Audio Power Amplifier - LM386N-1, Low Voltage

Audio Power Amplifier - LM386N-1, Low Voltage

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LM386 Low Voltage Audio Power Amplifier

The LM386 is a mono low voltage amplifier that can be used in a variety of applications. It can drive loads from 4 Ω to 32 Ω. The gain is internally set to 20 but it can be modified from 20 to 200 by placing a resistor and capacitor between pins 1 and 8.

As this is an Op Amp it can be used in different configurations to fit in several applications. The internal gain setting resistor allows the LM386 to be used in a very low part count system. In addition a series resistor can be placed between pins 1 and 5 to modify the gain and frequency response for specific applications.

These are found in many small audio amplifiers and even tiny pedal sized guitar amplifiers! There are tons of possibilities for this little Op Amp.

RoHS Compliant
Item ID:
General Integrated Circuits
Product Measurements by Type
Analog Input Voltage (Vi)-0.4 V to 0.4 V
Bandwidth (BW)300 kHz
Harmonic Distortion0.2 %
Input Bias Current (IB)250 nA
Input Resistance (RIN)50 kΩ
Item Height0.288 in.
Item Length0.386 in.
Item Width0.33 in.
Operating Free-air Temperature (Toper)0°C to 70°C
Operating Supply Voltage (VS)4 V - 12 V
Output Power (POut) @ VS = 6 V≥ 250 mW, 325 mW typical
Output Power (POut) @ VS = 9 V≥ 500 mW, 700 mW typical
Output Power (POut) @ VS = 16 V≥ 700 mW, 100 mW typical
Power Supply Rejection Ratio (psrr)50 dB
Quiescent Current (IQ)≤ 8 mA, 4 mA typical
Speaker Impedance4 Ω
Supply voltage (VCC)4 V - 12 V
Thermal Resistance, junction to ambient (RθJA)53.4°C/W
Thermal Resistance, junction to board (RθJB)30.6°C/W
Thermal Resistance, junction to case (RθJC)42.1°C/W
Voltage Gain (AV)26 dB
Packaging Information
Packaging Dimensions0.386 in. × 0.33 in. × 0.288 in.
Weight (Packaging)0.001 lbs.

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Specifications, Files, and Documents

PDF: Specification Sheet Specification Sheet1.39 MB