LM4950TSX-NOPB Datasheet, PDF (1/30 Pages) Texas Instruments – LM4950 Boomer ™ Audio Power Amplifier Series 7.5W Mono-BTL or 3.1W Stereo Audio Power Amplifier

LM4950
www.ti.com
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
FEATURES
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•23 Pop & Click Circuitry Eliminates Noise During
Turn-On and Turn-Off Transitions
• Low Current, Active-Low Shutdown Mode
• Low Quiescent Current
• Stereo 3.1W Output, R_L = 4Ω
• Mono 7.5W BTL Output, R_L = 8Ω
• Short Circuit Protection
• Unity-Gain Stable
• External Gain Configuration Capability
KEY SPECIFICATIONS
• Quiescent Power Supply Current 16mA (typ)
• P_OUT (SE)
– V_DD = 12V, R_L = 4Ω, 1% THD+N: 3.1W (typ)
• P_OUT (BTL)
– V_DD = 12V, R_L = 8Ω, 10% THD+N: 7.5W (typ)
• Shutdown Current 40μA (typ)
APPLICATIONS
• Flat Panel Monitors
• Flat Panel TVs
• Computer Sound Cards
DESCRIPTION
The LM4950 is a dual audio power amplifier primarily
designed for demanding applications in flat panel
monitors and TV's. It is capable of delivering 3.1
watts per channel to a 4Ω single-ended load with less
than 1% THD+N or 7.5 watts mono BTL to an 8Ω
load, with less than 10% THD+N from a 12V_DC power
supply.
Boomer audio power amplifiers were designed
specifically to provide high quality output power with a
minimal amount of external components. The
LM4950 does not require bootstrap capacitors or
snubber circuits. Therefore, it is ideally suited for
display applications requiring high power and minimal
size.
The LM4950 features a low-power consumption
active-low shutdown mode. Additionally, the LM4950
features an internal thermal shutdown protection
mechanism along with short circuit protection.
The LM4950 contains advanced pop & click circuitry
that eliminates noises which would otherwise occur
during turn-on and turn-off transitions.
The LM4950 is a unity-gain stable and can be
configured by external gain-setting resistors.
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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.
is a trademark of ~ Texas Instruments Incorporated.
2
All other trademarks are the property of their respective owners.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2003–2013, Texas Instruments Incorporated