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LM4876M Datasheet

  • LM4876M

  • 1.1W Audio Power Amplifier with Shutdown Logic Low

  • 9頁

  • NSC

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LM4876 1.1W Audio Power Amplifier with Shutdown Logic Low
February 2000
LM4876
1.1W Audio Power Amplifier with Shutdown Logic Low
General Description
The LM4876 is a bridge-connected audio power amplifier ca-
pable of delivering typically 1.1W of continuous average
power to an 8鈩?load with 0.5% (THD) from a 5V power sup-
ply.
Boomer audio power amplifiers were designed specifically to
provide high quality output power with a minimal amount of
external components. Since the LM4876 does not require
output coupling capacitors, bootstrap capacitors, or snubber
networks, it is optionally suited for low-power portable sys-
tems.
The LM4876 features an externally controlled, low-power
consumption shutdown mode, which is achieved by driving
pin 1 with logic low. Additionally, the LM4876 features an in-
ternal thermal shutdown protection mechanism.
The LM4876 is unity-gain stable and can be configured by
external gain-setting resistors.
Key Specifications
n
THD at 1 kHz at 1W continuous
average output power into 8鈩?/div>
n
Output power at 10% THD+N
at 1 kHz into 8鈩?/div>
n
Shutdown Current
0.5% (max)
1.5W (typ)
0.01 碌A (typ)
Features
n
No output coupling capacitors, bootstrap capacitors, or
snubber circuits are necessary
n
Small Outline packaging
n
Unity-gain stable
n
External gain configuration capability
n
Pin compatible with LM4861 and LM4871
Applications
n
n
n
n
Mobile Phones
Portable Computers
Desktop Computers
Low Voltage Audio Systems
Typical Application
Connection Diagram
Small Outline Package
DS101299-2
Top View
Order Number LM4876M
See NS Package Number M08A
DS101299-1
FIGURE 1. Typical Audio Amplifier Application Circuit
Boomer
廬
is a registered trademark of National Semiconductor Corporation.
漏 2000 National Semiconductor Corporation
DS101299
www.national.com

LM4876M 產(chǎn)品屬性

  • National Semiconductor (TI)

  • Class-AB

  • 1.5 W x 1 at 8 Ohms

  • 1-Channel Mono

  • 0.25 %

  • 3 V, 5 V

  • + 85 C

  • SMD/SMT

  • SOIC-8 Narrow

  • Tube

  • 8 Ohms

  • Single

  • - 40 C

  • Differential

  • Single

  • 5.5 V

  • 2 V

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