Low−standby High Performance Pwm Controller

Housed in SO16 the NCP1239 represents a major leap toward ultracompact Switch Mode Power Supplies specifically tailored for medium to high power offline applications, e.g. notebook adapters. The NCP1239 offers everything needed to build a rugged and efficient power supply, including a dedicated event management to drive a Power Factor Correction (PFC) frontend circuitry. The circuit disables the frontend PFC stage while still in fault or standby conditions by interrupting the PFC controller powering for improved noload consumption figures. As soon as normal operating mode recovers, the NCP1239 feeds back the PFC that wakesup. When power demand is low, the IC automatically enters the socalled skipcycle mode and provides excellent efficiency at light loads. Because this occurs at a user adjustable low peak current, no acoustic noise takes place. By ON Semiconductor
NCP1239 's PackagesNCP1239 's pdf datasheet

NCP1239 Pinout, Pinouts
NCP1239 pinout,Pin out
This is one package pinout of NCP1239,If you need more pinouts please download NCP1239's pdf datasheet.

NCP1239 Application circuits
NCP1239 circuits
This is one application circuit of NCP1239,If you need more circuits,please download NCP1239's pdf datasheet.

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