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IS31AP2110 Datasheet, PDF (1/16 Pages) Integrated Silicon Solution, Inc – 20W STEREO CLASS-D AUDIO AMPLIFIER WITH POWER LIMIT | |||
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IS31AP2110
20W STEREO CLASS-D AUDIO AMPLIFIER WITH POWER LIMIT
AND DYNAMIC TEMPERATURE CONTROL
September 2014
GENERAL DESCRIPTION
The IS31AP2110 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 8ï loudspeaker within 0.2% THD+N
and without external heat sink when playing music.
IS31AP2110 provides parallel BTL (Mono) application,
and it can deliver 40W into 4ï loudspeaker within
0.11% 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.
The IS31AP2110 is available in a thermally enhanced
eTSSOP-28 package.
FEATURES
ï· Single supply voltage
- 8V ~ 26V for loudspeaker driver
- Built-in LDO output 3.3V for others
ï· Loudspeaker power from 24V supply
- BTL Mode: 20W/CH into 8⦠@0.2% THD+N
- PBTL Mode: 40W/CH into 4⦠@0.11% THD+N
ï· Loudspeaker power from 13V supply
- BTL Mode: 10W/CH into 8⦠@10% THD+N
ï· 87% efficient Class-D operation eliminates need
for heat sink
ï· Differential inputs
ï· Four selectable, fixed gain settings
ï· Internal oscillator
ï· Short-Circuit protection with auto recovery option
ï· Under-voltage detection
ï· Over-voltage protection
ï· Pop noise and click noise reduction
ï· Adjustable power limit function for speaker
protection
ï· Output DC detection for speaker protection
ï· Filter-Free operation
ï· Over temperature protection with auto recovery
ï· Dynamic temperature control prevents chip from
over heating
APPLICATIONS
ï· TV audio
ï· Bluetooth speaker system
ï· Docking speaker system
ï· Consumer audio equipment
Integrated Silicon Solution, Inc. â www.issi.com
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Rev. A, 09/01/2014
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