LM4876

www.ti.com

SNAS054E – FEBRUARY 2000 – REVISED MAY 2013

LM4876

1.1W Audio Power Amplifier with Logic Low

Shutdown

Check for Samples: LM4876

1

FEATURES

DESCRIPTION

The LM4876 is a single 5V supply bridge-connected

2

•

Does Not Require Output Coupling Capacitors,

audio power amplifier capable of delivering 1.1W (typ)

Bootstrap Capacitors, Or Snubber Circuits

of continuous average power to an 8

Ω load with 0.5%

•

10-pin VSSOP and 8-pin SOIC Packages

THD+N.

•

Unity-Gain Stable

Like other audio amplifiers in the Boomer series, the

•

External Gain Set

LM4876 is designed specifically to provide high

quality output power with a minimal amount of

APPLICATIONS

external components. The LM4876 does not require

output coupling capacitors, bootstrap capacitors, or

•

Mobile Phones

snubber networks. It is perfectly suited for low-power

•

Portable Computers

portable systems.

•

Desktop Computers

The LM4876 features an active low externally

•

Low-Voltage Audio Systems

controlled, micro-power shutdown mode. Additionally,

the LM4876 features an internal thermal shutdown

KEY SPECIFICATIONS

protection mechanism. For PCB space efficiency, the

LM4876 is available in VSSOP and SOIC surface

•

THD+N at 1kHz for 1W Continuous Average

mount packages.

Output Power into 8

Ω 0.5% (max)

The unity-gain stable LM4876's closed loop gain is

•

Output Power At 1kHz Into 8

Ω with 10%

set using external resistors.

THD+N 1.5 W (typ)

•

Shutdown Current 0.01µA (typ)

•

Supply Voltage Range 2.0V to 5.5 V

Typical Application

Figure 1. Typical LM4876 Audio Amplifier Application Circuit

Numbers in ( ) are specific to the 10-pin VSSOP package.

1

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.

2

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2000–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.