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TPA721
www.ti.com
SLOS231E – NOVEMBER 1998 – REVISED JUNE 2004
700-mW MONO LOW-VOLTAGE AUDIO POWER AMPLIFIER
FEATURES
• 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
– 700 mW at VDD = 5 V, BTL – 250 mW at VDD = 3.3 V, BTL • Integrated Depop Circuitry • Thermal and Short-Circuit Protection • Surface-Mount Packaging – SOIC
– PowerPAD™ MSOP
D OR DGN PACKAGE (TOP VIEW)
SHUTDOWN 1
8
VO–
BYPASS 2
7
GND
IN+ 3
6
VDD
IN– 4
5
VO+
DESCRIPTION
The TPA721 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 TPA721 can deliver 250-mW of continuous power into a BTL 8-Ω load at less than 0.