LM4861

Boomer 系列：具有关断模式的 1.1W 音频放大器

The is a bridge-connected audio power amplifier capable of delivering 1.1W of continuous average power to an 8Ω load with 1% THD+N using a 5V power supply.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components using surface mount packaging. Since the LM4861 does not require output coupling capacitors, bootstrap capacitors, or snubber networks, it is optimally suited for low-power portable systems.

The LM4861 features an externally controlled, low-power consumption shutdown mode, as well as an internal thermal shutdown protection mechanism.

The unity-gain stable LM4861 can be configured by external gain-setting resistors for differential gains of up to 10 without the use of external compensation components. Higher gains may be achieved with suitable compensation.

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No output coupling capacitors, bootstrap capacitors, or snubber circuits are necessary

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Small Outline SOIC packaging

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Compatible with PC power supplies

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Thermal shutdown protection circuitry

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Unity-gain stable

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External gain configuration capability

## Key Specifications

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THD+N for 1kHz at 1W continuous average output power into 8Ω 1.0% max

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Output power at 10% THD+N at 1kHz into 8Ω 1.5 W typ

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Shutdown Current 0.6µA typ

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