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LM4733

National Semiconductor
Part Number LM4733
Manufacturer National Semiconductor
Description 3-Channel 30W Audio Power Amplifier
Published Mar 22, 2005
Detailed Description LM4733 3 Channel 30W Audio Power Amplifier with Mute September 2003 LM4733 3 Channel 30W Audio Power Amplifier with Mu...
Datasheet PDF File LM4733 PDF File

LM4733
LM4733

Overview
LM4733 3 Channel 30W Audio Power Amplifier with Mute September 2003 LM4733 3 Channel 30W Audio Power Amplifier with Mute General Description The LM4733 is a three channel audio amplifier capable of typically delivering 30W per channel of continuous average output power into a 4Ω or 8Ω load with less than 10% THD+N from 20Hz - 20kHz.
The LM4733 has short circuit protection and a thermal shut down feature that is activated when the die temperature exceeds 150˚C.
The LM4733 also has an under voltage lock out feature for click and pop free power on and off.
Each amplifier of the LM4733 has an independent smooth transition fade-in/out mute.
The LM4733 has a wide operating supply range from ± 10V - ± 32V allowing for lower cost unregulated power supplies to be used.
The LM4733 amplifiers can easily be configured for bridge or parallel operation for higher power and bi-amp solutions Key Specifications j Output Power/Channel at 10% THD+N, 1kHz into 4Ω or 8Ω j THD+N at 3 x 1W into 8Ω, 1kHz j Mute Attenuation j PSRR j Slew Rate 30W (typ) 0.
03% (typ) 110dB (typ) 85dB (typ) 9V/µs (typ) Features n Low external component count n Quiet fade-in/out mute mode n Wide supply range: 20V - 64V Applications n n n n Audio Audio Audio Audio amplifier amplifier amplifier amplifier for for for for component stereo compact stereo self-powered speakers high-end and HD TVs Typical Application 200794B5 FIGURE 1.
Typical Audio Amplifier Application Circuit © 2003 National Semiconductor Corporation DS200794 www.
national.
com LM4733 Connection Diagrams Plastic Package (Note 13) 20079401 Top View Order Number LM4733TA See NS Package Number TA27A TO-220 Top Marking 20079402 Top View U - Wafer Fab Code Z - Assembly Plant Code XY - Date Code TT - Die Run Traceability L4733TA - LM4733TA www.
national.
com 2 LM4733 Absolute Maximum Ratings 2) (Notes 1, Soldering Information TA Package (10 seconds) Storage Temperature Thermal Resistance θJA θJC 30˚C/W 0.
9˚C/W 260˚C -40˚C to +150˚C I...


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