Fully Integrated Ballast Control Ic

The IR2157 is a fully integrated, fully protected 600V ballast control IC designed to drive virtually all types of rapid start fluorescent lamp ballasts. Externally program- mable features such as preheat time & frequency, ignition ramp characteristics, and running mode operating frequency provide a high degree of flexibility for the ballast design engineer. Comprehensive protection features such as protection from failure of a lamp to strike, filament failures, low dc bus conditions, thermal overload, or lamp failure during normal operation, as well as an Automatic restart function, have been included in the design. The heart of this control IC is a variable frequency Oscillator with externally programmmable deadtime. Precise control of a 50% duty cycle is accomplished using a T-flip-flop. The IR2157 is available in both 16 pin DIP and 16 pin narrow body SOIC packages. By International Rectifier Corp.
IR2157 's PackagesIR2157 's pdf datasheet
IR2157 pdf datasheet download


IR2157 Pinout, Pinouts
IR2157 pinout,Pin out
This is one package pinout of IR2157,If you need more pinouts please download IR2157's pdf datasheet.

IR2157 Application circuits
IR2157 circuits
This is one application circuit of IR2157,If you need more circuits,please download IR2157's pdf datasheet.


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