AD52580－20W Stereo Class-D Audio Amplifier with Power Limit And Dynamic Temperature Control  DataSheet
AD52580 PCB Layout Guide 
I. General Description：
The AD52580 is a high efficiency stereo class-D audio amplifier with adjustable power limit function and dynamic
temperature control. The loudspeaker driver operates from 8~26V supply voltage and analog circuit operates at 3.3V
supply voltage. It can deliver 20W/CH output power into 8W loudspeaker within 0.09% THD+N and without external heat
sink when playing music.
II. Features：
Single supply voltage
8 ~ 26V for loudspeaker driver
Built-in LDO output 3.3V for others
Loudspeaker power from 24V supply
BTL Mode: 20W/CH into 8W @0.09% THD+N
PBTL Mode: 40W/CH into 4W @0.15% THD+N
Loudspeaker power from 13V supply
BTL Mode: 10W/CH into 8W @10% THD+N
87% efficient Class-D operation eliminates need for heat sink
Differential inputs
Four selectable, fixed gain settings
Internal oscillator
Short-Circuit protection with auto recovery option
Under-Voltage detection
Over-Voltage protection
Pop noise and click noise reduction
Adjustable power limit function for speaker protection
Output DC detection for speaker protection
Filter-Free operation
Over temperature protection with auto recovery
Dynamic temperature control prevents chip from over heating
III. Applications：
CD and DVD
TV audio
Car audio
Boom-box
MP3 docking systems
Powered speaker
Wireless audio
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