LM4839MTE National Semiconductor, LM4839MTE Datasheet

LM4839MTE

Manufacturer Part Number

LM4839MTE

Description

Manufacturer

National Semiconductor

Datasheet

1.LM4839MTX.pdf (34 pages)

Specifications of LM4839MTE

Case

TSSOP-28

Date_code

2003+

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LM4839

Stereo 2W Audio Power Amplifiers

with DC Volume Control, Bass Boost, and Input Mux

General Description

The LM4839 is a monolithic integrated circuit that provides

DC volume control, and stereo bridged audio power amplifi-

ers capable of producing 2W into 4

1.0% THD+N, or 2.2W into 3

THD+N.

Boomer

to provide high quality audio while requiring a minimum

amount of external components. The LM4839 incorporates a

DC volume control, stereo bridged audio power amplifiers,

selectable gain or bass boost, and an input mux making it

optimally suited for multimedia monitors, portable radios,

desktop, and portable computer applications.

The LM4839 features an externally controlled, low-power

consumption shutdown mode, and both a power amplifier

and headphone mute for maximum system flexibility and

performance.

Note 1: When properly mounted to the circuit board, the LM4839LQ and

LM4839MTE will deliver 2W into 4 . The LM4839MT will deliver 1.1W into

8 . See the Application Information section for LM4839LQ and LM4839MTE

usage information.

Note 2: An LM4839LQ and LM4839MTE that have been properly mounted

to the circuit board and forced-air cooled will deliver 2.2W into 3 .

Connection Diagrams

Boomer

is a registered trademark of NationalSemiconductor Corporation.

audio integrated circuits were designed specifically

(Note 2) with less than 1.0%

See NS Package Number LQA028AA for Exposed-DAP LLP

(Note 1) with less than

DS200134

Order Number LM4839LQ

LLP Package

Top View

Key Specifications

n P

n Single-ended mode - THD+N at 85mW into

n Shutdown current

Features

n DC Volume Control Interface

n Input mux

n System Beep Detect

n Stereo switchable bridged/single-ended power amplifiers

n Selectable internal/external gain and bass boost

n “Click and pop” suppression circuitry

n Thermal shutdown protection circuitry

Applications

n Portable and Desktop Computers

n Multimedia Monitors

n Portable Radios, PDAs, and Portable TVs

into 3

into 4

into 8

at 1% THD+N

(LQ & MTE)

(LM4839) (MT, MTE, & LQ)

DS200134-83

www.national.com

0.2µA(typ)

April 2002

2.2W(typ)

2.0W(typ)

1.1W(typ)

1.0%(typ)

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