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LM4818 Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM4818
Description  350mW Audio Power Amplifier with Shutdown Mode
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4818 Datasheet(HTML) 1 Page - National Semiconductor (TI)

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LM4818
350mW Audio Power Amplifier with Shutdown Mode
General Description
The LM4818 is a mono bridged power amplifier that is ca-
pable of delivering 350mW
RMS output power into a 16Ω load
or 300mW
RMS output power into an 8Ω load with 10%
THD+N from a 5V power supply.
The LM4818 Boomer audio power amplifier is designed
specifically to provide high quality output power and mini-
mize PCB area with surface mount packaging and a minimal
amount of external components. Since the LM4818 does not
require output coupling capacitors, bootstrap capacitors or
snubber networks, it is optimally suited for low-power por-
table applications.
The closed loop response of the unity-gain stable LM4818
can be configured using external gain-setting resistors. The
device is available in SO package type to suit various appli-
cations.
Key Specifications
n
THD+N at 1kHz, 350mW continuous average output
power into 16
10% (max)
n
THD+N at 1kHz, 300mW continuous average output
power into 8
10% (max)
n
Shutdown Current
0.7µA (typ)
Features
n
SOP surface mount packaging.
n
Switch on/off click suppression.
n
Unity-gain stable.
n
Minimum external components.
Applications
n
General purpose audio
n
Portable electronic devices
n
Information Appliances (IA)
Typical Application
Boomer® is a registered trademark of National Semiconductor Corporation.
DS200389-1
FIGURE 1. Typical Audio Amplifier Application Circuit
April 2002
© 2002 National Semiconductor Corporation
DS200389
www.national.com


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