Audio Amplifier IC LM386:Where/How to use?

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Published: 05 May 2022 | Last Updated: 05 May 2022

10305

LM386N

LM386N

Texas Instruments

325mW W Audio Amplifiers 8 pins PDIP

Purchase Guide

325mW W Audio Amplifiers 8 pins PDIP

LM386 is a Audio Amplifier IC. This article covers the LM386 Audio Amplifier pinout, datasheet, equivalent, features, and other information on how to use and where to use this device.

This video is about how to make a decent performing LM386 amplifier, including schematic, layout, parts list and tips.

Make the PERFECT LM386 audio amplifier?

What is LM386?

LM386 is a widely used audio amplifier IC manufactured in 8 pin dip, VSSOP, SOIC and other packages. The IC is basically designed for low voltage commercial applications, apart from commercial applications it is also a famous IC among electronic hobbyists and experimenters. The internal gain of the IC is set to 20 but it can be adjusted by connecting a resistor and a capacitor in series between the pin number 1 and 8, by this procedure the user can adjust the gain between 20 to 200. Due to the small size, low quiescent current, and low voltage requirements this IC is ideal to use in a wide variety of portable battery-operated applications and devices. 


LM386 Pinout and Configurations

pinout.jpg

Pin NumberPin NameDescription
1,8GAINUsed to set the gain of the IC by connecting to a Capacitor
2Inverting Input (IN-)The Inverting Pin of the amplifier is normally grounded
3Non-Inverting Input (IN+)The Non-Inverting pin is provided with the audio signal
4GroundThe ground pin is connected to the ground of the system
5VoutProvides amplified audio output, connected to the speaker
6Vss/VccConnected to power
7BypassA bypass pin is used for connecting a decoupling capacitor


LM386 CAD Models

Symbol

symbol.jpg

Footprint

footprint.jpg

3D Models

3d.jpg

LM386 Applications

  • Sensor

  • Audio amplifiers for radios

  • Amplifier for computers, mp3 players, and other music playing devices

  • Toys

  • Sensor Circuits

  • Audio frequency signal Amplifications

  • Audio preamplifiers


Specifications

Texas Instruments LM386N technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments LM386N.
  • Type
    Parameter
  • Mount

    In electronic components, the term "Mount" typically refers to the method or process of physically attaching or fixing a component onto a circuit board or other electronic device. This can involve soldering, adhesive bonding, or other techniques to secure the component in place. The mounting process is crucial for ensuring proper electrical connections and mechanical stability within the electronic system. Different components may have specific mounting requirements based on their size, shape, and function, and manufacturers provide guidelines for proper mounting procedures to ensure optimal performance and reliability of the electronic device.

    Through Hole
  • Package / Case

    refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.

    PDIP
  • Number of Pins
    8
  • Power Dissipation (Max)
    1.25W
  • JESD-609 Code

    The "JESD-609 Code" in electronic components refers to a standardized marking code that indicates the lead-free solder composition and finish of electronic components for compliance with environmental regulations.

    e0
  • Pbfree Code

    The "Pbfree Code" parameter in electronic components refers to the code or marking used to indicate that the component is lead-free. Lead (Pb) is a toxic substance that has been widely used in electronic components for many years, but due to environmental concerns, there has been a shift towards lead-free alternatives. The Pbfree Code helps manufacturers and users easily identify components that do not contain lead, ensuring compliance with regulations and promoting environmentally friendly practices. It is important to pay attention to the Pbfree Code when selecting electronic components to ensure they meet the necessary requirements for lead-free applications.

    no
  • Moisture Sensitivity Level (MSL)

    Moisture Sensitivity Level (MSL) is a standardized rating that indicates the susceptibility of electronic components, particularly semiconductors, to moisture-induced damage during storage and the soldering process, defining the allowable exposure time to ambient conditions before they require special handling or baking to prevent failures

    1 (Unlimited)
  • ECCN Code

    An ECCN (Export Control Classification Number) is an alphanumeric code used by the U.S. Bureau of Industry and Security to identify and categorize electronic components and other dual-use items that may require an export license based on their technical characteristics and potential for military use.

    EAR99
  • Terminal Finish

    Terminal Finish refers to the surface treatment applied to the terminals or leads of electronic components to enhance their performance and longevity. It can improve solderability, corrosion resistance, and overall reliability of the connection in electronic assemblies. Common finishes include nickel, gold, and tin, each possessing distinct properties suitable for various applications. The choice of terminal finish can significantly impact the durability and effectiveness of electronic devices.

    Tin/Lead (Sn/Pb)
  • Max Operating Temperature

    The Maximum Operating Temperature is the maximum body temperature at which the thermistor is designed to operate for extended periods of time with acceptable stability of its electrical characteristics.

    70°C
  • Min Operating Temperature

    The "Min Operating Temperature" parameter in electronic components refers to the lowest temperature at which the component is designed to operate effectively and reliably. This parameter is crucial for ensuring the proper functioning and longevity of the component, as operating below this temperature may lead to performance issues or even damage. Manufacturers specify the minimum operating temperature to provide guidance to users on the environmental conditions in which the component can safely operate. It is important to adhere to this parameter to prevent malfunctions and ensure the overall reliability of the electronic system.

    0°C
  • Peak Reflow Temperature (Cel)

    Peak Reflow Temperature (Cel) is a parameter that specifies the maximum temperature at which an electronic component can be exposed during the reflow soldering process. Reflow soldering is a common method used to attach electronic components to a circuit board. The Peak Reflow Temperature is crucial because it ensures that the component is not damaged or degraded during the soldering process. Exceeding the specified Peak Reflow Temperature can lead to issues such as component failure, reduced performance, or even permanent damage to the component. It is important for manufacturers and assemblers to adhere to the recommended Peak Reflow Temperature to ensure the reliability and functionality of the electronic components.

    NOT SPECIFIED
  • Time@Peak Reflow Temperature-Max (s)

    Time@Peak Reflow Temperature-Max (s) refers to the maximum duration that an electronic component can be exposed to the peak reflow temperature during the soldering process, which is crucial for ensuring reliable solder joint formation without damaging the component.

    NOT SPECIFIED
  • Number of Channels
    1
  • Max Supply Voltage

    In general, the absolute maximum common-mode voltage is VEE-0.3V and VCC+0.3V, but for products without a protection element at the VCC side, voltages up to the absolute maximum rated supply voltage (i.e. VEE+36V) can be supplied, regardless of supply voltage.

    12V
  • Min Supply Voltage

    The minimum supply voltage (V min ) is explored for sequential logic circuits by statistically simulating the impact of within-die process variations and gate-dielectric soft breakdown on data retention and hold time.

    4V
  • Operating Supply Current

    Operating Supply Current, also known as supply current or quiescent current, is a crucial parameter in electronic components that indicates the amount of current required for the device to operate under normal conditions. It represents the current drawn by the component from the power supply while it is functioning. This parameter is important for determining the power consumption of the component and is typically specified in datasheets to help designers calculate the overall power requirements of their circuits. Understanding the operating supply current is essential for ensuring proper functionality and efficiency of electronic systems.

    4mA
  • Max Output Power

    The maximum output power = the maximum output current × the rated output voltage

    325mW
  • Power - Output

    Power Output in electronic components refers to the amount of electrical power that a device can deliver to a load. It is typically measured in watts and indicates the effectiveness of the component in converting electrical energy into usable work or signal. Power Output can vary based on the component's design, operating conditions, and intended application, making it a critical factor in the performance of amplifiers, power supplies, and other electronic devices. Understanding the Power Output helps in selecting appropriate components for specific applications to ensure efficiency and reliability.

    1W
  • Consumer IC Type

    Consumer IC Type refers to the specific type of integrated circuit (IC) that is designed for use in consumer electronic devices. These ICs are typically optimized for applications in products such as smartphones, tablets, televisions, and other consumer electronics. They are often characterized by features such as low power consumption, small form factor, and high performance to meet the demands of modern consumer devices. Consumer IC types may include microcontrollers, audio amplifiers, display drivers, and other specialized chips tailored for consumer electronics applications. Manufacturers develop and market these ICs to meet the unique requirements of the consumer electronics industry, providing solutions for a wide range of functions and applications in modern devices.

    AUDIO AMPLIFIER
  • RoHS Status

    RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.

    RoHS Compliant
  • Lead Free

    Lead Free is a term used to describe electronic components that do not contain lead as part of their composition. Lead is a toxic material that can have harmful effects on human health and the environment, so the electronics industry has been moving towards lead-free components to reduce these risks. Lead-free components are typically made using alternative materials such as silver, copper, and tin. Manufacturers must comply with regulations such as the Restriction of Hazardous Substances (RoHS) directive to ensure that their products are lead-free and environmentally friendly.

    Contains Lead
0 Similar Products Remaining

LM386 Features

  • Low noise and low distortion circuitry

  • Small Size (8 pin dip package)

  • Quiescent power is only 24mW on a 6V supply

  • The Current consumption is only 4mA in standby mode

  • Operated with wide supply voltage from 4V to 18V

  • External circuitry required only a few parts

  • Minimum to maximum voltage gain is from 20 to 200

  • Also manufactured in VSSOP & SOIC packages.

  • Max Output of LM386N-4 is 1000mW on 16V


LM386 Equivalents

LM386 Alternatives

Some alternative ICs you can use are LM4871AD620, IC6283, JRC4558, TDA2822MNJM2073, and MC34119.

 The ICs mentioned here are not an accurate replacement for LM386 because their internal and external circuitry is different, but if you are looking for 8 pin dip ICs which work on the same voltage and require low external parts, and also provide the same output then you can look for these ICs., 


LM386 Circuit

circuit diagram.jpg

LM386 Circuit Diagram

How to use LM386

The LM386 only requires a couple of capacitors and resistors to start working. A very basic commonly used LM386 circuit is shown below.

how touse.jpg

The IC is powered using pin 6 (typically 5 or 9V) and the ground pin 4 is connected to the ground. The inverting pin (pin 2) is normally grounded and the Non-inverting pin (pin 3) is provided with the audio signal. This audio signal can be from a microphone or even from a 3.5mm jack. The 10k resistor is added in series with the audio signal to act as a volume control. You can ignore this potentiometer if you want to operate in full volume.

 

Pin 1 and pin 8 are used to set the gain of the Amplifier. If there is nothing connected between these pins then the default gain will be 26 dB, but we can connect a 10 uF capacitor across it to get the maximum gain of the IC which is 46dB. Pin 7 is used to connect a filtering capacitor (0.1uf) for our amplifier IC to avoid unnecessary oscillations.  The amplified audio signal can be obtained from pin 5 which is connected to an 8-ohm speaker through a filtering capacitor. The RC network with 0.05uF and 10k resistor is optional.


Where to use LM386

The LM386 is a low-power audio frequency amplifier that is very commonly used in small audio amplifiers. The IC consumes very less power and hence can be operated using a 9V battery easily. It can easily drive an 8-ohm speaker with a variable gain of 20 to 200. Volume control and gain control are also possible in this. The IC comes in an 8-pin PDIP package and requires very less components to function hence it is highly easy to use.

 

So, if you are looking for an audio amplifier IC which can be powered using a battery for a portable application to drive an 8-ohm speaker then this IC might be the right choice for you. For driving heavy speakers you have to use the power amplifier ICs.


LM386 Manufacturer

Texas Instruments Inc. (TI)  is an American technology company that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globally. Its headquarters are in Dallas, Texas, United States. TI is one of the top ten semiconductor companies worldwide, based on sales volume. Texas Instruments's focus is on developing analog chips and embedded processors, which account for more than 80% of its revenue. TI also produces TI digital light processing (DLP) technology and education technology products including calculators, microcontrollers, and multi-core processors. To date, TI has more than 43,000 patents worldwide.


LM386 Package

PDIP (P)

PDIP (P).jpg

SOIC (D)

SOIC (D).jpg

VSSOP (DGK)

VSSOP (DGK).jpg

How to Safely Long Run LM386 in Circuit

To get long-term and stable performance from LM386 it is recommended to not operate the IC with more than 18V DC. Always check twice the connection in the circuit to save from accidental short circuit, white soldering makes sure that the IC will not get more than recommended soldering heat. Make sure to connect the IC’s power connections in the right polarity, do not operate the IC below 0 centigrade and above +70 centigrade, and always store the IC above -65 centigrade and below +150 centigrade.


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Datasheet PDF

Download datasheets and manufacturer documentation for Texas Instruments LM386N.

Parts with Similar Specs

Frequently Asked Questions

How does an LM386 work?

The Lm386 integrated chip is a low-power audio frequency amplifier, which uses a low-level power supply like batteries in electronic circuits. It is designed as 8 pins mini DIP package. This provides voltage amplification of 20. By using external parts voltage gain can be raised up to 200.

What is lm386 IC?

The LM386 is an integrated circuit containing a low voltage audio power amplifier. It is suitable for battery-powered devices such as radios, guitar amplifiers, and hobby electronics projects.

Which IC is used in audio amplifier?

The IC LM386 is a low-power audio amplifier, and it utilizes low-power supplies like batteries in electrical and electronic circuits. This IC is available in the package of mini 8-pin DIP.

Is lm386 an op amp?

The LM386 is a type of operational amplifier (Op-Amp). 

What type of amplifier is the TDA7052 designed for battery-fed portable audio applications?

Mono output amplifier.
LM386N

Texas Instruments

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