Class AB stereo amp with 150°C junction capability
The STMicroelectronics TDA7376PDTR is a Class AB stereo audio amplifier IC delivering 40W x 2 into a 4 Ohm load. It integrates depop, differential inputs, mute, standby, and short-circuit/thermal protection — a feature set aimed at automotive head units, powered speakers, and industrial audio systems where linearity matters more than the efficiency of a Class D stage. The -40°C to 150°C junction temperature range means it can sit in a hot dashboard or a sealed enclosure without derating the output, which is unusual for a Class AB part and tells you the die and package are built for thermal cycling.
40W x 2 @ 4Ω — what it means for the power budget
At 40W per channel into 4Ω, the TDA7376PDTR requires a supply of 8V to 18V. The PowerSO-36 exposed top pad must be soldered to a copper land for heat dissipation.
Package and mounting — PowerSO-36 exposed pad
The PowerSO-36 with exposed top pad is a surface-mount package designed for power dissipation. The supply range of 8V to 18V covers both 12V automotive systems and regulated rails in industrial audio.