LM4950

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SNAS174E – JULY 2003 – REVISED MAY 2013

LM4950 Boomer ™ Audio Power Amplifier Series 7.5W Mono-BTL or 3.1W Stereo Audio

Power Amplifier

Check for Samples: LM4950

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FEATURES

DESCRIPTION

The LM4950 is a dual audio power amplifier primarily

23

•

Pop & Click Circuitry Eliminates Noise During

designed for demanding applications in flat panel

Turn-On and Turn-Off Transitions

monitors and TV's. It is capable of delivering 3.1

•

Low Current, Active-Low Shutdown Mode

watts per channel to a 4

Ω single-ended load with less

•

Low Quiescent Current

than 1% THD+N or 7.5 watts mono BTL to an 8

Ω

load, with less than 10% THD+N from a 12VDC power

•

Stereo 3.1W Output, RL = 4Ω

supply.

•

Mono 7.5W BTL Output, RL = 8Ω

Boomer

audio

power

amplifiers

were

designed

•

Short Circuit Protection

specifically to provide high quality output power with a

•

Unity-Gain Stable

minimal

amount

of

external

components.

The

•

External Gain Configuration Capability

LM4950 does not require bootstrap capacitors or

snubber circuits. Therefore, it is ideally suited for

display applications requiring high power and minimal

KEY SPECIFICATIONS

size.

•

Quiescent Power Supply Current 16mA (typ)

The LM4950 features a low-power consumption

•

POUT (SE)

active-low shutdown mode. Additionally, the LM4950

–

VDD = 12V, RL = 4Ω, 1% THD+N: 3.1W (typ)

features an internal thermal shutdown protection

•

POUT (BTL)

mechanism along with short circuit protection.

–

VDD = 12V, RL = 8Ω, 10% THD+N: 7.5W (typ)

The LM4950 contains advanced pop & click circuitry

that eliminates noises which would otherwise occur

•

Shutdown Current 40

μA (typ)

during turn-on and turn-off transitions.

APPLICATIONS

The LM4950 is a unity-gain stable and can be

configured by external gain-setting resistors.

•

Flat Panel Monitors

•

Flat Panel TVs

•

Computer Sound Cards

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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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is a trademark of ~ Texas Instruments Incorporated.

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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.