal for energy-efficient and noise-sensitive applications, ensuring robust performance across various operating conditions.
Valley Lockout with Frequency Foldback and Dead-Time Control
Frequency Clamp: fixed at 110 kHz or externally adjustable
Frequency Minimum: 25 kHz
Soft-Start Duration: 4 ms
Protection Features: brownout, overvoltage, overtemperature, overload, short circuit
Low power standby operation, frequency jittering for EMI reduction
Discharge circuitry for X2 capacitors during line removal
Integrated fault detection with latch and auto-recovery modes
Wide temperature range: -40°C to 125°C
Buy the ON Semiconductor Series QRP: High-Frequency Quasi-Resonant Flyback Controller: NCP1342AMAACD1R2G
Purchase the ON Semiconductor NCP1342AMAACD1R2G online today to benefit from its advanced quasi-resonant control, minimal no-load power, and comprehensive protections. Designed for energy-efficient power supplies and adapters, this high-performance flyback controller offers stabilizing valley lockout, frequency foldback, and low EMI features. Its integrated X2 capacitor discharge circuit ensures safety during line removal, while soft-start and fault latch modes improve durability and reliability. Invest in this reliable power control solution for optimal efficiency and safety in your electronic designs.
Get ON Semiconductor NCP1342AMAACD1R2G today—built for precision, energy efficiency, and robust protection in power supply applications.
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