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LM386M-1

Name: LM386M-1
Rating: 4.7 (12 reviews)

IC AMP CLASS AB MONO 325MW 8SOIC

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Mfr。パート #LM386M-1
パッケージ 8-SOIC
データシート
在庫中4517

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仕様

Package	Bulk,Tube
ProductStatus	Obsolete
Type	Class AB
OutputType	1-Channel (Mono)
MaxOutputPowerxChannels@Load	325mW x 1 @ 8Ohm
Voltage-Supply	4V ~ 12V
MountingType	Surface Mount
OperatingTemperature	0°C ~ 70°C (TA)
SupplierDevicePackage	8-SOIC

概要

Description

The LM386M-1 is a low-voltage audio amplifier designed for portable applications, commonly found in battery-operated devices. It operates on a supply voltage from 4 to 12 volts, making it versatile for various projects. The amplifier features a gain of 200, which can be adjusted by connecting an external resistor and capacitor between pins 1 and 8.
This IC is particularly notable for its low power consumption and built-in short-circuit protection, enhancing its reliability. It has a wide frequency response, making it suitable for amplifying audio signals in small speakers and audio devices. The LM386M-1 is also designed for ease of use, requiring minimal external components, which simplifies the design process.
Typical applications include intercoms, televisions, radios, and DIY audio projects. Overall, the LM386M-1 is an efficient choice for amplifying audio signals in a compact form, making it popular among hobbyists and engineers alike.

Features

The LM386M-1 is a low-voltage audio power amplifier designed for battery-powered devices. Key features include:
1. Operating Voltage: It operates from 4V to 12V, making it suitable for a wide range of applications.
2. Gain: Fixed gain of 20, with the option to increase up to 200 by adding external resistors and capacitors.
3. Output Power: Delivers up to 1W output power into an 8-ohm load at 9V supply.
4. Low Quiescent Current: Consumes minimal current, ideal for portable applications.
5. Thermal Protection: Built-in thermal shutdown feature to prevent overheating.
6. Input Impedance: High input impedance allows easy interfacing with various sources.
7. Low Total Harmonic Distortion (THD): Provides high-quality audio reproduction.
The LM386M-1 is commonly used in applications like portable speakers, radios, and other low-power audio devices. Its compact size and efficiency make it a popular choice among hobbyists and designers.

Package

The LM386M-1 is typically packaged in an 8-pin mini-DIP (Dual In-line Package) configuration.

Pinout

The LM386M-1 is a low-voltage audio power amplifier with a total of 8 pins. Here is the pin configuration and their functions:
1. Input (Pin 1): This is the non-inverting input for the audio signal.
2. Gain (Pin 2): This pin sets the gain of the amplifier. It can be connected to a resistor and capacitor to set a desired gain, typically 20 (26 dB).
3. Bypass (Pin 3): This pin is used to improve stability and reduce noise when a capacitor is placed between this pin and ground.
4. Power Supply (Pin 4): The positive power supply input, typically connected to a voltage between 4V and 12V.
5. Output (Pin 5): This pin delivers the amplified audio signal to the speaker or load.
6. Ground (Pin 6): The ground connection for the device.
7. Thermal (Pin 7): This pin provides thermal protection.
8. Power Supply (Pin 8): The negative power supply input, often connected to ground in single-supply applications.
The LM386M-1 is commonly used in portable audio applications due to its low power consumption and compact size.

Manufacturer

The LM386M-1 is manufactured by Texas Instruments (TI), a leading American technology company. Founded in 1930, TI specializes in designing and manufacturing semiconductors and various integrated circuits. The company is well-known for its innovations in analog and digital signal processing, microcontrollers, and power management solutions. Texas Instruments serves a diverse range of markets, including automotive, industrial, consumer electronics, and communications. With a strong focus on research and development, TI is recognized for its contributions to the advancement of electronic technologies and is a key player in the global semiconductor industry.

Application

The LM386M-1 is a low-voltage audio amplifier commonly used in battery-powered devices. Its application areas include portable audio devices, small speakers, intercoms, radio receivers, and toys. It is ideal for use in alarm systems, voice synthesis, and mobile communication devices due to its compact size and efficiency. Additionally, it can be used in DIY electronics projects and sound output for microcontroller-based applications.

Equivalent

Equivalent products to the LM386M-1 chip include the LM386N-1, TLV2461, and TPA3110. These chips are generally used in audio amplification applications and share similar functionalities. However, it’s important to check specific parameters like voltage, gain, and package type to ensure compatibility for your specific use case. Always refer to the datasheets for precise specifications.