LM4952_15 Datasheet, PDF (1/25 Pages) Texas Instruments – Boomer Audio Power Amplifier Series 3.1W Stereo-SE Audio Power Amplifier with DC Volume Control

LM4952
www.ti.com
SNAS230A – AUGUST 2004 – REVISED MAY 2013
LM4952 Boomer™ Audio Power Amplifier Series 3.1W Stereo-SE Audio Power Amplifier
with DC Volume Control
Check for Samples: LM4952
FEATURES
1
•23 Pop & Click Circuitry Eliminates Noise During
Turn-on and Turn-off Transitions
• Low Current, Active-low Shutdown Mode
• Low Quiescent Current
• Stereo 3.8W Output, R_L = 4Ω
• DC-controlled Volume Control
• Short Circuit Protection
APPLICATIONS
• Flat Panel Monitors
• Flat Panel TV's
• Computer Sound Cards
KEY SPECIFICATIONS
• Quiscent Power Supply Current 18mA (typ)
• P_OUT @
V_DD = 12V, RL = 4Ω, 10% THD+N 3.8W (typ)
• Shutdown current 55μA (typ)
DESCRIPTION
The LM4952 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 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 bootstrap capacitors or
snubber circuits. Therefore, it is ideally suited for
display applications requiring high power and minimal
size.
The LM4952 features a low-power consumption
active-low shutdown mode. Additionally, the LM4952
features an internal 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.
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.
Boomer is a trademark of Texas Instruments Incorporated.
2
All other trademarks are the property of their respective owners.
3
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 © 2004–2013, Texas Instruments Incorporated