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LM4765 Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. LM4765
Description  Audio Power Amplifier Series Dual 30W Audio Power Amplifier with Mute and Standby Modes
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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LM4765
Overture
Audio Power Amplifier Series Dual 30W Audio Power
Amplifier with Mute and Standby Modes
General Description
The LM4765 is a stereo audio amplifier capable of delivering
typically 30W per channel of continuous average output
power into an 8
Ω load with less than 0.1% (THD + N).
Each amplifier has an independent smooth transition fade-in/
out mute and a power conserving standby mode which can
be controlled by external logic.
The performance of the LM4765, utilizing its Self Peak In-
stantaneous Temperature (˚Ke) (SPiKe) Protection Cir-
cuitry, places it in a class above discrete and hybrid amplifi-
ers by providing an inherently, dynamically protected Safe
Operating Area (SOA). SPiKe Protection means that these
parts are safeguarded at the output against overvoltage, un-
dervoltage, overloads, including thermal runaway and in-
stantaneous temperature peaks.
Key Specifications
j THD+N at 1 kHz at 2 x 25W continuous average
output power into 8
Ω:
0.1% (max)
j THD+N at 1 kHz at continuous average
output power of 2 x 30W into 8
Ω:
0.009% (typ)
j Standby current:
6.5 mA (typ)
Features
n SPiKe Protection
n Minimal amount of external components necessary
n Quiet fade-in/out mute mode
n Standby-mode
n Non-Isolated 15-lead TO-220 package
Applications
n High-end stereo TVs
n Component stereo
n Compact stereo
Typical Application
Note: Numbers in parentheses represent pinout for amplifier B.
*Optional component dependent upon specific design requirements.
Connection Diagram
SPiKeProtection and Overtureare trademarks of National Semiconductor Corporation.
DS100927-1
FIGURE 1. Typical Audio Amplifier Application Circuit
Plastic Package
DS100927-2
Top View
Non-Isolated Package
Order Number LM4765T
See NS Package Number TA15A
August 1998
© 1999 National Semiconductor Corporation
DS100927
www.national.com




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