N-Channel enhancement mode silicon gate power field effect transistors designed for applications such as switching
regulators, switchingconvertors, motordrivers, relaydrivers and drivers for high power bipolar switching transistors
requiring high speed and low gate drive power.

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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 ballas design engineer.

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