LM4876MX Datasheet, PDF (1/19 Pages) Texas Instruments – LM4876 1.1W Audio Power Amplifier with Logic Low

LM4876
www.ti.com
SNAS054E – FEBRUARY 2000 – REVISED MAY 2013
LM4876
1.1W Audio Power Amplifier with Logic Low
Shutdown
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FEATURES
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•2 Does Not Require Output Coupling Capacitors,
Bootstrap Capacitors, Or Snubber Circuits
• 10-pin VSSOP and 8-pin SOIC Packages
• Unity-Gain Stable
• External Gain Set
APPLICATIONS
• Mobile Phones
• Portable Computers
• Desktop Computers
• Low-Voltage Audio Systems
KEY SPECIFICATIONS
• THD+N at 1kHz for 1W Continuous Average
Output Power into 8Ω 0.5% (max)
• Output Power At 1kHz Into 8Ω with 10%
THD+N 1.5 W (typ)
• Shutdown Current 0.01µA (typ)
• Supply Voltage Range 2.0V to 5.5 V
DESCRIPTION
The LM4876 is a single 5V supply bridge-connected
audio power amplifier capable of delivering 1.1W (typ)
of continuous average power to an 8Ω load with 0.5%
THD+N.
Like other audio amplifiers in the Boomer series, the
LM4876 is designed specifically to provide high
quality output power with a minimal amount of
external components. The LM4876 does not require
output coupling capacitors, bootstrap capacitors, or
snubber networks. It is perfectly suited for low-power
portable systems.
The LM4876 features an active low externally
controlled, micro-power shutdown mode. Additionally,
the LM4876 features an internal thermal shutdown
protection mechanism. For PCB space efficiency, the
LM4876 is available in VSSOP and SOIC surface
mount packages.
The unity-gain stable LM4876's closed loop gain is
set using external resistors.
Typical Application
Figure 1. Typical LM4876 Audio Amplifier Application Circuit
Numbers in ( ) are specific to the 10-pin VSSOP package.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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