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LM4950TS bảng dữ liệu(PDF) 1 Page - Texas Instruments

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Giải thích chi tiết về linh kiện  LM4950 Boomer ??Audio Power Amplifier Series 7.5W Mono-BTL or 3.1W Stereo Audio Power Amplifier
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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
1
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
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
1
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.
2
is a trademark of ~ Texas Instruments Incorporated.
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.


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