LM4860

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SNAS096C – AUGUST 1994 – REVISED MAY 2013

LM4860

Series 1W Audio Power Amplifier with Shutdown

Mode

Check for Samples: LM4860

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FEATURES

DESCRIPTION

The LM4860 is a bridge-connected audio power

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•

No Output Coupling Capacitors, Bootstrap

amplifier capable of delivering 1W of continuous

Capacitors, or Snubber Circuits are Necessary

average power to an 8

Ω load with less than 1%

•

Small Outline (SO) Packaging

THD+N over the audio spectrum from a 5V power

•

Compatible with PC Power Supplies

supply.

•

Thermal Shutdown Protection Circuitry

Boomer

audio

power

amplifiers

were

designed

specifically to provide high quality output power with a

•

Unity-Gain Stable

minimal

amount

of

external

components

using

•

External Gain Configuration Capability

surface mount packaging. Since the LM4860 does

•

Two Headphone Control Inputs and

not require output coupling capacitors, bootstrap

Headphone Sensing Output

capacitors or snubber networks, it is optimally suited

for low-power portable systems.

APPLICATIONS

The LM4860 features an externally controlled, low-

•

Personal Computers

power consumption shutdown mode, as well as an

internal thermal shutdown protection mechanism. It

•

Portable Consumer Products

also includes two headphone control inputs and a

•

Cellular Phones

headphone sense output for external monitoring.

•

Self-Powered Speakers

The unity-gain stable LM4860 can be configured by

•

Toys and Games

external gain setting resistors for differential gains of

up to 10 without the use of external compensation

KEY SPECIFICATIONS

components. Higher gains may be achieved with

suitable compensation.

•

THD+N at 1W Continuous Average

•

Output Power into 8

Ω: 1% (Max)

•

Instantaneous Peak Output Power:

> 2 W

•

Shutdown Current:

0.6

μA (typ)

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PRODUCTION DATA information is current as of publication date.

Copyright © 1994–2013, 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.