ON Semiconductor – Signal and Power Devices

Manufacturer of Semiconductors and Electrical Components. They are a major supplier of power components and systems to designers of computers, communications, consumer, and industrial systems.

ON Semiconductor – Signal and Power Devices

They have a product portfolio that include energy efficient power components, signal management, logic, discrete and custom devices.

These are used for LED Lighting, Industrial Applications, Networking & Telecommunications, Power Supply and Circuit Protection.

NCP1247 Controller – Fixed Frequency, Current Mode, for Flyback Converters

The NCP1247 is a new fixed?frequency current?mode controller featuring the Dynamic Self?Supply. This function greatly simplifies the design of the auxiliary supply and the VCC capacitor by activating the internal startup current source to supply the controller during start?up, transients, latch, stand?by etc.

NCP1247 Controller

This device contains a special HV detector which detect the application unplug from the AC input line and triggers the X2 discharge current. This HV structure allows the brown?out detection as well.

ON Semiconductor
5005 East McDowell Road, Phoenix, AZ 85008, USA.

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