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LM4871M
+BOMIC AMP CLASS AB MONO 3W 8SOIC
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ManufacturerTexas Instruments
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Mfr. Part #LM4871M
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Package SOIC (D)-8
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In Stock4425
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Specifications
| Attribute | Value |
| Package | Tube |
| 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 LM4871M is an audio power amplifier integrated circuit developed by Texas Instruments. It is designed to deliver approximately 3 watts of continuous average power to an 8-ohm load, making it suitable for applications such as portable audio devices, smartphones, and multimedia speakers. This IC operates with a low distortion rate and high signal-to-noise ratio, ensuring clear audio output.
The LM4871M operates from a single supply voltage range of 2V to 5.5V, making it versatile for battery-powered applications. It features a bridge-tied load (BTL) configuration, which doubles the voltage swing across the load, increasing the power output without the need for an output coupling capacitor or bootstrap capacitors, reducing component count and cost.
In addition to its power amplification capabilities, the LM4871M includes features such as thermal shutdown protection and short-circuit protection to enhance reliability. The chip is available in various package types, such as the SOIC (Small Outline Integrated Circuit), for easy integration into compact electronic designs.
The LM4871M operates from a single supply voltage range of 2V to 5.5V, making it versatile for battery-powered applications. It features a bridge-tied load (BTL) configuration, which doubles the voltage swing across the load, increasing the power output without the need for an output coupling capacitor or bootstrap capacitors, reducing component count and cost.
In addition to its power amplification capabilities, the LM4871M includes features such as thermal shutdown protection and short-circuit protection to enhance reliability. The chip is available in various package types, such as the SOIC (Small Outline Integrated Circuit), for easy integration into compact electronic designs.
Equivalent
The LM4871M is an audio power amplifier. Equivalent products include:
1. TDA2822M
2. NJM2073
3. TDA7266
4. PAM8403
These alternatives offer similar functionalities for low-power audio amplification tasks. Always check datasheets to ensure compatibility with your specific requirements.
1. TDA2822M
2. NJM2073
3. TDA7266
4. PAM8403
These alternatives offer similar functionalities for low-power audio amplification tasks. Always check datasheets to ensure compatibility with your specific requirements.
Features
The LM4871M is an audio power amplifier designed primarily for driving small speaker loads. Some of its key features include:
1. Output Power: It delivers 1W of continuous average power to an 8Ω load.
2. Wide Supply Voltage Range: Operates between 2.0V and 5.5V, making it suitable for various battery-powered applications.
3. Low Distortion: THD+N is typically 0.5% at 1kHz, ensuring clear audio output.
4. Shutdown Mode: Includes a shutdown function to minimize power consumption during inactivity.
5. Minimal External Components: Requires few external parts, simplifying circuit design and reducing costs.
6. Thermal Shutdown Protection: Built-in thermal shutdown to prevent damage from overheating.
7. Low Quiescent Current: Consumes minimal power during operation, enhancing battery life in portable devices.
8. Surface-Mount Package: Available in a small surface-mount package, suitable for compact designs.
These features make the LM4871M ideal for portable audio applications, such as smartphones, tablets, and other battery-operated devices.
1. Output Power: It delivers 1W of continuous average power to an 8Ω load.
2. Wide Supply Voltage Range: Operates between 2.0V and 5.5V, making it suitable for various battery-powered applications.
3. Low Distortion: THD+N is typically 0.5% at 1kHz, ensuring clear audio output.
4. Shutdown Mode: Includes a shutdown function to minimize power consumption during inactivity.
5. Minimal External Components: Requires few external parts, simplifying circuit design and reducing costs.
6. Thermal Shutdown Protection: Built-in thermal shutdown to prevent damage from overheating.
7. Low Quiescent Current: Consumes minimal power during operation, enhancing battery life in portable devices.
8. Surface-Mount Package: Available in a small surface-mount package, suitable for compact designs.
These features make the LM4871M ideal for portable audio applications, such as smartphones, tablets, and other battery-operated devices.
Pinout
The LM4871M is an audio power amplifier designed for driving speakers. It typically comes in an 8-pin SOIC (Small Outline Integrated Circuit) package. Here is a brief overview of its pin configuration and functions:
1. Pin 1 (SHUTDOWN): This pin is used to place the amplifier into a low-power shutdown mode to save power when the amplifier is not in use.
2. Pin 2 (Bypass): This pin is connected to a capacitor to minimize turn-on pops and clicks. It also sets the internal bias voltage.
3. Pin 3 (Input+): The non-inverting input terminal of the amplifier.
4. Pin 4 (Input-): The inverting input terminal of the amplifier.
5. Pin 5 (VDD): This is the supply voltage pin. The LM4871M typically operates with a supply voltage ranging from 2V to 5.5V.
6. Pin 6 (VO+): Positive output to the load (speaker).
7. Pin 7 (GND): Ground connection.
8. Pin 8 (VO-): Negative output to the load (speaker).
These pins allow the LM4871M to function effectively as a bridge-tied load (BTL) amplifier, providing a differential output to the speaker for greater output power.
1. Pin 1 (SHUTDOWN): This pin is used to place the amplifier into a low-power shutdown mode to save power when the amplifier is not in use.
2. Pin 2 (Bypass): This pin is connected to a capacitor to minimize turn-on pops and clicks. It also sets the internal bias voltage.
3. Pin 3 (Input+): The non-inverting input terminal of the amplifier.
4. Pin 4 (Input-): The inverting input terminal of the amplifier.
5. Pin 5 (VDD): This is the supply voltage pin. The LM4871M typically operates with a supply voltage ranging from 2V to 5.5V.
6. Pin 6 (VO+): Positive output to the load (speaker).
7. Pin 7 (GND): Ground connection.
8. Pin 8 (VO-): Negative output to the load (speaker).
These pins allow the LM4871M to function effectively as a bridge-tied load (BTL) amplifier, providing a differential output to the speaker for greater output power.
Manufacturer
The LM4871M is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and manufactures a wide range of electronic components and integrated circuits. It is renowned for its analog chips and embedded processors, which are used in a variety of applications across industries such as automotive, industrial, personal electronics, communications, and enterprise systems. TI focuses on innovation and the development of high-performance products that enable advancements in technology and electronics.
Application
The LM4871M is an audio power amplifier commonly used in portable electronic devices. Its application areas include mobile phones, MP3 players, laptops, and personal digital assistants (PDAs), where it provides low distortion audio amplification. The chip is designed for driving small speakers or headphones, making it suitable for devices requiring compact and efficient audio output solutions. Additionally, its low power consumption and thermal shutdown protection make it ideal for battery-powered devices. The LM4871M's ability to deliver high-quality sound in a small package makes it a popular choice for consumer electronics that prioritize audio performance and energy efficiency.
Package
The LM4871M is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package. This package type is commonly used for surface mounting on printed circuit boards and is suitable for applications where space is a consideration.
