LM4853数据手册TI中文资料规格书

描述 Description

The LM4853 is an audio power amplifier capable of delivering 1.5W (typ) of continuous average power into a mono 4Ω bridged-tied load (BTL) with 1% THD+N or 95mW per channel of continuous average power into stereo 32Ω single-ended (SE) loads with 1% THD+N, using a 5V power supply. The LM4853 can automatically switch between mono BTL and stereo SE modes utilizing a headphone sense pin. It is ideal for any system that provides both a monaural speaker output and a stereo line or headphone outputBoomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. Since the LM4853 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems.The LM4853 features an externally controlled, micropower consumption shutdown mode and thermal shutdown protection. The unity-gain stable LM4853's gain is set by external gain-setting resistors

特性 Features

• Mono 1.5W BTL or Stereo 300mW Output
• Headphone Sense
• “Click and Pop” Suppression Circuitry
• No Bootstrap Capacitors Required
• Thermal Shutdown Protection
• Unity-Gain Stable
• Available in Space-Saving VSSOP and WSON Packaging
Key Specifications
• Output Power at 1% THD+N, 1kHz:
• LM4853LD 3Ω BTL 1.9W (typ)
• LM4853LD 4Ω BTL 1.7W (typ)
• LM4853MM 4Ω BTL 1.5W (typ)
• LM4853MM,LD 8Ω BTL 1.1W (typ)
• LM4853MM,LD 8Ω SE 300mW (typ)
• LM4853MM,LD 32Ω SE 95mW (typ)

• THD+N at 1kHz, 95mW into 32Ω SE 1% (typ)
• Single Supply Operation 2.4 to 5.5V
• Shutdown Current 18µA (typ)