LM4853MM National Semiconductor, LM4853MM Datasheet

LM4853MM

Manufacturer Part Number

LM4853MM

Description

IC,Audio Amplifier,SINGLE,TSSOP,10PIN,PLASTIC

Manufacturer

National Semiconductor

Datasheets

1.LM4853LDX.pdf (17 pages)

2.LM4853MM.pdf (17 pages)

Specifications of LM4853MM

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

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LM4853

Mono 1.5 W / Stereo 300mW Power Amplifier

General Description

The LM4853 is an audio power amplifier capable of deliver-

ing 1.5W (typ) of continuous average power into a mono 4Ω

bridged-tied load (BTL) with 1% THD+N or 95mW per chan-

nel of continuous average power into stereo 32Ω single-

ended (SE) loads with 1% THD+N, using a 5V power supply.

The LM4853 can automatically switch between mono BTL

and stereo SE modes utilizing a headphone sense pin. It is

ideal for any system that provides both a monaural speaker

output and a stereo line or headphone output

Boomer audio power amplifiers were designed specifically to

provide high quality output power with a minimal amount of

external components. Since the LM4853 does not require

bootstrap capacitors or snubber networks, it is optimally

suited for low-power portable systems.

The LM4853 features an externally controlled, micropower

consumption shutdown mode and thermal shutdown protec-

tion. The unity-gain stable LM4853’s gain is set by external

gain-setting resistors

Connection Diagrams

Boomer

is a registered trademark of National Semiconductor Corporation.

See NS Package Number MUB10A

Order Number LM4853MM

10 Lead MSOP

Top View

DS200334

20033429

Key Specifications

n Output Power at 1% THD+N, 1kHz:

n THD+N at 1kHz, 95mW into 32Ω SE

n Single Supply Operation

n Shutdown Current

Features

n Mono 1.5W BTL or stereo 300mW output

n Headphone sense

n “Click and pop” suppression circuitry

n No bootstrap capacitors required

n Thermal shutdown protection

n Unity-gain stable

n Available in space-saving MSOP and LLP packaging

Applications

n Portable computers

n Desktop computers

n PDA’s

n Handheld games

LM4853LD 3Ω BTL

LM4853LD 4Ω BTL

LM4853MM 4Ω BTL

LM4853MM,LD 8Ω BTL

LM4853MM,LD 8Ω SE

LM4853MM,LD 32Ω SE

See NS Package Number LDA14A

Order Number LM4853LD

14 Lead LLP

Top View

January 2003

www.national.com

20033428

300mW (typ)

95mW (typ)

2.4 to 5.5V

1.9W (typ)

1.7W (typ)

1.5W (typ)

1.1W (typ)

18µA (typ)

1% (typ)

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