LM4861 - Boomer Series: 1.1W Audio Amplifier with Shutdown Mode

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.

Products containing the "LM4861" keyword are: LM4861M , LM4861M , LM4861M-NOPB , LM4861M/NOPB , LM4861M/NOPB , LM4861M/NOPB , AP40N03H , LM4861MNOPB , LM4861MX , LM4861MX , LM4861MX , AP4300AM-BTRE , LM4861MX LM4861M LM4861 , LM4861MX/NOPB , LM4861MX/NOPB , LM4861MXNOPB

• 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 8Ω 1.0% (max)
• Output power at 10% THD+N at 1kHz into 8Ω 1.5 W (typ)
• Shutdown Current 0.6µA (typ)

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