LM4864MMX National Semiconductor, LM4864MMX Datasheet

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LM4864MMX

Manufacturer Part Number
LM4864MMX
Description
IC AMP AUDIO PWR .725W AB 8MSOP
Manufacturer
National Semiconductor
Series
Boomer®r
Type
Class ABr
Datasheets

Specifications of LM4864MMX

Output Type
1-Channel (Mono)
Max Output Power X Channels @ Load
725mW x 1 @ 8 Ohm
Voltage - Supply
2.7 V ~ 5.5 V
Features
Shutdown, Thermal Protection
Mounting Type
Surface Mount
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
LM4864MMXTR

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© 2002 National Semiconductor Corporation
LM4864
725mW Audio Power Amplifier with Shutdown Mode
General Description
The LM4864 is a bridged audio power amplifier capable of
delivering 725mW of continuous average power into an 8
load with 1% THD+N from a 5V power supply.
Boomer
to provide high quality output power from a low supply volt-
age while requiring a minimal amount of external compo-
nents. Since the LM4864 does not require output coupling
capacitors, bootstrap capacitors or snubber networks, it is
optimally suited for low-power portable applications.
The LM4864 features an externally controlled, low power
consumption shutdown mode, and thermal shutdown protec-
tion.
The closed loop response of the unity-gain stable LM4864
can be configured by external gain-setting resistors. The
device is available in multiple package types to suit various
applications.
Typical Application
Boomer
®
is a registered trademark of National Semiconductor Corporation.
®
audio power amplifiers were designed specifically
FIGURE 1. Typical Audio Amplifier Application Circuit
DS012607
Key Specifications
j
j
Features
n MSOP, SOP, DIP, and LD packaging
n No output coupling capacitors, bootstrap capacitors, or
n Thermal shutdown protection circuitry
n Unity-gain stable
n External gain configuration capability
Applications
n Cellular phones
n Personal computers
n General purpose audio
LM4864LD, 4
LM4864LD, 8
LM4864M & LM4864N, 8
LM4864MM, 8
LM4864, 16
snubber circuits are necessary
P
Shutdown current
O
at 1% THD+N with V
load
load
load
load (Note 10)
DS012607-1
DD
load
= 5V, 1kHz
www.national.com
625mW (typ)
725mW (typ)
675mW (typ)
300mW (typ)
550mW (typ)
March 2002
0.7µA (typ)

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