TDA7253

Overview

The TDA7253 is a Class AB audio power amplifier manufactured by STMicroelectronics, housed in an 11-pin Clipwatt package. It delivers 8W output power into an 8Ω load at a supply voltage of 26V with 10% THD. The device operates within a wide supply voltage range of 10V to 32V and features a mute facility for pop-free operation. Key electrical characteristics include a total quiescent current of 40mA, an input resistance of 200kΩ, and a supply voltage rejection ratio of 60dB.

Feature Summary

• Integrated mute function providing pop-free switching with low consumption
• AC short circuit protection to safeguard the output stage
• Thermal overload protection activated at 150°C junction temperature

Applications

• Audio amplification circuits requiring integrated protection
• Consumer electronics utilizing single-supply configurations
• Low-power Hi-Fi applications

Procurement Notes

Verify component authenticity through authorized channels as this part is marked obsolete. Confirm package integrity upon receipt, specifically checking the Clipwatt 11 pins for damage. Ensure design compatibility with legacy systems since active manufacturing has ceased. Review datasheet revisions for any updates regarding absolute maximum ratings before final implementation.

Selection Notes

Select this component for designs requiring built-in thermal and AC short-circuit protection without external monitoring. The wide supply voltage range supports flexible power rail configurations. Evaluate the 8W output capability against specific load impedance requirements. Consider the obsolete status when planning long-term production lifecycles or future maintenance needs.

Part Context

This monolithic integrated circuit belongs to STMicroelectronics' line of Class AB audio amplifiers. Designed for high reliability, it utilizes advanced semiconductor processes to minimize distortion. The Clipwatt packaging facilitates efficient heat dissipation while maintaining a compact footprint suitable for space-constrained electronic assemblies.

Replacement Considerations

TDA7253 is listed as obsolete. No direct substitute part numbers are confirmed in the provided documentation.