Texas Instruments LM4871M/NOPB 3W Audio Power Amplifier IC, SOIC-8
Texas Instruments 3W mono audio amplifier IC for portable devices. Low power shutdown, 2-5.5V supply, SOIC-8 package. No coupling caps needed.
The Texas Instruments LM4871M/NOPB is a high-performance mono bridged audio power amplifier integrated circuit, designed to deliver clear, powerful sound in a compact and efficient package. Capable of outputting 3W of continuous average power into a 3Ω load with less than 10% THD+N from a 5V supply, this IC is engineered for applications where audio quality and power efficiency are paramount.
A standout feature for battery-powered and portable devices is its micropower shutdown mode. When activated, the typical quiescent current drops to a mere 0.6µA, dramatically extending battery life. The amplifier operates from a low supply voltage range of 2.0V to 5.5V, making it highly versatile for various portable and low-voltage systems.
The Boomer amplifier design is specifically created for high-fidelity audio output while requiring minimal external components. A significant design advantage is that it eliminates the need for bulky and costly output coupling capacitors, bootstrap capacitors, and snubber networks. This not only saves on board space and component cost but also reduces the overall volume and weight of the final product, which is crucial for modern portable electronics.
Key Features & Protections
- Unity Gain Stable: Ensures stable operation without oscillation at a gain of one.
- External Gain Configuration: Offers design flexibility by allowing the gain to be set with external resistors.
- Pin Compatibility: Directly pin-compatible with the LM4861, simplifying upgrades or design changes.
- Thermal Shutdown Protection: Safeguards the IC from damage due to overheating.
- Green Product: Manufactured with no antimony or bromine (No Sb/Br), adhering to environmental standards.
This surface-mount amplifier comes in a compact SOIC-8 package, ideal for space-constrained applications. It is a robust and reliable **'
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