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LM4732

National Semiconductor
Part Number LM4732
Manufacturer National Semiconductor
Description Stereo 50W Audio Power Amplifier
Published Mar 22, 2005
Detailed Description LM4732 Stereo 50W Audio Power Amplifier with Mute July 2003 LM4732 Stereo 50W Audio Power Amplifier with Mute General ...
Datasheet PDF File LM4732 PDF File

LM4732
LM4732

Overview
LM4732 Stereo 50W Audio Power Amplifier with Mute July 2003 LM4732 Stereo 50W Audio Power Amplifier with Mute General Description The LM4732 is a stereo audio amplifier capable of typically delivering 50W per channel of continuous average output power into a 4Ω or 8Ω load with less than 10% THD+N from 20Hz - 20kHz.
The LM4732 has short circuit protection and a thermal shut down feature that is activated when the die temperature exceeds 150˚C.
The LM4732 also has an under voltage lock out feature for click and pop free power on and off.
Each amplifier of the LM4732 has an independent smooth transition fade-in/out mute.
The LM4732 has a wide operating supply range from +/-10V - +/-40V allowing for lower cost unregulated power supplies to be used.
The LM4732 amplifiers can easily be configured for bridge or parallel operation for 100W mono solutions.
Key Specifications j Output Power/Channel at 10% THD+N, 1kHz into 4Ω or 8Ω j THD+N at 2 x 1W into 8Ω, 1kHz j Mute Attenuation j PSRR j Slew Rate 50W (typ) 0.
01% (typ) 110dB (typ) 89dB (typ) 19V/µs (typ) Features n Low external component count n Quiet fade-in/out mute mode n Wide supply range: 20V - 80V 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 20072422 FIGURE 1.
Typical Audio Amplifier Application Circuit © 2003 National Semiconductor Corporation DS200724 www.
national.
com LM4732 Connection Diagrams Plastic Package (Note 13) 200724D7 Top View Order Number LM4732TA See NS Package Number TA27A TO-220 Top Marking 200724D6 Top View U - Wafer Fab Code Z - Assemble Plant Code XY - Date Code TT - Die Run Traceability L4732TA - LM4732TA www.
national.
com 2 LM4732 Absolute Maximum Ratings 2) (Notes 1, Soldering Information TA Package (10 seconds) Storage Temperature Thermal Resistance θJA θJC 30˚C/W 0.
8˚C/W 260˚C -40˚C to +150˚C If Military/Aerospace specifi...


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