STMicroelectronics

TDA7491HV

TDA7491HV Description

The TDA7491HV from STMicroelectronics is a Class D stereo audio amplifier IC designed for high-efficiency audio applications. With a maximum output power of 20W per channel at 8Ω, it operates within a wide supply voltage range of 5V to 18V, making it suitable for both low-power and moderate-power audio systems. Packaged in a PowerSSO36 tube, this surface-mount device is optimized for compact PCB designs while maintaining robust performance. Although marked as Obsolete, it remains relevant for legacy designs due to its ROHS3 compliance and REACH unaffected status.

TDA7491HV Features

• High Efficiency: Class D architecture ensures minimal power dissipation, ideal for battery-operated devices.
• Dual-Channel Output: Delivers 20W per channel into 8Ω loads, providing balanced stereo audio performance.
• Wide Voltage Range (5V–18V): Supports flexible power supply configurations, from portable devices to fixed installations.
• Compact PowerSSO36 Package: Space-saving surface-mount design for high-density PCB layouts.
• Robust Compliance: Meets ROHS3 and EAR99 standards, ensuring environmental and export compliance.
• Thermal & Short-Circuit Protection: Built-in safeguards enhance reliability in demanding environments.

TDA7491HV Applications

The TDA7491HV excels in applications requiring high-efficiency amplification with moderate power output, such as:

• Portable Bluetooth Speakers: Optimized for battery life and thermal management.
• Home Audio Systems: Suitable for compact stereo amplifiers or soundbars.
• Automotive Infotainment: Operates reliably under variable voltage conditions.
• Television & Multimedia Devices: Space-constrained designs benefit from its PowerSSO36 footprint.

Conclusion of TDA7491HV

While the TDA7491HV is obsolete, its combination of efficiency, power output, and compact packaging makes it a viable choice for legacy or cost-sensitive audio designs. Its Class D architecture ensures energy-efficient operation, while the wide voltage range accommodates diverse applications. Engineers seeking a proven, compliant solution for stereo amplification may still find value in this IC, particularly in portable and embedded audio systems.