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The TA8252H is 4ch BTL audio power amplifier for car audioapplication.This IC can generate more high power: P OUT MAX = 37Was it is included the pure complementary PNP and NPNtransistor output stage.It is designed low distortion ratio for 4ch BTL audio poweramplifier,built − in stand − by function, muting function,clipdetector,and diagnosis circuit. Additionally, the AUX.amplifier is built − in, it can make the beepsignal etc.output to 2 channnels (out 1 and 4).It contains variouskind of protectors for car audio use.