TDA7266SA

Overview

The TDA7266SA is a dual bridge Class-AB audio amplifier manufactured by STMicroelectronics, designed for TV and portable radio applications. It operates on a single supply voltage ranging from 3 V to 18 V, delivering 7 W output power per channel into an 8 Ω load. The device features internally fixed gain of 26 dB and requires minimal external components, eliminating the need for SWR capacitors, bootstrap circuits, or Boucherot cells. It includes standby and mute functions alongside short-circuit and thermal overload protection.

Feature Summary

• Dual bridge architecture providing stereo output capability with minimal external component requirements
• Integrated protection mechanisms including thermal overload and short-circuit safeguards
• Operational flexibility through standby and mute control functions

Applications

• Television systems
• Portable radio devices
• Audio speaker amplification

Procurement Notes

Verify the specific suffix 'SA' against official STMicroelectronics documentation to confirm package type and pinout compatibility. Ensure the selected variant matches the required Multiwatt-15 or Clipwatt configuration for your design. Cross-reference electrical specifications such as supply voltage limits and output power ratings with the latest datasheet to avoid integration errors.

Selection Notes

Select this component when a high-power dual bridge amplifier is needed for single-supply applications. It is suitable for designs requiring robust protection features and simplified circuitry due to the absence of bootstrap or Boucherot cell requirements. Consider the 15-pin through-hole packaging constraints during PCB layout planning.

Part Context

The TDA7266 series encompasses various packages including the standard TDA7266 in Multiwatt-15, the TDA7266L in 10-SIP, and the TDA7266D in PowerSO-20. The TDA7266SA specifically denotes a variant within this family, typically associated with the Clipwatt or Multiwatt-15 package style, maintaining the core dual bridge functionality of the series.

Replacement Considerations

Direct substitutes include other variants within the TDA7266 family such as TDA7266 or TDA7266L, provided the package footprint and pinout are compatible. Verify that alternative packages like TDA7266D meet the voltage and power requirements, noting differences in maximum supply voltage and channel configuration.