描述 Description

The LM4864 is a bridged audio power amplifier capable of delivering 725mW of continuous average power into an 8Ω load with 1% THD+N from a 5V power supply. Boomer audio power amplifiers were designed specifically to provide high quality output power from a low supply voltage while requiring a minimal amount of external components. Since the LM4864 does not require output coupling capacitors, bootstrap capacitors or snubber networks, it is optimally suited for low-power portable applications. The LM4864 features an externally controlled, low power consumption shutdown mode, and thermal shutdown protection. The closed loop response of the unity-gain stable LM4864 can be configured by external gain-setting resistors. The device is available in multiple package types to suit various applications.

特性 Features

? VSSOP, SOIC, PDIP, and WSON Packaging
? No Output Coupling Capacitors, Bootstrap Capacitors, or Snubber Circuits are Necessary
? Thermal Shutdown Protection Circuitry
? Unity-Gain Stable
? External Gain Configuration Capability
Key Specifications
? PO at 1% THD+N with VDD = 5V, 1kHz
? LM4864LD, 4? load 625 mW (typ)
? LM4864LD, 8? load 725 mW (typ)
? LM4864M & LM4864N, 8? load 675 mW (typ)
? LM4864MM, 8? load 300 mW (typ)
? LM4864, 16? load 550 mW (typ)
? Shutdown current 0.7 μA (typ)