LM4871MX

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LM4871MX

+BOM

IC AMP CLASS AB MONO 3W 8SOIC

  • ManufacturerTexas Instruments

  • Mfr. Part #LM4871MX

  • Package SOIC (D)-8

  • In Stock2210

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Specifications

Attribute Value
Package Tape & Reel (TR),Bulk
Series Boomer®
ProductStatus Active
Type Class AB
OutputType 1-Channel (Mono)
MaxOutputPowerxChannels@Load 3W x 1 @ 3Ohm
Voltage-Supply 2V ~ 5.5V
Features Shutdown, Thermal Protection
MountingType Surface Mount
OperatingTemperature -40°C ~ 85°C (TA)
SupplierDevicePackage 8-SOIC

Overview

Description

The LM4871MX is an audio power amplifier designed for applications requiring a small, efficient, and low-power audio solution. It is commonly used in portable devices like smartphones, tablets, and other battery-powered electronics. This amplifier is capable of delivering 3 watts of continuous average power to a 3Ω load and operates at low voltage levels, which makes it suitable for battery-powered applications.
Key features include its low distortion, minimal external components required for operation, and the ability to provide high-quality audio output. It also has built-in features like thermal shutdown protection and short-circuit protection, enhancing its reliability and safety. The LM4871MX operates on a single supply voltage and employs a bridge-tied load (BTL) configuration, which eliminates the need for output coupling capacitors.
Packaged in a small, surface-mount form, the LM4871MX is optimal for space-constrained designs. Its efficient design helps extend battery life in portable applications, making it a popular choice for developers looking to integrate quality audio amplification in compact electronic devices.

Equivalent

The LM4871MX is an audio power amplifier chip. Equivalent products include:
1. TDA7266: A stereo audio amplifier with similar power output capabilities.
2. TDA2822M: A dual audio power amplifier suitable for portable devices.
3. MAX9710: A stereo, 3W audio power amplifier with similar features.
4. PAM8403: A 3W stereo class-D amplifier with high efficiency.
5. NJM2073: A low power audio amplifier with comparable specifications.
These equivalents may have variations in specifications, so it's crucial to check datasheets for compatibility.

Features

The LM4871MX is an audio power amplifier designed for portable electronic devices. It features a 3W output capability with a 5V power supply, making it suitable for driving small speakers. The amplifier operates in bridge-tied load (BTL) mode, which doubles the output power compared to single-ended configurations. It has a low supply current and features a shutdown function to reduce power consumption when the amplifier is not in use. The device is designed to provide high-quality audio output with low distortion and noise levels. It includes thermal shutdown protection and short-circuit protection to enhance reliability. Additionally, the LM4871MX supports a wide range of supply voltages, typically from 2V to 5.5V, which offers flexibility for various battery-operated applications. The SOIC-8 package makes it compact and suitable for applications where space is a concern. Overall, the LM4871MX is a versatile and efficient choice for enhancing audio capabilities in compact electronics.

Pinout

The LM4871MX is an audio power amplifier designed for driving low impedance loads, such as speakers. It typically comes in an 8-pin SOIC (Small Outline Integrated Circuit) package. Here's a brief overview of its pin configuration and functions:
1. Pin 1 (SHUTDOWN): This pin is used to put the amplifier into a low-power shutdown mode when driven high.
2. Pin 2 (Bypass): This pin is used to set the bias voltage for the amplifier's internal circuitry. A capacitor is often connected to this pin to minimize noise.
3. Pin 3 (GND): Ground connection for the amplifier.
4. Pin 4 (Audio Input): This pin is used to receive the audio signal input.
5. Pin 5 (VDD): Positive power supply pin.
6. Pin 6 (Audio Output): The output pin through which the amplified audio signal is delivered to the connected load.
7. Pin 7 (VO2): It's another output pin, used in bridge applications.
8. Pin 8 (VO1): Used in conjunction with VO2 for bridged output.
The LM4871MX is commonly used in applications where a bridge-tied load (BTL) configuration is needed to drive small speakers efficiently.

Manufacturer

The LM4871MX is manufactured by Texas Instruments (TI), an American technology company headquartered in Dallas, Texas. TI is known for its design and manufacturing of semiconductors and integrated circuits, which are used in a broad range of electronic devices. The company is noted for its role in the development of analog chips and embedded processors, which are integral to the functionality of modern electronics.

Application

The LM4871MX is a low-power audio amplifier commonly used in portable electronic devices. Its application areas include:
1. Mobile Phones and Tablets: Enhances audio output for better sound quality in small form factor devices.
2. Portable Media Players: Provides efficient audio amplification for personal music and video players.
3. Laptops and Notebooks: Used in compact speaker systems to improve audio clarity.
4. Handheld Gaming Devices: Enhances audio experience in portable gaming consoles.
5. Consumer Electronics: Suitable for use in devices like digital voice recorders and camcorders.
6. Personal Audio Systems: Ideal for docking stations and portable speaker systems.
The LM4871MX is valued for its efficiency, low distortion, and minimal external components requirement.

Package

The LM4871MX is a low-power audio amplifier housed in an 8-pin SOIC (Small Outline Integrated Circuit) package. It is designed for portable electronic devices, offering efficient amplification with minimal external components.

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