LM4861是TI公司的一款扬声器放大器（AB类/D类）产品，LM4861是Boomer 系列：具有关断模式的 1.1W 音频放大器，本页介绍了LM4861的产品说明、应用、特性等，并给出了与LM4861相关的TI元器件型号供参考。
LM4861 - Boomer 系列：具有关断模式的 1.1W 音频放大器 - 扬声器放大器（AB类/D类） - 低功耗放大器 - TI公司（Texas Instruments，德州仪器）
The LM4861 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.
- No output coupling capacitors, bootstrap capacitors, or snubber circuits are necessary
- Small Outline (SOIC) packaging
- Compatible with PC power supplies
- Thermal shutdown protection circuitry
- Unity-gain stable
- External gain configuration capability
Key Specifications
- THD+N for 1kHz at 1W continuous average output power into 8? 1.0% (max)
- Output power at 10% THD+N at 1kHz into 8? 1.5 W (typ)
- Shutdown Current 0.6µA (typ)
