LM3886 Minimus Power – Audio Amplifier 70 Watts RMS

LM3886 Minimus Power – Audio Amplifier 70 Watts RMS

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Circuit compact audio power amplifier using integrated circuit National Semiconductors LM6886TF, PCB compact, making it ideal for use where you need a compact amplifier with high power and high quality audio. Ideal for use in various applications such as, computer games, Mp3 Player, Home Theater, Surround sound, etc.

About the amplifier circuit with LM3886 – Minimus Power

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LM3886 is a single-channel, high-performance audio power amplifier IC produced by National Semiconductor (NS) company  , the maximum continuous output power up to 60W, from the launched time to now, was loved by the majority of audiophiles.

The single-channel power amplifier design, a board per channel amplifier parts, amplifier board can be used in parallel.
Recommend DC dual 20-28V power supply.

68W cont. avg. output power into 4Ωat VCC=±28V
38W cont. avg. output power into 8Ωat VCC=±28V
50W cont. avg. output power into 8Ωat VCC=±35V

Schematic of the amplifier with LM 3886

lm3886 minimus power Schematic 595x466 LM3886 Minimus Power   Audio Amplifier 70 Watts RMS power amplifier circuit lm3886 Circuits Audio Amplifier

Suggested PCB for power amplifier LM 3886

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lm3886 minimus power pcb bottom LM3886 Minimus Power   Audio Amplifier 70 Watts RMS power amplifier circuit lm3886 Circuits Audio Amplifier
PCB Bottom side

 

lm3886 minimus power pcb top LM3886 Minimus Power   Audio Amplifier 70 Watts RMS power amplifier circuit lm3886 Circuits Audio Amplifier
PCB top Side
lm3886 minimus power layout amplifier LM3886 Minimus Power   Audio Amplifier 70 Watts RMS power amplifier circuit lm3886 Circuits Audio Amplifier
PCB component place

Part List to assemble amplifier Minimus Power

Part Value
Resistors 1/4 W* 5%
R1* 0.1 /5 Watts Ceramic resistor
R2, R3, R5 22k – Red, Red, Orange, Gold
R4, R6 1k – Brown, Black, Red, Gold
Capacitor’s
C1, C2, C3 100µF/63V Electrolytic Capacitor
C4 22µF/63V Electrolytic Capacitor
C5 1µF – capacitor polyester
Semiconductors
IC1 LM3886 – Audio amplifier integrated circuit
Connectors
IN Audio input connector
OUT Audio output connector
PW Connector for power supply
Miscellaneous
Welding, Wire, PCB, Box, Symmetrical power supply 18-42 Volts / 3 Amps, etc.

Download PDF Files – Datasheet LM3886, PCB top Side, PCB Bottom side, Lm3886 Schematic.
Download PDF

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3 COMMENTS

  1. On this PCB layout we cant can’t make a circuit , those white line should be black and back should be white and many mistake are der in the board

  2. TONI are you sure 1µF – capacitor polyester will work for this , according to me lm3886 support Mkt 2.2uf or 1 uf Audio capacitor like Dayton . Polyester may not work . I tried it work working

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