TPA3120D2
www.ti.com SLOS507E – MARCH 2007 – REVISED SEPTEMBER 2007 25-W STEREO CLASS-D AUDIO POWER AMPLIFIER
FEATURES 1 2 DESCRIPTION 25-W/ch into a 4-Ω Load from a 27-V Supply
20-W/ch into a 4-Ω Load from a 24-V Supply
Operates from 10 V to 30 V
Efficient Class-D Operation Eliminates Need
for Heat Sinks
Four Selectable, Fixed-Gain Settings
Internal Oscillator (No External Components
Required)
Single-Ended Analog Inputs
Thermal and Short-Circuit Protection With
Auto Recovery
Space-Saving Surface-Mount 24-Pin TSSOP
Package The TPA3120D2 is a 25-W (per channel) efficient,
Class-D audio power amplifier for driving stereo
speakers in a single-ended configuration or a mono
bridge-tied speaker. The TPA3120D2 can drive
stereo speakers as low as 4 Ω. The efficiency of the
TPA3120D2 eliminates the need for an external heat
sink when playing music.
The gain of the amplifier is controlled by two gain
select pins. The gain selections are 20, 26, 32, …
