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National Semiconductor Electronic Components Datasheet

LM4819 Datasheet

350mW Audio Power Amplifier

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LM4819 pdf
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April 2002
LM4819
350mW Audio Power Amplifier with Shutdown Mode
General Description
The LM4819 is a mono bridged power amplifier that is ca-
pable of delivering 350mWRMS output power into a 16load
or 300mWRMS output power into an 8load with 10%
THD+N from a 5V power supply.
The LM4819 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 LM4819 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 LM4819
can be configured using external gain-setting resistors. The
device is available in LLP, MSOP, and SO package types to
suit various applications.
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 LLP, SOP, and MSOP 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
FIGURE 1. Typical Audio Amplifier Application Circuit
DS200136-1
Boomer® is a registered trademark of National Semiconductor Corporation.
© 2002 National Semiconductor Corporation DS200136
www.national.com


National Semiconductor Electronic Components Datasheet

LM4819 Datasheet

350mW Audio Power Amplifier

No Preview Available !

LM4819 pdf
Connection Diagrams
Small Outline (SO) Package
DS200136-35
Top View
Order Number LM4819M
See NS Package Number M08A
Mini Small Outline (MSOP) Package
DS200136-36
Top View
Order Number LM4819MM
See NS Package Number MUA08A
LLP Package
DS200136-74
Top View
Order Number LM4819LD
See NS Package Number LDA08B
SO Marking
DS200136-72
Top View
XY - Date Code
TT - Die Traceability
Bottom 2 lines - Part Number
MSOP Marking
DS200136-71
Top View
G - Boomer Family
19 - LM4819MM
www.national.com
2


Part Number LM4819
Description 350mW Audio Power Amplifier
Maker National Semiconductor
Total Page 21 Pages
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