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LM4782TA Datasheet

  • LM4782TA

  • 3 Channel 25W Audio Power Amplifier with Mute and Standby

  • 26頁

  • NSC

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LM4782 Overture
鈩?/div>
Audio Power Amplifier Series
3 Channel 25W Audio Power Amplifier with Mute and Standby
February 2004
LM4782
Overture
鈩?/div>
Audio Power Amplifier Series
3 Channel 25W Audio Power Amplifier with Mute and
Standby
General Description
The LM4782 is a three channel audio amplifier capable of
typically delivering 25W per channel of continuous average
output power into an 8鈩?load with less than 0.5% THD+N
from 20Hz - 20kHz.
The LM4782 is fully protected utilizing National鈥檚 Self Peak
Instantaneous Temperature (藲Ke) (SPiKe
TM
) protection cir-
cuitry. SPiKe provides a dynamically optimized Safe Operat-
ing Area (SOA). SPiKe protection completely safeguards the
LM4782鈥檚 outputs against over-voltage, under-voltage, over-
loads, shorts to the supplies or GND, thermal runaway and
instantaneous temperature peaks. The advanced protection
features of the LM4782 places it in a class above discrete
and hybrid amplifiers.
Each amplifier of the LM4782 has an independent smooth
transition fade-in/out mute and a power conserving standby
mode. The mute and standby modes can be controlled by
external logic.
The LM4782 can easily be configured for bridge or parallel
operation for higher power and bi-amp solutions.
Key Specifications
j
Output Power/Channel with 0.5% THD+N,
1kHz into 8鈩?/div>
j
THD+N at 3x15W into 8鈩?(20Hz - 20kHz)
j
THD+N at 3x15W into 6鈩?(20Hz - 20kHz)
j
THD+N at 3x15W into 4鈩?(20Hz - 20kHz)
j
Mute Attenuation
j
PSRR
j
Slew Rate
25W (typ)
0.2% (typ)
0.3% (typ)
0.4% (typ)
115dB (typ)
85dB (min)
18V/碌s (typ)
Features
n
n
n
n
n
n
SPiKe Protection
Low external component count
Quiet fade-in/out mute mode
Low power standby mode
Wide supply range: 20V - 64V
Signal-to-Noise Ratio
鈮?/div>
98dB (ref. to P
O
= 1W)
Applications
n
n
n
n
n
Audio
Audio
Audio
Audio
Audio
amplifier
amplifier
amplifier
amplifier
amplifier
for
for
for
for
for
component stereo
compact stereo
home theater in a box (HTB)
self-powered speakers
high-end and HD TVs
Typical Application
200811D2
FIGURE 1. Typical Audio Amplifier Application Circuit
SPiKe
鈩?/div>
Protection and
Overture
鈩?/div>
are trademarks of National Semiconductor Corporation.
漏 2004 National Semiconductor Corporation
DS200811
www.national.com

LM4782TA 產(chǎn)品屬性

  • National Semiconductor (TI)

  • Class-AB

  • 25 W x 3 at 8 Ohms

  • 3-Channel Stereo

  • 110 dB

  • 80 dB

  • 0.2 %

  • 18 V

  • 125000 mW

  • + 85 C

  • Through Hole

  • TO-220

  • Tube

  • 8 Ohms

  • +/- 12 V, +/- 15 V, +/- 18 V, +/- 24 V, +/- 28 V

  • 15 mV at +/- 25 V

  • Differential

  • - 20 C

  • Single

  • Single, Dual

  • 64 V

  • 20 V

LM4782TA相關型號PDF文件下載

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  • 英文版
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  • 英文版
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  • 英文版
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    NSC
  • 英文版
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  • 英文版
    Stereo 50W Audio Power Amplifier with Mute
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  • 英文版
    Stereo 50W Audio Power Amplifier with Mute
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  • 英文版
    3 Channel 30W Audio Power Amplifier with Mute
    NSC
  • 英文版
    3 Channel 30W Audio Power Amplifier with Mute
    NATIONAL
  • 英文版
    3 Channel 20W Audio Power Amplifier with Mute and Standby
    NSC
  • 英文版
    3 Channel 20W Audio Power Amplifier with Mute and Standby
    NATIONAL
  • 英文版
    Stereo 11W Audio Power Amplifier
    NSC
  • 英文版
    Stereo 11W Audio Power Amplifier
    NSC [National S...
  • 英文版
    Dual 10W Audio Power Amplifier w/Mute, Standby and Volume Co...
    NSC
  • 英文版
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