器件名称: LM4902
功能描述: 265mW at 3.3V Supply Audio Power Amplifier with Shutdown Mode
文件大小: 772.39KB 共18页
简 介:LM4902 265mW at 3.3V Supply Audio Power Amplifier with Shutdown Mode
February 2002
LM4902 265mW at 3.3V Supply Audio Power Amplifier with Shutdown Mode
General Description
The LM4902 is a bridged audio power amplifier capable of delivering 265mW of continuous average power into an 8 load with 1% THD+N from a 3.3V 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 LM4902 does not require output coupling capacitors, bootstrap capacitors or snubber networks, it is optimally suited for low-power portable applications. The LM4902 features an externally controlled, low power consumption shutdown mode, and thermal shutdown protection. The closed loop response of the unity-gain stable LM4902 can be configured by external gain-setting resistors.
j THD+N at 1kHz for 675mW continuous
average output power into 8, VDD = 5V
j Shutdown current
1.0% (max) 0.1A (typ)
Features
n MSOP and LLP packaging n No output coupling capacitors, bootstrap capacitors, or snubber circuits are necessary n Thermal shutdown protection circuitry n Unity-gain stable n External gain configuration capability n Latest generation ’click and pop’ suppression circuitry
Key Specifications
j THD+N at 1kHz for 265mW continuous
Applications
n Cellular phones n PDA’s n Any portable audio application 1.0% (max)
average output power into 8, VDD = 3.3V
Typical Applicat……
