TDA7266

Overview

The TDA7266 is a dual bridge audio amplifier designed for TV and portable radio applications. It operates on a wide supply voltage range of 3 V to 18 V, delivering 7 W + 7 W output power at THD = 10% with an 8 Ω load and 9.5 V supply. The device features internally fixed gain, eliminating the need for external SWR capacitors, bootstrap circuits, or Boucherot cells. It includes standby and mute functions, short-circuit protection, and thermal overload protection.

Feature Summary

• Dual bridge architecture optimized for single-supply operation
• Minimal external component requirements without bootstrap or SWR capacitors
• Integrated thermal overload and short-circuit protection mechanisms

Applications

• Television sets
• Portable radio devices

Procurement Notes

Verify the specific suffix against official STMicroelectronics documentation to confirm package type and pin configuration. Ensure the selected variant matches the required supply voltage range and output power specifications for the target application design.

Selection Notes

Select this component for designs requiring high efficiency with minimal external passive components. Verify that the operating temperature range meets environmental requirements and that the internal fixed gain aligns with input signal levels.

Part Context

This part belongs to the TDA7266 series of AB-class audio amplifiers from STMicroelectronics. It is distinct from other variants like the TDA7266D or TDA7266L based on package and channel configuration.

Replacement Considerations

Consult official datasheets for direct pin-compatible substitutes within the same series. Verify electrical parameters match before substitution.