LM4673 免滤波、2.65W、单声道、D 类音频功率放大器

The LM4673 is a single supply, high efficiency, 2.65W, mono, Class D audio amplifier. A low noise, filterless PWM architecture eliminates the output filter, reducing external component count, board area consumption, system cost, and simplifying design.

The LM4673 is designed to meet the demands of mobile phones and other portable communication devices. Operating on a single 5V supply, it is capable of driving a 4Ω speaker load at a continuous average output of 2.1W with less than 1% THD+N. Its flexible power supply requirements allow operation from 2.4V to 5.5V.

The LM4673 has high efficiency with speaker loads compared to a typical Class AB amplifier. With a 3.6V supply driving an 8Ω speaker, the IC's efficiency for a 100mW power level is 80%, reaching 88% at 400mW output power

LM4673
Speaker Channels Mono    
Speaker Amp Type Class-D    
Output Power (W) 2.65    
PSRR (dB) 78    
Special Features Digital Input
Supply Min (Min) (Volt) 2.4    
Supply Max (Max) (Volt) 5.5
LM4673 特性
LM4673 器件用途
LM4673 应用技术支持与电子电路设计开发资源下载
  1. LM4673 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