LM3886 Pinout, Equivalent, Application, Datasheet

This article provides a complete overview of the LM3886 high-performance audio amplifier IC. You will find detailed information about its features, specifications, working principle, and practical applications. The LM3886 pinout is also explained to help users properly integrate this IC into audio designs. Whether you are building a Hi-Fi amplifier, subwoofer system, or home audio setup, this guide covers everything you need.

LM3886 datasheet pinout equivalent specification application — LM3886 datasheet

Introduction

The LM3886 is a high-fidelity 68W Class-AB audio power amplifier IC known for ultra-low distortion, wide dynamic range, and exceptional sound quality. It is widely used in professional audio systems, home stereos, studio monitors, and DIY Hi-Fi projects. With its low-noise architecture and high-current capability, it delivers clean, powerful, and stable audio output even under demanding conditions.

LM3886 pinout datasheet equivalent specification pin configuration — LM3886 ic pins

Pin Configuration / Pinout of LM3886 Power Amplifier IC

Understanding the LM3886 Pinout Configuration

The LM3886 is available in the TO-220-11 package, designed specifically for audio amplifier topologies. A correct understanding of the LM3886 pinout ensures proper configuration, optimal thermal performance, and noise-free operation in Hi-Fi circuits.

Pin#	Pin Name
1	V+
2	NC
3	OUTPUT
4	V-
5	V+
6	NC
7	GND
8	MUTE
9	VIN-
10	VIN+
11	NC

LM3886 Pin Configuration Table

The LM3886 pinout supports both single-ended and bridge amplifier designs with high stability.

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

LM3886 Key Features

High output power: up to 68W
Ultra-low THD+N
Wide supply voltage range
High slew rate for excellent audio clarity
Low noise and high dynamic range
Signal-to-noise ratio up to 120dB
SPiKe™ protection: thermal, over-current & safe-area
Suitable for Hi-Fi and professional audio systems

LM3886 Specifications/Characteristics

Output power: up to 68W continuous
Total harmonic distortion (THD+N): extremely low
Supply voltage range: ±20V to ±42V
Output current capability: high-current Class-AB
Output noise: very low
Slew rate: approximately 19V/µs
Input impedance: dependent on circuit configuration
Operating junction temperature (TJ): up to 150°C
Storage temperature (Tstg): –40°C to +150°C
Package type: TO-220-11

Key Applications of LM3886 Power Amplifier IC

Hi-Fi home audio systems
Studio monitor amplifiers
Subwoofer amplifier modules
DIY audio amplifier projects
Active speaker systems
Professional audio equipment
Integrated stereo or mono power stages
Guitar and musical instrument amplifiers

LM3886 Equivalent ICs / Alternatives

(Verify pin compatibility before using substitutions)

LM3876
LM4780 (dual 60W amplifier)
TDA7294
TDA7293
TDA2050 (lower power)
Discrete Class-AB amplifier modules

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Stereo Amplifier TDA7297 Dual-Bridge Circuit Diagram — **Variable Power Supply 0-30V_10A Circuit Diagram**

Working Principle of LM3886

The LM3886 operates as a high-fidelity Class-AB audio power amplifier. Internally, it employs precision input stages, a high-current power transistor section, and a low-distortion feedback network to maintain linearity across the full audio bandwidth.
Its SPiKe™ protection system continuously monitors temperature, current, and safe-operating area conditions, ensuring clear and uninterrupted audio even when the amplifier is pushed to its limits. The IC can be configured for single-channel, dual-channel, or bridged high-power output designs.

Frequently Asked Questions (FAQ)

Q1: What is the output power of LM3886?
Up to 68W continuous, depending on supply voltage and heatsink efficiency.

Q2: What supply voltage does it need?
Typically ±20V to ±42V dual supply for optimal performance.

Q3: Does the LM3886 require a heatsink?
Yes. Since it dissipates significant heat at high power, a properly rated heatsink is essential.

Q4: Can it be used in bridge mode?
Yes, dual LM3886 chips can be configured for a high-power bridged amplifier.

Q5: Is the IC suitable for subwoofers?
Absolutely—it delivers clean, powerful low-frequency performance.

Conclusion

The LM3886 is one of the most respected audio amplifier ICs, delivering professional-grade sound with high power, low distortion, and exceptional reliability. With a clear understanding of its pinout, specifications, and operating principles, this IC can be used to build Hi-Fi amplifiers, active speaker systems, and high-performance audio equipment. Its robustness and audio clarity make it a top choice for both DIY enthusiasts and professionals.

Datasheet of LM3886 Power Amplifier IC

Click the following Button below to download the datasheet of LM3886 :

Download Datasheet

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