LM3886 Amplifier Circuit

Let’s take a look at the LM3886 Amplifier circuit. The LM3886 IC is available in any local electronics market, because it is a most popular hi-fi audio amplifier IC. This article will cover the circuit diagram, PCB layout and its general instructions to build a 3886 IC based audio amplifier.

LM3886 amplifier board

This is a high performance amplifier circuit and board. The sound quality of lm3886 is excellent because of the low signal to noise ratio of 92db at 2 microvolt. The single ic amplifier board is a simple and compact one, so easy to install on any amplifier cabinets.

Also Check : Power supply circuit for Amplifiers

The input voltage has no need to exceed 35v dual supply DC volt. I suggest using a 27-0-27 transformer for providing the power supply. The IC will produce much high heat on the back side, so you need to attach the IC with a good quality aluminum heatsink.

Table of Contents

LM3886 amplifier circuit diagram

Components list

• LM3886 IC.
• 1uf, 100uf, 4.7uf ( non polar capacitor ).
• 100nf capacitor
• 100k, 10k, 47k, 10R, 10k, 220k Resistors.
• 4A fuse
• 0.7uh inductor coil.

LM3886 IC pinout

LM3886 IC pinoutPIN NUMBERPIN FUNCTION1V+ supply voltage2Not connected3Speaker output4V- Supply5V+ Supply voltage6Not connected7Ground8Mute9-ve Input signal10+ve Input signal11Not connectedLM3886 pinout

Features of LM3886 amplifier

• Output RMS of 68 watt at 4 ohm load.

• 0.1% of total harmonic distortion (low noise in output).

• You can use 4 ohms or 8 ohms speakers on this circuit.

• Standard components are used in this circuit, so you can find these all from the local market.

• Low cost to build a mono amplifier.

• Best circuit for diy projects.

• Excellent sound quality with low noise.

>> Check other Power Audio Amplifier Circuits