TPA301
www.ti.com SLOS208E – JANUARY 1998 – REVISED JUNE 2004 350-mW MONO AUDIO POWER AMPLIFIER
FEATURES D OR DGN PACKAGE
(TOP VIEW) Fully Specified for 3.3-V and 5-V Operation
Wide Power Supply Compatibility 2.5 V -5.5 V
Output Power for RL = 8 Ω
– 350 mW at VDD = 5 V, BTL
– 250 mW at VDD = 3.3 V, BTL
Ultra-Low Quiescent Current in Shutdown
Mode . 0.15 ВµA
Thermal and Short-Circuit Protection
Surface-Mount Packaging
– SOIC
– PowerPAD™ MSOP SHUTDOWN
BYPASS
IN+
IN-1 8 2 7 3 6 4 5 VOGND
VDD
VO+ DESCRIPTION
The TPA301 is a bridge-tied load (BTL) audio power amplifier developed especially for low-voltage applications
where internal speakers are required. Operating with a 3.3-V supply, the TPA301 can deliver 250-mW of
continuous power into a BTL 8-Ω load at less than 1% THD+N throughout voice band frequencies. Although this
device is characterized out to 20 kHz, its operation was optimized for narrower band applications such as cellular …
