TDA7266 Pinout, Equivalent, Application, Datasheet

The TDA7266 is a compact dual-bridge audio amplifier IC designed for low-distortion, high-efficiency stereo applications. It is widely used in multimedia speakers, small home audio systems, and TV audio amplification. Delivering balanced performance with minimal external components, the IC is ideal for compact amplifier designs. Understanding the TDA7266 pinout is essential before integrating it into any audio circuit.

Introduction

The TDA7266 is a dual BTL (Bridge-Tied Load) audio power amplifier capable of delivering efficient output power using a single power supply. With a maximum operating voltage of 20V and internal protection circuitry, it is designed for reliable and distortion-free audio reproduction. Its dual-bridge configuration eliminates the need for large output capacitors and improves output efficiency, especially in low-voltage systems such as PC speakers and portable amplifiers.

Pin Configuration / Pinout of TDA7266 Power Amplifier IC

Understanding the TDA7266 Pinout Configuration

Below is the pinout configuration of the TDA7266 IC (Multiwatt-15 package):

Note: DATASHEET DOWNLOAD button is provided end of this article.

TDA7266 Key Features

• Dual BTL (Bridge-Tied Load) amplifier channels
• Low distortion for clean audio output
• Thermal shutdown and short-circuit protection
• Works efficiently with a single supply
• Minimal external components required
• Suitable for compact and portable audio systems

TDA7266 Specifications/Characteristics

• Supply Voltage (Vs): Up to 20V
• Total Power Dissipation (Ptot): 33W
• Storage Temperature (Tstg): –40°C to +150°C
• Operating Temperature (Tj): Up to +150°C
• Channel Configuration: Dual Bridge Output
• Output Type: Class AB Audio Amplifier
• Package: Multiwatt-12 / Multiwatt-15 (varies by model)
• Short-Circuit Protection: Integrated
• Thermal Shutdown: Integrated

Key Applications of TDA7266 Power Amplifier IC

• Multimedia speaker systems
• TV and monitor audio output
• Portable audio amplifiers
• Small home stereo systems
• DIY audio projects
• Active speaker modules

TDA7266 Equivalent ICs / Alternatives

(Verify pin compatibility before using substitutions)

• TDA7265
• TDA7269A
• TDA7056B
• PAM8610 (Class D alternative)
• TDA1517

More Circuit Layouts

Working Principle of TDA7266

The TDA7266 operates using two independent BTL amplifier stages, each capable of driving a speaker without requiring an output coupling capacitor. In BTL mode, the load is connected between two active outputs, doubling the voltage swing across the speaker and improving output power efficiency. The IC amplifies the input audio signal with low noise and minimal distortion, making it suitable for high-quality stereo audio in compact designs. Built-in thermal and overload protection ensures stable operation under varying loads.

Frequently Asked Questions (FAQ)

Q1: Is the TDA7266 suitable for stereo amplifiers?
Yes, it includes dual BTL channels ideal for stereo applications.

Q2: Does the IC require a heat sink?
Yes, when driving higher loads, proper heat sinking is necessary.

Q3: Can it run on a single power supply?
Absolutely, it is designed for single-supply operation.

Q4: What speaker impedance is recommended?
Typically 4Ω or 8Ω speakers work best with this IC.

Conclusion

The TDA7266 is a reliable and efficient dual-bridge audio amplifier IC designed for compact and medium-power audio systems. Its low distortion, simple configuration, and dual-channel output make it ideal for applications such as multimedia speakers and embedded sound systems. With built-in protection features and minimal external components, it remains a popular choice for both DIY audio builders and commercial audio designers.

Datasheet of TDA7266 Power Amplifier IC

Click the following Button below to download the datasheet of TDA7266 :

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