描述 Description

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.

特性 Features

? 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)