TPA301 Datasheet, PDF (1/22 Pages) Texas Instruments – 350-mW MONO AUDIO POWER AMPLIFIER

TPA301
350-mW MONO AUDIO POWER AMPLIFIER
D Fully Specified for 3.3-V and 5-V Operation
D Wide Power Supply Compatibility
2.5 V – 5.5 V
D Output Power for R_L = 8 Ω
– 350 mW at V_DD = 5 V, BTL
– 250 mW at V_DD = 3.3 V, BTL
D Ultra-Low Quiescent Current in Shutdown
Mode . . . 0.15 µA
D Thermal and Short-Circuit Protection
D Surface-Mount Packaging
– SOIC
– PowerPAD™ MSOP
SLOS208C – JANUARY1998 – REVISED MARCH 2000
D OR DGN PACKAGE
(TOP VIEW)
SHUTDOWN 1
8
V_O–
BYPASS 2
7
GND
IN+ 3
6
V_DD
IN– 4
5
V_O+
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 communications. The BTL configuration eliminates the need for external coupling capacitors on the
output in most applications, which is particularly important for small battery-powered equipment. This device
features a shutdown mode for power-sensitive applications with a quiescent current of 0.15 µA during shutdown.
The TPA301 is available in an 8-pin SOIC surface-mount package and the surface-mount PowerPAD MSOP,
which reduces board space by 50% and height by 40%.
Audio
Input
RF
RI
CI
CB
0.1 µF
From System Control
4 ^{IN –}
3 IN+
2 BYPASS
VDD/2
–
+
–
+
1 SHUTDOWN
Bias
Control
VDD 6
VO+ 5
VDD
CS
1 µF
VO– 8
7
GND
350 mW
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright © 2000, Texas Instruments Incorporated
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