The MAX9708 mono/stereo, Class D audio power amplifier delivers up to 2 x 21W into an 8Ω stereo mode and 1 x 42W into a 4Ω load in mono mode while offering up to 87?ficiency. The MAX9708 provides Class AB amplifier performance with the benefits of Class D efficiency, eliminating the need for a bulky heatsink and conserving power. The MAX9708 operates from a single +10V to +18V supply, driving the load in a BTL configuration.

The MAX9708 offers two modulation schemes: a fixedfrequency modulation (FFM) mode, and a spread-spectrum modulation (SSM) mode that reduces EMI-radiated emissions. The MAX9708 can be synchronized to an external clock from 600kHz to 1.2MHz. A synchronized output allows multiple units to be cascaded in the system.

Features:

• 2 x 21W Output Power in Stereo Mode (8Ω, THD = 10%) 
• 1 x 42W Output Power in Mono Mode (4Ω, THD = 10%) 
• High Efficiency: Up to 87% 
• Filterless Class D Amplifier 
• Unique Spread-Spectrum Mode 
• Programmable Gain (+22dB, +25dB, +29.5dB, +36dB) 
• High PSRR (90dB at 1kHz) 
• Differential Inputs Suppress Common-Mode Noise 
• Shutdown and Mute Control 
• Integrated Click-and-Pop Suppression 
• Low 0.1% THD+N 
• Current Limit and Thermal Protection 
• Programmable Thermal Flag 
• SYNC Input/Output 
• Available in Thermally Efficient, Space-Saving 56-Pin TQFN Package

Package: TQFN

Link to datasheet:: https://www.mouser.com/datasheet/2/256/MAX9708-1292336.pdf