TEA2025B

Overview

The TEA2025B is a monolithic stereo audio amplifier IC in PowerDIP-16 packaging. It operates on a supply voltage range of 3V to 12V, with an absolute maximum rating of 15V. The device delivers up to 2.3W per channel at 9V into 4Ω loads and supports bridge mode for higher power output. Key electrical parameters include a quiescent current of 35mA typical, a voltage gain of 45dB adjustable via external resistors, and high channel separation. It features integrated thermal protection and soft clipping.

Feature Summary

• Supports dual stereo or bridge connection modes with minimal external components
• Integrated thermal protection circuit prevents damage from excessive junction temperatures
• Soft clipping functionality manages signal peaks without harsh distortion
• Very low switch-on/off noise characteristics reduce audible artifacts

Applications

• Portable radio cassette players
• Dual power audio amplification systems
• Bridge-connected high-power audio applications

Procurement Notes

Verify the specific package type matches the design requirements, as the TEA2025 series includes both PowerDIP and SO variants. Confirm that the application environment stays within the specified supply voltage limits to ensure reliable operation. Check for any environmental compliance markings if required by the target market regulations.

Selection Notes

Select this component when a compact stereo amplifier solution is needed for portable devices. The adjustable gain feature allows flexibility in system design. Ensure adequate heatsinking or copper area is provided on the PCB to manage thermal resistance, especially in bridge mode configurations where power dissipation is higher.

Part Context

The TEA2025B belongs to the TEA2025 family of stereo audio amplifiers manufactured by STMicroelectronics. It is designed specifically for portable audio equipment requiring efficient power delivery in a small footprint. The PowerDIP-16 package distinguishes it from the surface-mount SO20 variant, offering through-hole mounting options for specific manufacturing processes.

Replacement Considerations

TEA2025D (SO20 package)