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The is a switching power IC designed for high-efficiency DC-DC conversion in a compact package. It is most commonly known as an LED backlight driver found in LCD television sets. This chip is widely used in popular TV models from various brands, including the Konka LED42E330N and the Amoi 32-inch LCD TV series.
Below is an overview of the technical information for the SN51DP. SN51DP Component Overview SN51DP (often identified as SN51)