TDA2052H

Overview

The TDA2052H is a monolithic integrated circuit in a Heptawatt H package, designed as an audio class-AB amplifier for TV or Hi-Fi applications. It supports split supply operation with a voltage range up to ±25V and delivers high output power into 4Ω and 8Ω loads. Key specifications include a maximum music output power of 60W at 1kHz (IEC268-3 rules), continuous RMS power of 35W into 4Ω and 30W into 8Ω at 10% THD, and a total harmonic distortion typically below 0.1%. The device features built-in mute/stand-by functionality, AC short-circuit protection, thermal shutdown, and ESD protection.

Feature Summary

• Integrated Mute/Stand-by function simplifies remote operations and eliminates switching on/off noises
• Advanced AC short-circuit protection prevents dangerous DC current flow through the loudspeaker during faults
• Thermal shutdown mechanism linearly decreases current generation to protect the final stage from overheating
• High output current capability ensures stable performance even with poor supply regulation

Applications

• Hi-Fi audio amplification systems
• Television set audio circuits
• Multiway speaker system subwoofer drivers
• Mid/high frequency stereo channel amplifiers

Procurement Notes

Verify the specific suffix 'H' corresponds to the Heptawatt H package variant when sourcing. Confirm that the component meets the required operating temperature range of 0°C to +70°C for your application environment. Ensure proper heatsinking is utilized to manage power dissipation within the specified thermal resistance limits.

Selection Notes

Select this component for applications requiring high power delivery with low distortion in a single-channel configuration. Consider the Heptawatt H package dimensions for PCB layout compatibility. Evaluate the need for external components to set the closed-loop gain and time constants for the mute/stand-by function based on the desired system response.

Part Context

The TDA2052 belongs to STMicroelectronics' family of high-power audio amplifiers. It shares functional similarities with the TDA2050 but offers higher power capabilities and additional control features like the dedicated mute/stand-by pin. The 'H' suffix specifically denotes the Heptawatt H package variation, distinguishing it from other physical form factors available in the product line.

Replacement Considerations

TDA2052V

FAQ

How does the Mute/Stand-by function operate?

Pin 3 controls the amplifier status via three thresholds: Stand-by mode activates below 1V, Mute mode engages between 1.8V and 2.7V, and Play mode occurs above 2.7V.

What happens during an AC short-circuit condition?

The device enters Stand-by mode to limit dangerous DC current flowing through the loudspeaker. The amplifier resets only after the short-circuit is removed and the Pin 3 voltage drops below 1V.