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LM4755

National Semiconductor
Part Number LM4755
Manufacturer National Semiconductor
Description Stereo 11W Audio Power Amplifier
Published Mar 22, 2005
Detailed Description LM4755 Stereo 11W Audio Power Amplifier with Mute February 1999 LM4755 Stereo 11W Audio Power Amplifier with Mute Gene...
Datasheet PDF File LM4755 PDF File

LM4755
LM4755

Overview
LM4755 Stereo 11W Audio Power Amplifier with Mute February 1999 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 4Ω load or 7W per channel into 8Ω using a single 24V supply at 10% THD+N.
The internal mute circuit and pre-set gain resistors 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 consumer electronic manufacturers for stereo TV and compact stereo applications.
The LM4755 is specifically designed for single supply operation.
n PO at 10% THD @ 1 kHz into 8Ω bridged TO-263 pkg.
at VCC = 12V 5W(typ) Features n n n n n n n Drives 4Ω and 8Ω loads Integrated mute function Internal Gain Resistors Minimal external components needed Single supply operation Internal current limiting and thermal protection Compact 9-lead TO-220 package Key Specifications n Output power at 10% THD with 1 kHz into 4Ω at VCC = 24V 11W(typ) n Output power at 10% THD with 1 kHz into 8Ω at VCC = 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 VCC = 12V 2.
5W(typ) Applications n Stereos TVs n Compact stereos n Mini component stereos Typical Application Connection Diagrams Plastic Package DS100059-2 Package Description Top View Order Number LM4755T Package Number TA09A DS100059-36 DS100059-1 FIGURE 1.
Typical Audio Amplifier Application Circuit Top View Order Number LM4755TS Package Number TS9A © 1999 National Semiconductor Corporation DS100059 www.
national.
com Absolute Maximum Ratings (Note 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.
Supply Voltage Input Voltage Output Current Power Dissipation (Note 3) ESD Susceptability (Note 4) Junction Temperature Soldering Inform...


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