LM4991 具有停机模式的 3 W 音频功率放大器

The LM4991 is a mono bridged audio power amplifier capable of delivering 3W of continuous average power into a 3 load with less than 10% THD when powered by a 5V power supply . To conserve power in portable applications, the LM4991's micropower shutdown mode (ISD = 0.1µA, typ) is activated when VDD is applied to the SHUTDOWN pin.

Boomer audio power amplifiers are designed specifically to provide high power, high fidelity audio output. They require few external components and operate on low supply voltages from 2.2V to 5.5V. Since the LM4991 does not require output coupling capacitors, bootstrap capacitors, or snubber networks, it is ideally suited for low-power portable systems that require minimum volume and weight.

LM4991
Speaker Channels Mono    
Speaker Amp Type Class-AB    
Output Power (W) 2.5    
PSRR (dB) 64    
Supply Min (Min) (Volt) 2.2    
Supply Max (Max) (Volt) 5.5
LM4991 特性
LM4991 器件用途
LM4991 应用技术支持与电子电路设计开发资源下载
  1. LM4991 数据资料 dataSheet 下载.PDF
  2. TI 德州仪器扬声器放大器和调制器产品选型与价格 . xls