LM4780, LM4780TABD

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SNAS193B – JULY 2003 – REVISED APRIL 2013

LM4780 Overture™ Audio Power Amplifier Series Stereo 60W, Mono 120W Audio Power

Amplifier with Mute

Check for Samples: LM4780, LM4780TABD

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FEATURES

DESCRIPTION

The LM4780 is a stereo audio amplifier capable of

23

•

SPiKe Protection

typically delivering 60W per channel of continuous

•

Low External Component Count

average output power into an 8

Ω load with less than

•

Quiet Fade-In/Out Mute Mode

0.5% THD+N from 20Hz - 20kHz.

•

Wide Supply Range: 20V - 84V

The

LM4780

is

fully

protected

utilizing

Texas

•

Signal-to-Noise Ratio

Instruments' Self Peak Instantaneous Temperature

dynamically optimized Safe Operating Area (SOA).

APPLICATIONS

SPiKe

protection

completely

safeguards

the

•

Audio Amplifier for Component Stereo

LM4780's

outputs

against

over-voltage,

under-

•

Audio Amplifier for Compact Stereo

voltage, overloads, shorts to the supplies or GND,

thermal runaway and instantaneous temperature

•

Audio Amplifier for Self-Powered Speakers

peaks. The advanced protection features of the

•

Audio Amplifier for High-End and HD TVs

LM4780 places it in a class above discrete and hybrid

amplifiers.

KEY SPECIFICATIONS

Each amplifier of the LM4780 has an independent

•

Output Power/Channel with 0.5% THD+N, 1kHz

smooth transition fade-in/out mute.

into 8

Ω: 60 W (Typ)

The LM4780 can easily be configured for bridge or

•

THD+N at 2 x 30W into 8

Ω (20Hz - 20kHz):

parallel operation for 120W mono solutions.

0.03% (Typ)

•

THD+N at 2 x 30W into 6

Ω (20Hz - 20kHz):

0.05% (Typ)

•

THD+N at 2 x 30W into 4

Ω (20Hz - 20kHz):

0.07% (Typ)

•

Mute Attenuation: 110 dB (Typ)

•

PSRR: 85 dB (Min)

•

Slew Rate: 19V/µs (Typ)

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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.

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Overture is a trademark of Texas Instruments.

3

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2003–2013, 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.