The selection of audio power amplifier chips from ChipSourceTek should be determined based on specific application scenarios and performance requirements. The following are the main model features and selection suggestions:

CST8002A

• Type : differential input, AB/D class switchable amplifier with turn-off mode
• features:
• Supports off mode (off current <1μA), suitable for portable devices to reduce power consumption
  The input voltage range is 2.5-6V, and the output power is 4.1W when the load is 4Ω (powered by 6V)
  Distortion ≤10%, suitable for scenarios such as smart door locks and Bluetooth speakers
• 
  

CST8337

• type : High-power, FM interference-free, adaptive boost AB/D class power amplifier
• features :
• Output power reaches 15W under a 3Ω load (with 10% distortion)
  Supports dynamic boost technology, with a maximum efficiency of 91%
  No filter design required, suitable for high-efficiency battery-powered devices
• 
  

CST8102A

• type : AB/D class switchable power amplifier
  features :
• Output power of Class D mode: 6W (7V/4Ω)
  AB mode output 5.2W (5V/2Ω)
  Supports FM coexistence technology, suitable for scenarios such as security monitoring and smart home
• 
  

CST8302S

• type : mono class F power amplifier
  features :
  Output power 3.2W, efficiency 90%
  Differential input architecture, strong anti-RF noise capability
  Supports overcurrent protection, overheat protection and other protection mechanisms

Selection suggestion :
Portable devices (such as Bluetooth speakers) : give priority to CST8002A or CST8337, taking into account both power consumption and sound quality 12
Smart home/security : the FM coexistence feature of CST8102A is more applicable to 3
Ultra-low power consumption requirement : The CST8002A can achieve extremely low power standby in the off mode 1
High-efficiency battery-powered : the dynamic boost technology of CST8337 is more suitable for 2