STMicroelectronics

TEA2025D

TEA2025D Description

The TEA2025D from STMicroelectronics is a Class AB audio amplifier IC designed for mono or stereo output configurations. It delivers 4.7W of power into an 8Ω load in mono mode or 2.4W per channel in stereo mode, making it suitable for low-to-medium power audio applications. Operating within a 3V to 12V supply range, this surface-mount (SO-20 package) amplifier is optimized for efficiency and reliability. Though marked as obsolete, it remains a viable choice for legacy designs due to its robust performance and thermal protection features.

TEA2025D Features

• Depop Circuitry: Minimizes audible pops during power-on/off, enhancing user experience.
• Thermal Protection: Safeguards the IC from overheating, ensuring long-term durability.
• Wide Voltage Range (3V–12V): Supports flexible power supply configurations, including battery-operated devices.
• ROHS3 Compliant & REACH Unaffected: Meets environmental and regulatory standards.
• Surface-Mount Design (SO-20): Ideal for compact PCB layouts in space-constrained applications.

TEA2025D Applications

• Portable Audio Devices: Such as radios, MP3 players, and Bluetooth speakers, where efficient power use is critical.
• Automotive Infotainment: Auxiliary audio systems requiring stable performance under varying voltages.
• Consumer Electronics: TVs, set-top boxes, and gaming peripherals benefiting from its depop feature.
• Legacy System Upgrades: Retrofitting older audio equipment without major redesigns.

Conclusion of TEA2025D

The TEA2025D balances power efficiency, thermal resilience, and compact form factor, making it a pragmatic choice for audio amplification in cost-sensitive or legacy projects. While newer alternatives exist, its depop suppression and wide voltage tolerance provide distinct advantages in noise-sensitive applications. Engineers valuing reliability and simplicity may still find it a compelling option despite its obsolete status.