lm4733 National Semiconductor Corporation, lm4733 Datasheet
lm4733
Manufacturer Part Number
lm4733
Description
3 Channel 30w Audio Power Amplifier With Mute
Manufacturer
National Semiconductor Corporation
Datasheet
1.LM4733.pdf
(23 pages)
Available stocks
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Part Number:
lm4733A
Manufacturer:
ST/先科
Quantity:
20 000
© 2003 National Semiconductor Corporation
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
-
be used.
The LM4733 amplifiers can easily be configured for bridge or
parallel operation for higher power and bi-amp solutions
Typical Application
±
32V allowing for lower cost unregulated power supplies to
FIGURE 1. Typical Audio Amplifier Application Circuit
DS200794
±
10V
Key Specifications
Features
n Low external component count
n Quiet fade-in/out mute mode
n Wide supply range: 20V - 64V
Applications
n Audio amplifier for component stereo
n Audio amplifier for compact stereo
n Audio amplifier for self-powered speakers
n Audio amplifier for high-end and HD TVs
j
j
j
j
j
1kHz into 4Ω or 8Ω
Output Power/Channel at 10% THD+N,
THD+N at 3 x 1W into 8Ω, 1kHz
Mute Attenuation
PSRR
Slew Rate
200794B5
September 2003
www.national.com
110dB (typ)
0.03% (typ)
9V/µs (typ)
85dB (typ)
30W (typ)
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