The NCP1246 is a fixed-frequency current-mode controller designed for flyback converters, featuring dynamic self-supply, brown-out detection, and excellent light load efficiency via frequency foldback and skip modes. It integrates fault detection, adjustable overload protection, thermal shutdown, and low no-load power consumption, making it ideal for offline power supplies such as adapters, battery chargers, and electronic power supplies. Its versatile operation modes, high-voltage start-up circuitry, and pulse-skipping features enable robust, energy-efficient power conversion adaptable to various load conditions.
Operating Frequency: 65 kHz or 100 kHz with ±6% jitter
Maximum On Time: 115 µs at 65 kHz, 8.0 µs at 100 kHz
Switching Frequency Range: 27 kHz to 100 kHz
Peak Drive Current: 500 mA source, 800 mA sink
Vcc Supply Range: 0 to 28 V, with Undervoltage Lockout at Vcc(on) 11.0–12.0 V
Overvoltage Detection: Vcc uvp at 28 V
Thermal Shutdown: Trip at 150°C, hysteresis 30°C
X2 Capacitor Discharge Feature: Saves 16-25 mW input power during no-line or unplug detection
Dynamic Self-Supply: Activates during startup, transients, and standby, simplifying auxiliary supply design
Light Load Modes: Frequency foldback down to 27 kHz, skip mode below 6% load for enhanced efficiency
Fault Protection: Timer-based overload latch or auto-recovery, with hysteresis and blanking periods
Package: SOIC-7 case, RoHS, Pb-Free, Halogen-Free
Buy the ON Semiconductor Series NCP1246 Flyback Controller: NCP1246BD065R2G
Purchase the ON Semiconductor Series NCP1246BD065R2G today and optimize your power supply design. Equipped with frequency foldback, skip mode, brown-out detection, and low standby power, this high-performance controller ensures reliable and efficient energy conversion for your electronic power solutions. Its versatile modes adapt to various load conditions, reducing energy waste in light loads and providing excellent performance and protection features. Perfect for AC-DC adapters, battery chargers, and consumer electronic power supplies, it guarantees dependable operation and energy savings in your applications.
Order your ON Semiconductor Series NCP1246BD065R2G flyback controller today and enhance power supply efficiency with robust features for energy-conscious projects.
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