TDA7294 Datasheet 100 V, 100 W DMOS audio amplifier with mute/st-by Features MULTIPOWER BCD TECHNOLOGY Very high operating voltage range ( 40 V) DMOS power stage High output power (up to 100 W music power) Muting/stand-by functions No switch on/off noise No boucherot cells Very low distortion Multiwatt15V Multiwatt15H Very low noise Short circuit protection Thermal shutdown Description The TDA7294 is a monolithic integrated circuit in Multiwatt15 package, intended for use as audio class AB amplifier in Hi-Fi field applications (Home Stereo, self powered loudspeakers, Topclass TV). Thanks to the wide voltage range and to the high out current capability it is able to supply the highest power into both 4 and 8 loads even in presence of poor supply regulation, with high supply voltage rejection. The built in muting function with turn on delay simplifies the remote operation avoiding switching on-off noises. Maturity status link TDA7294 Order code Package TDA7294V Multiwatt15V TDA7294HS Multiwatt15H DS0013 - Rev 8 - July 2020 www.st.com For further information contact your local STMicroelectronics sales office.TDA7294 Typical application 1 Typical application Figure 1. Typical application and test circuit C7 100nF +Vs C6 1000F R3 22K +Vs +PWVs C2 R2 7 13 22F 680 IN- 2 - 14 OUT C1 470nF IN+ 3 + C5 22F R1 22K 6 IN+MUTE 4 BOOT- R6 STRAP 2.7 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 10F C4 10F C9 100nF C8 1000F -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 < 25 V. S DS0013 - Rev 8 page 2/31