TDA7454 STMicroelectronics

TDA7454 4 x 35W HIGH EFFICIENCY QUAD BRIDGE CAR RADIO AMPLIFIER HIGH OUTPUT POWER CAPABILITY: MULTIPOWER BCD TECHNOLOGY 4 x 40W/4 MAX. 4 x 35W/4 EIAJ. 4 x 25W/4 14.4V, 1KHz, 10% 4 x 60W/2 MAX. 2 DRIVING CAPABILITY DUAL MODE OPERATING EXTERNALLY PRESETTABLE: CONVENTIONAL CLASS A- B MODE, HIGH EFFICIENCY MODE Flexiwatt 25 LOW EXTERNAL COMPONENTS COUNT: NO BOOTSTRAP CAPACITORS NO EXTERNAL COMPENSATION LOUDSPEAKER DC CURRENT INTERNALLY FIXED GAIN (26dB) ESD CLIPPING DETECTOR ST-BY FUNCTION (CMOS COMPATIBLE) DESCRIPTION MUTE FUNCTION (CMOS COMPATIBLE) The TDA7454 is a new BCD technology QUAD AUTOMUTE AT MINIMUM SUPPLY BRIDGE type of car radio amplifier in Flexiwatt25 VOLTAGE DETECTION package specially intended for car radio applications. LOW RADIATION Among the features, its superior efficiency per- formance coming from the internal exclusive Protections: structure, makes it the most suitable device to OUPUT SHORT CIRCUIT simplify the thermal management in high power TO GND TO V ACROSS THE LOAD S sets. The dissipated output power under average 3 STEPS OVERRATING CHIP TEMPERA- listening condition is in fact reduced up to 50% TURE WITH THERMAL WARNING when compared to the level provided by conven- LOAD DUMP VOLTAGE tional class AB solutions. FORTUITOUS OPEN GND BLOCK & APPLICATION DIAGRAM V CC1 6 STD/HI- EFF 16 20 V CC V CC2 - 7 0.22F 11 IN RIGHT 8 RIGHT FRONT FRONT + 9 S-GND ST-BY 4 13 5 + 0.22F IN RIGHT 12 2 RIGHT REAR REAR 3 - MUTE 22 - 19 0.22F 15 IN LEFT 18 LEFT FRONT FRONT + 100F 17 SVR TAB 10 1 21 + 0.22F 14 IN LEFT 24 LEFT REAR REAR CD 25 23 - D94AU172C September 2013 1/13TDA7454 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit V Operating Supply Voltage 18 V op V DC Supply Voltage 28 V S V Peak Supply Voltage (for t = 50ms) 40 V peak I Output Peak Current (not repetitive t = 100s) 8 A O I Output Peak Current (repetitive f > 10Hz) 6 A O P Power Dissipation T = 70C86W tot case T , T Storage and Junction Temperature -55 to 150 C stg j THERMAL DATA Symbol Description Value Unit R Thermal Resistance Junction-case Max 1 C/W th j-case PIN CONNECTION (Top view) 25 CD 24 PW GND LR 23 OUT LR- 22 MUTE OUT LR+ 20 V CC2 19 OUT LF- 18 PW GND LF 17 OUT LF+ 16 STD/HEFF 15 IN LF 14 IN LR 13 S GND 12 IN RR 11 IN RF 10 SVR 9 OUT RF+ 8 PW GND RF 7 OUT RF- 6 V CC1 OUT RR+ 4 ST-BY 3 OUT RR- 2 PW GND RR 1 TAB D94AU173A 2/13