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LM4952 Datasheet

  • LM4952

  • 3.1W Stereo-SE Audio Power Amplifier with DC Volume Control

  • 20頁

  • NSC

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LM4952 3.1W Stereo-SE Stereo Audio Power Amplifier
with DC Volume Control
August 2004
LM4952
3.1W Stereo-SE Audio Power Amplifier
with DC Volume Control
General Description
The LM4952 is a dual audio power amplifier primarily de-
signed for demanding applications in flat panel monitors and
TV鈥檚. It is capable of delivering 3.1 watts per channel to a 4鈩?/div>
single-ended load with less than 1% THD+N when powered
by a 12V
DC
power supply.
Eliminating external feedback resistors, an internal, DC-
controlled, volume control allows easy and variable gain
adjustment.
Boomer audio power amplifiers were designed specifically to
provide high quality output power with a minimal amount of
external components. The LM4952 does not require boot-
strap capacitors or snubber circuits. Therefore, it is ideally
suited for display applications requiring high power and mini-
mal size.
The LM4952 features a low-power consumption active-low
shutdown mode. Additionally, the LM4952 features an inter-
nal thermal shutdown protection mechanism along with short
circuit protection.
The LM4952 contains advanced pop & click circuitry that
eliminates noises which would otherwise occur during
turn-on and turn-off transitions.
Key Specifications
j
Quiscent Power Supply Current
j
P
OUT
18mA (typ)
3.8W (typ)
55碌A(chǔ) (typ)
V
DD
= 12V, R
L
= 4鈩? 10% THD+N
j
Shutdown current
Features
n
Pop & click circuitry eliminates noise during turn-on and
turn-off transitions
n
Low current, active-low shutdown mode
n
Low quiescent current
n
Stereo 3.8W output, R
L
= 4鈩?/div>
n
DC-controlled volume control
n
Short circuit protection
Applications
n
Flat Panel Monitors
n
Flat panel TV鈥檚
n
Computer Sound Cards
Connection Diagram
200809E9
Top View
Order Number LM4952TS
See NS Package Number TS9A
U = Wafer Fab Code
Z = Assembly Plant Code
XY = Date Coce
TT = Die Traceability
L4952TS = LM4952TS
Boomer
廬
is a registered trademark of National Semiconductor Corporation.
漏 2004 National Semiconductor Corporation
DS200809
www.national.com

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