TDA7295 STMicroelectronics

TDA7295 80V - 80W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY VERY HIGH OPERATING VOLTAGE RANGE MULTIPOWER BCD TECHNOLOGY (40V) DMOS POWER STAGE HIGH OUTPUT POWER (UP TO 80W MUSIC POWER) MUTING/STAND-BY FUNCTIONS NO SWITCH ON/OFF NOISE NO BOUCHEROT CELLS VERY LOW DISTORTION Multiwatt 15 VERY LOW NOISE ORDERING NUMBER: TDA7295 SHORT CIRCUIT PROTECTION THERMAL SHUTDOWN to the high out current capability it is able to sup- DESCRIPTION ply the highest power into both 4 and 8 loads even in presence of poor supply regulation, with The TDA7295 is a monolithic integrated circuit in high Supply Voltage Rejection. Multiwatt15 package, intended for use as audio class AB amplifier in Hi-Fi field applications The built in muting function with turn on delay (Home Stereo, self powered loudspeakers, Top- simplifies the remote operation avoiding switching class TV). Thanks to the wide voltage range and on-off noises. Figure 1: Typical Application and Test Circuit C7 100nF +Vs C6 1000m F R3 22K +Vs +PWVs C2 R2 713 22m F 680W IN- 2 - 14 OUT C1 470nF IN+ 3 + C5 22m F R1 22K 6 IN+MUTE 4 BOOT- R6 STRAP 2.7W R5 10K MUTE 10 VM MUTE THERMAL S/C STBY 9 C10 SHUTDOWN PROTECTION VSTBY STBY 100nF R4 22K 1 8 15 STBY-GND -Vs -PWVs C3 10m F C4 10m F C9 100nF C8 1000m F D93AU011 -Vs Note: The Boucherot cell R6, C10, normally not necessary for a stable operation it could be needed in presence of particular load impedances at V <25V. S April 2003 1/13TDA7295 PIN CONNECTION (Top view) BLOCK DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit V Supply Voltage 40 V S I Output Peak Current 6 A O P Power Dissipation T = 70C50W tot case T Operating Ambient Temperature Range 0 to 70 C op T , T Storage and Junction Temperature 150 C stg j 2/13