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TDA7454 Datasheet(PDF) 1 Page - STMicroelectronics |
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TDA7454 Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 13 page  TDA7454 4 x 35W HIGH EFFICIENCY QUAD BRIDGE CAR RADIO AMPLIFIER HIGH OUTPUT POWER CAPABILITY: 4 x 40W/4 Ω MAX. 4 x 35W/4 Ω EIAJ. 4 x 25W/4 Ω @14.4V, 1KHz, 10% 4 x 60W/2 Ω MAX. 2 Ω DRIVING CAPABILITY DUAL MODE OPERATING EXTERNALLY PRESETTABLE: CONVENTIONAL CLASS A- B MODE, HIGH EFFICIENCY MODE LOW EXTERNAL COMPONENTS COUNT: – NO BOOTSTRAP CAPACITORS – NO EXTERNAL COMPENSATION – INTERNALLY FIXED GAIN (26dB) CLIPPING DETECTOR ST-BY FUNCTION (CMOS COMPATIBLE) MUTE FUNCTION (CMOS COMPATIBLE) AUTOMUTE AT MINIMUM SUPPLY VOLTAGE DETECTION LOW RADIATION Protections: OUPUT SHORT CIRCUIT TO GND; TO VS; ACROSS THE LOAD 3 STEPS OVERRATING CHIP TEMPERA- TURE WITH THERMAL WARNING LOAD DUMP VOLTAGE FORTUITOUS OPEN GND LOUDSPEAKER DC CURRENT ESD DESCRIPTION The TDA7454 is a new BCD technology QUAD BRIDGE type of car radio amplifier in Flexiwatt25 packagespecially intendedfor car radio applications. Among the features, its superior efficiency per- formance coming from the internal exclusive structure, makes it the most suitable device to simplify the thermal management in high power sets. The dissipated output power under average listening condition is in fact reduced up to 50% when compared to the level provided by conven- tional class AB solutions. October 1999 Flexiwatt 25 7 8 9 - + 5 2 3 + - 19 18 17 21 24 23 - + + - RIGHT FRONT RIGHT REAR LEFT FRONT LEFT REAR SVR 11 12 15 14 MUTE 22 ST-BY 4 IN LEFT REAR IN LEFT FRONT 100 µF IN RIGHT FRONT IN RIGHT REAR 0.22 µF 0.22 µF 0.22 µF 0.22 µF 10 CD 25 1 TAB 13 S-GND STD/HI- EFF 16 VCC2 VCC1 VCC 20 6 D94AU172C BLOCK & APPLICATION DIAGRAM MULTIPOWER BCD TECHNOLOGY 1/13 |
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