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LM4871MM
+BOMIC AMP CLASS AB MONO 3W 8VSSOP
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Nhà sản xuấtTexas Dụng cụ
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Ông. Phần #LM4871MM
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Bảng dữ liệu LM4871MM DataSheet
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| thuộc tính | Giá trị |
| Series | Boomer® |
| Part Status | Obsolete |
| Type | Class AB |
| Output Type | 1-Channel (Mono) |
| Max Output Power x Channels @ Load | 3W x 1 @ 3Ohm |
| Voltage - Supply | 2V ~ 5.5V |
| Features | Shutdown, Thermal Protection |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Supplier Device Package | 8-VSSOP |
| Package / Case | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) |
| Base Product Number | LM4871 |
Tổng quan
Description
The LM4871MM is a high-efficiency audio power amplifier designed for portable devices. It provides a bridge-tied load (BTL) configuration, delivering up to 1 Watt of output power into a 4-ohm load at 5V supply voltage, making it ideal for driving speakers in mobile applications.
Key features include low total harmonic distortion (THD), low noise, and a wide power supply voltage range (2.5V to 5.5V). It also includes thermal shutdown and short-circuit protection, enhancing reliability in various operating conditions.
The amplifier is designed to be simple to implement, with minimal external components required. Its small package size (often available in a surface-mount format) allows for efficient use of PCB space, which is crucial in compact electronic designs.
The LM4871MM is suitable for applications such as portable speakers, TVs, and other audio systems that require robust performance in a small footprint.
Key features include low total harmonic distortion (THD), low noise, and a wide power supply voltage range (2.5V to 5.5V). It also includes thermal shutdown and short-circuit protection, enhancing reliability in various operating conditions.
The amplifier is designed to be simple to implement, with minimal external components required. Its small package size (often available in a surface-mount format) allows for efficient use of PCB space, which is crucial in compact electronic designs.
The LM4871MM is suitable for applications such as portable speakers, TVs, and other audio systems that require robust performance in a small footprint.
Equivalent
The LM4871MM is a low-voltage audio power amplifier. Equivalent products include the following chips:
1. LM486 - Similar low-voltage audio amplifier.
2. TPA2005D1 - Class-D audio amplifier with low power consumption.
3. MAX9744 - Low voltage, mono audio amplifier.
4. TDA7052 - Low-power audio amplifier for portable applications.
Always check specific datasheets for pin compatibility and performance characteristics before substituting.
1. LM486 - Similar low-voltage audio amplifier.
2. TPA2005D1 - Class-D audio amplifier with low power consumption.
3. MAX9744 - Low voltage, mono audio amplifier.
4. TDA7052 - Low-power audio amplifier for portable applications.
Always check specific datasheets for pin compatibility and performance characteristics before substituting.
Features
The LM4871MM is a dual audio power amplifier designed for portable audio applications. Key features include:
1. Dual Channel Output: It can drive two audio channels, making it suitable for stereo applications.
2. High Output Power: Delivers up to 1W per channel at 10% THD into an 8Ω load, providing sufficient power for small speakers.
3. Low Distortion: Offers low total harmonic distortion (THD) for clear sound quality.
4. Built-in Thermal and Short Circuit Protection: Ensures reliability by preventing damage under fault conditions.
5. Low Supply Current: Efficient operation allows for battery-powered applications, extending usage time.
6. Single Supply Operation: Operates from a single voltage supply, simplifying circuit design.
7. Gain Configuration: Adjustable gain settings for versatile application needs.
8. Compact Package: Available in a surface-mount package, facilitating integration into space-constrained designs.
Overall, the LM4871MM is ideal for portable, battery-operated audio applications due to its efficiency and performance.
1. Dual Channel Output: It can drive two audio channels, making it suitable for stereo applications.
2. High Output Power: Delivers up to 1W per channel at 10% THD into an 8Ω load, providing sufficient power for small speakers.
3. Low Distortion: Offers low total harmonic distortion (THD) for clear sound quality.
4. Built-in Thermal and Short Circuit Protection: Ensures reliability by preventing damage under fault conditions.
5. Low Supply Current: Efficient operation allows for battery-powered applications, extending usage time.
6. Single Supply Operation: Operates from a single voltage supply, simplifying circuit design.
7. Gain Configuration: Adjustable gain settings for versatile application needs.
8. Compact Package: Available in a surface-mount package, facilitating integration into space-constrained designs.
Overall, the LM4871MM is ideal for portable, battery-operated audio applications due to its efficiency and performance.
Pinout
The LM4871MM is a low-power audio amplifier typically used in portable devices. It comes in a 8-pin MSOP (Mini Small Outline Package) configuration.
Pin Count and Functions:
1. VDD (Pin 1): Power supply input.
2. GND (Pin 2): Ground reference.
3. IN+ (Pin 3): Non-inverting audio input.
4. IN- (Pin 4): Inverting audio input.
5. OUT (Pin 5): Output to speaker or load.
6. VREF (Pin 6): Reference voltage for improving performance.
7. SHDN (Pin 7): Shutdown control; high to enable, low to disable.
8. COMP (Pin 8): Compensation pin to stabilize the amplifier.
This layout supports efficient audio amplification while providing functionalities like shutdown mode for power saving.
Pin Count and Functions:
1. VDD (Pin 1): Power supply input.
2. GND (Pin 2): Ground reference.
3. IN+ (Pin 3): Non-inverting audio input.
4. IN- (Pin 4): Inverting audio input.
5. OUT (Pin 5): Output to speaker or load.
6. VREF (Pin 6): Reference voltage for improving performance.
7. SHDN (Pin 7): Shutdown control; high to enable, low to disable.
8. COMP (Pin 8): Compensation pin to stabilize the amplifier.
This layout supports efficient audio amplification while providing functionalities like shutdown mode for power saving.
Manufacturer
The LM4871MM is manufactured by Texas Instruments (TI), a well-known American technology company. Founded in 1930, Texas Instruments specializes in designing and manufacturing semiconductors and various integrated circuits, which are crucial components in electronic devices. The company is recognized for its innovation in the fields of analog and digital technology, particularly in areas such as signal processing, embedded processing, and power management.
Texas Instruments serves a diverse range of markets, including automotive, industrial, communication, and consumer electronics. The LM4871MM itself is a low-voltage audio power amplifier, designed for driving speakers in portable and battery-operated devices, making it suitable for applications in mobile phones, tablets, and other consumer electronics.
With a strong emphasis on research and development, Texas Instruments is a leader in the semiconductor industry, committed to delivering high-performance solutions that meet the evolving needs of modern technology.
Texas Instruments serves a diverse range of markets, including automotive, industrial, communication, and consumer electronics. The LM4871MM itself is a low-voltage audio power amplifier, designed for driving speakers in portable and battery-operated devices, making it suitable for applications in mobile phones, tablets, and other consumer electronics.
With a strong emphasis on research and development, Texas Instruments is a leader in the semiconductor industry, committed to delivering high-performance solutions that meet the evolving needs of modern technology.
Application
The LM4871MM is a low-voltage audio power amplifier widely used in portable and battery-powered devices. Its primary application areas include:
1. Portable Speakers: Enhancing sound quality in compact audio systems.
2. TV and Monitor Speakers: Providing sufficient audio output for televisions and computer monitors.
3. Laptops and Tablets: Improving audio performance in portable computing devices.
4. Cell Phones: Enhancing call and media playback quality.
5. Consumer Electronics: Used in various devices like radios and alarm clocks for better sound output.
Its efficiency and compact size make it ideal for applications requiring low power consumption and high performance.
1. Portable Speakers: Enhancing sound quality in compact audio systems.
2. TV and Monitor Speakers: Providing sufficient audio output for televisions and computer monitors.
3. Laptops and Tablets: Improving audio performance in portable computing devices.
4. Cell Phones: Enhancing call and media playback quality.
5. Consumer Electronics: Used in various devices like radios and alarm clocks for better sound output.
Its efficiency and compact size make it ideal for applications requiring low power consumption and high performance.
Package
The LM4871MM is packaged in an 8-lead MSOP (Mini Small Outline Package). This compact surface mount package is designed for space-constrained applications while providing efficient thermal performance.
