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AD52580B Schematic ( PDF Datasheet ) - Elite Semiconductor

Teilenummer AD52580B
Beschreibung 20W Stereo Class-D Audio Amplifier
Hersteller Elite Semiconductor
Logo Elite Semiconductor Logo 




Gesamt 3 Seiten
AD52580B Datasheet, Funktion
ESMT
AD52580B
20W Stereo Class-D Audio Amplifier with Power Limit
And Dynamic Temperature Control
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 8@0.09% THD+N
PBTL Mode: 40W/CH into 4@0.15% THD+N
Loudspeaker power from 13V supply
BTL Mode: 10W/CH into 8@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
Applications
TV audio
Boom-Box
Powered speaker
Consumer Audio Equipment
Description
The AD52580B 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 8loudspeaker
within 0.09% THD+N and without external heat sink
when playing music.
AD52580B provides parallel BTL (Mono)
application, and it can deliver 40W into 4
loudspeaker within 0.15% THD+N. The adjustable
power limit function allows user to set a voltage rail
lower than half of 3.3V to limit the amount of current
through the speaker.
Output DC detection prevents speaker damage
from long-time current stress. The dynamic
temperature control is a gain control system. As chip
junction temperature higher than a warning level,
the gain level will decrease until junction
temperature lower than the warning level.
The output short circuit and over temperature
protection include auto-recovery feature.
Simplified Application Circuit
AD52580B
1uF
LINP
1uF
LINN
1uF
RINP
OUTPL
1uF
RINN
OUTNL
GAIN0
GAIN1
AVSS
1uF
AVDD
PBTL
PLIMIT
SD
FAULT
OUTPR
OUTNR
PVCCL
PVCCR
PGND
Ferrite
Bead
Ferrite
Bead
8V to 26V
Elite Semiconductor Memory Technology Inc.
Publication Date: Dec. 2013
Revision: 1.0
1/23





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