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LM4755 Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM4755
Description  Stereo 11W Audio Power Amplifier with Mute
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4755 Datasheet(HTML) 1 Page - National Semiconductor (TI)

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LM4755
Stereo 11W Audio Power Amplifier with Mute
General Description
The LM4755 is a stereo audio amplifier capable of delivering
11W per channel of continuous average output power to a
4
Ω load or 7W per channel into 8Ω using a single 24V supply
at 10% THD+N. The internal mute circuit and pre-set gain re-
sistors provide for a very economical design solution.
Output power specifications at both 20V and 24V supplies
and low external component count offer high value to con-
sumer electronic manufacturers for stereo TV and compact
stereo applications. The LM4755 is specifically designed for
single supply operation.
Key Specifications
n Output power at 10% THD with 1 kHz into 4
Ω at V
CC =
24V
11W(typ)
n Output power at 10% THD with 1 kHz into 8
Ω at V
CC =
24V
7W(typ)
n Closed loop gain
34 dB(typ)
n PO at 10% THD @ 1 kHz into 4Ω single-ended TO-263
pkg. at V
CC=12V
2.5W(typ)
n PO at 10% THD @ 1 kHz into 8Ω bridged TO-263 pkg.
at V
CC=12V
5W(typ)
Features
n Drives 4
Ω and 8Ω loads
n Integrated mute function
n Internal Gain Resistors
n Minimal external components needed
n Single supply operation
n Internal current limiting and thermal protection
n Compact 9-lead TO-220 package
Applications
n Stereos TVs
n Compact stereos
n Mini component stereos
Typical Application
Connection Diagrams
DS100059-1
FIGURE 1. Typical Audio Amplifier Application Circuit
Plastic Package
DS100059-2
Package Description
Top View
Order Number LM4755T
Package Number TA09A
DS100059-36
Top View
Order Number LM4755TS
Package Number TS9A
February 1999
© 1999 National Semiconductor Corporation
DS100059
www.national.com


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