Specifications
| Attribute | Value |
| Package | Tube |
| Series | Overture™ |
| ProductStatus | Discontinued at Digi-Key |
| Type | Class AB |
| OutputType | 1-Channel (Mono) |
| MaxOutputPowerxChannels@Load | 68W x 1 @ 4Ohm |
| Voltage-Supply | 20V ~ 84V, ±10V ~ 42V |
| Features | Mute, Short-Circuit and Thermal Protection |
| MountingType | Through Hole |
| OperatingTemperature | -20°C ~ 85°C (TA) |
| SupplierDevicePackage | TO-220-11 |
Overview
Description
The LM3886T is a high-performance audio power amplifier IC manufactured by Texas Instruments. It is designed to deliver high-quality sound with low distortion and minimal noise, ideal for use in audio applications like home theater systems, stereo amplifiers, and musical instrument amplifiers. The "T" suffix indicates a TO-220 package, which is a type of through-hole package that is easy to mount on printed circuit boards.
Key features of the LM3886T include a continuous output power of up to 68 watts into a 4-ohm load with a ±28V power supply, and a wide supply voltage range from ±10V to ±42V. It also offers protection mechanisms such as over-voltage, under-voltage, over-temperature, and short-circuit protection. Additionally, the IC boasts a high signal-to-noise ratio and low Total Harmonic Distortion (THD), ensuring clear and precise audio output. The LM3886T is favored for its thermal protection and mute feature, which contributes to building reliable and robust audio amplifier designs.
Key features of the LM3886T include a continuous output power of up to 68 watts into a 4-ohm load with a ±28V power supply, and a wide supply voltage range from ±10V to ±42V. It also offers protection mechanisms such as over-voltage, under-voltage, over-temperature, and short-circuit protection. Additionally, the IC boasts a high signal-to-noise ratio and low Total Harmonic Distortion (THD), ensuring clear and precise audio output. The LM3886T is favored for its thermal protection and mute feature, which contributes to building reliable and robust audio amplifier designs.
Equivalent
The LM3886T is a high-performance audio power amplifier. Equivalent products include:
1. TDA7294: A similar high-power amplifier with similar voltage and power capabilities.
2. LM3875: Another National Semiconductor chip with similar features, though with slightly lower output.
3. LME49810: A high-fidelity audio power amplifier driver, typically requiring additional external transistors.
4. STA540: A dual/quad power amplifier suitable for similar applications, albeit with different power ratings.
When selecting an equivalent, consider the specific voltage, power, and thermal requirements of your application.
1. TDA7294: A similar high-power amplifier with similar voltage and power capabilities.
2. LM3875: Another National Semiconductor chip with similar features, though with slightly lower output.
3. LME49810: A high-fidelity audio power amplifier driver, typically requiring additional external transistors.
4. STA540: A dual/quad power amplifier suitable for similar applications, albeit with different power ratings.
When selecting an equivalent, consider the specific voltage, power, and thermal requirements of your application.
Features
The LM3886T is a high-performance audio power amplifier IC known for its excellent sound quality and reliability. Key features include:
1. Continuous Power Output: Capable of delivering 68 watts of continuous average power into a 4-ohm load and 38 watts into an 8-ohm load, making it suitable for a variety of audio applications.
2. Low Distortion and Noise: Provides low total harmonic distortion plus noise (THD+N), ensuring clean and clear audio output.
3. High Supply Voltage Range: Operates efficiently over a wide voltage range, typically from ±10V to ±42V.
4. Thermal Protection: Includes a sophisticated thermal protection system that prevents the IC from overheating.
5. Mute Functionality: Features a mute function for easy control of audio output without noise interference.
6. Overload Protection: Equipped with short circuit and overvoltage protection to enhance durability.
7. Wide Bandwidth: Offers a wide frequency response, supporting high-fidelity audio reproduction.
These features make the LM3886T ideal for use in high-quality audio systems such as home stereos and professional audio equipment.
1. Continuous Power Output: Capable of delivering 68 watts of continuous average power into a 4-ohm load and 38 watts into an 8-ohm load, making it suitable for a variety of audio applications.
2. Low Distortion and Noise: Provides low total harmonic distortion plus noise (THD+N), ensuring clean and clear audio output.
3. High Supply Voltage Range: Operates efficiently over a wide voltage range, typically from ±10V to ±42V.
4. Thermal Protection: Includes a sophisticated thermal protection system that prevents the IC from overheating.
5. Mute Functionality: Features a mute function for easy control of audio output without noise interference.
6. Overload Protection: Equipped with short circuit and overvoltage protection to enhance durability.
7. Wide Bandwidth: Offers a wide frequency response, supporting high-fidelity audio reproduction.
These features make the LM3886T ideal for use in high-quality audio systems such as home stereos and professional audio equipment.
Pinout
The LM3886T is an audio power amplifier IC with an 11-pin package. Its primary function is to deliver high-quality audio amplification with low distortion, making it suitable for high-fidelity audio applications.
Here is a brief description of its pins:
1. Non-Inverting Input: Positive input for the audio signal.
2. Inverting Input: Negative input for the audio signal, used for differential amplification.
3. V- (Negative Supply Voltage): Connects to the negative power supply.
4. Mute: Controls the mute function of the amplifier.
5. Ground (Signal Ground): Provides a ground reference for the input signal.
6. Output: Delivers the amplified audio signal to the load (e.g., speakers).
7. V+ (Positive Supply Voltage): Connects to the positive power supply.
8. Ground (Power Ground): Provides a ground reference for the power supply.
9. Bootstrap Capacitor: Used to enhance the amplifier's output drive capability.
10. No Connection: Not internally connected; often omitted in typical descriptions.
11. Standby: Controls the standby mode, allowing low power consumption when not in use.
The LM3886T is designed for use in applications requiring high power output and low noise, such as home audio systems, PA systems, and professional audio equipment.
Here is a brief description of its pins:
1. Non-Inverting Input: Positive input for the audio signal.
2. Inverting Input: Negative input for the audio signal, used for differential amplification.
3. V- (Negative Supply Voltage): Connects to the negative power supply.
4. Mute: Controls the mute function of the amplifier.
5. Ground (Signal Ground): Provides a ground reference for the input signal.
6. Output: Delivers the amplified audio signal to the load (e.g., speakers).
7. V+ (Positive Supply Voltage): Connects to the positive power supply.
8. Ground (Power Ground): Provides a ground reference for the power supply.
9. Bootstrap Capacitor: Used to enhance the amplifier's output drive capability.
10. No Connection: Not internally connected; often omitted in typical descriptions.
11. Standby: Controls the standby mode, allowing low power consumption when not in use.
The LM3886T is designed for use in applications requiring high power output and low noise, such as home audio systems, PA systems, and professional audio equipment.
Manufacturer
The LM3886T is a high-performance audio power amplifier originally manufactured by National Semiconductor. National Semiconductor was a company that specialized in designing and manufacturing analog devices, semiconductors, and integrated circuits. In 2011, National Semiconductor was acquired by Texas Instruments, a leading global semiconductor company known for its development and innovation in analog and embedded processing. Texas Instruments continues to manufacture and support a wide range of semiconductor products, including those initially developed by National Semiconductor, such as the LM3886T.
Application
The LM3886T is a high-performance audio power amplifier integrated circuit commonly used in audio applications. Its primary application areas include:
1. Home Audio Systems: Used in stereo amplifiers and home theater systems for clear sound reproduction.
2. Professional Audio Equipment: Integrated into mixers, powered speakers, and studio monitors for high-quality sound.
3. Musical Instrument Amplifiers: Provides amplification in electric guitar and keyboard amplifiers.
4. DIY Audio Projects: Favored by hobbyists for building custom amplifiers due to its ease of use and reliable performance.
5. Car Audio Systems: Enhances sound quality in automotive audio applications.
Its robust design ensures low distortion and high output power, making it versatile for various audio amplification needs.
1. Home Audio Systems: Used in stereo amplifiers and home theater systems for clear sound reproduction.
2. Professional Audio Equipment: Integrated into mixers, powered speakers, and studio monitors for high-quality sound.
3. Musical Instrument Amplifiers: Provides amplification in electric guitar and keyboard amplifiers.
4. DIY Audio Projects: Favored by hobbyists for building custom amplifiers due to its ease of use and reliable performance.
5. Car Audio Systems: Enhances sound quality in automotive audio applications.
Its robust design ensures low distortion and high output power, making it versatile for various audio amplification needs.
Package
The LM3886T is an audio power amplifier integrated circuit available in a TO-220 package type. This package includes metal tabs for heat dissipation and is designed for through-hole mounting. It provides high-quality audio amplification and is commonly used in audio equipment for its performance and compact size.
