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LM3886 Datasheet, Circuit Schematic, Pinouts and Sources

LM3886 Amplifier Datasheet and Circuit Schematics

The LM3886 amp, is a high-performance audio power amplifier capable of delivering 68W of continuous average power to a 4 load and 38W into 8 with 0.1% THD+N from 20Hz-20kHz.

LM3886 datasheet for download LM3886T-picture

LM3886 Price Check

LM3886 Amplifier Technical Capabilities

The LM3886 amplifier is a high-performance audio power amplifier capable of delivering 68W of continuous average power to a 4 load and 38W into 8 with 0.1% THD+N from 20Hz-20kHz.

The performance of the LM3886 amplifier, utilizing its Self Peak Instantaneous Temperature (°Ke) (SPiKe™) protection circuitry, puts it in a class above discrete and hybrid amplifiers by providing an inherently, dynamically protected Safe Operating Area (SOA). SPiKe protection on the LM3886 amp means that these parts are completely safeguarded at the output against overvoltage, undervoltage, overloads, including shorts to the supplies, thermal runaway, and instantaneous temperature peaks.

The LM3886 amp maintains an excellent signal-to-noise ratio of greater than 92dB with a typical low noise floor of 2.0µV. It exhibits extremely low THD+N values of 0.03% at the rated output into the rated load over the audio spectrum, and provides excellent linearity with an IMD (SMPTE) typical rating of 0.004%.

* 68W cont. avg. output power into 4? at VCC = ±28V
* 38W cont. avg. output power into 8? at VCC = ±28V
* 50W cont. avg. output power into 8? at VCC = ±35V
* 135W instantaneous peak output power capability
* Signal-to-Noise Ratio = 92dB
* An input mute function
* Output protection from a short to ground or to the supplies via internal current limiting circuitry
* Output over-voltage protection against transients from inductive loads
* Supply under-voltage protection, not allowing internal biasing to occur when
* +
* = 12V, thus eliminating turn-on and turn-off transients
* 11-lead TO-220 package
* Wide supply range 20V - 94V


LM3886 Amp Circuit Schematic

lm3886 Circuit Schematic


LM3886 Amp Pinouts

LM3886 Pinout


LM3886 Amplifier Samples

The LM3886 amplifier is a product of National Semiconductor. Along with LM3886 datasheet your can order LM3886 amp samples here. You can obtain both the LM3886T amplifier samples and the LM3886TF samples. 

Need the LM3886 price or to buy an LM3886.  Try Digikey.


Project: Guitar Power Amp

This is a powerful amplifier based on the LM3886 or LM3876 IC. This little amp is capable of some massive sounds at up to 68 watts. You'll need 18 dc volt bipolar power.  Here's the spec. Source General Guitar Gadgets.


Project: Gaincard Like Amplifier

LM3886 2×68 Watt Amplifier Full Project description. In this application, we are building a gaincard like amplifier. This application type is named gainclone in audio world. To take a satisfactory audio response, we are adding a Linkwitz equaliser to the feedback line and adding bass compensation also. We are using LM3886 which is the revised version of its brother LM3875.  Full instuctions and circuit schematics, PCB board layout are here.


Project: LM3886 Based 300W Audio Power Amplifier

Full audio power amplifier project based on six LM3886 high performance ICs providing 300 watts of power into 4 Ohm speakers.  Futher information on the LM3886 Amp Project is here.


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