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LM4781

Features: ` SPiKe Protection` Low external component count` Quiet fade-in/out mute mode` Wide supply range: 20V - 70V` Signal-to-Noise Ratio 93dB (ref. to PO = 1W)Application· Audio amplifier for component stereo· Audio amplifier for compact stereo· Audio amplifier for self-powered speakers· Audi...

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SeekIC No. : 004395766 Detail

LM4781: Features: ` SPiKe Protection` Low external component count` Quiet fade-in/out mute mode` Wide supply range: 20V - 70V` Signal-to-Noise Ratio 93dB (ref. to PO = 1W)Application· Audio amplifier for c...

LM4781 Data Sheet

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Part Number:
LM4781
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

` SPiKe Protection
` Low external component count
` Quiet fade-in/out mute mode
` Wide supply range: 20V - 70V
` Signal-to-Noise Ratio 93dB (ref. to PO = 1W)




Application

· Audio amplifier for component stereo
· Audio amplifier for compact stereo
· Audio amplifier for self-powered speakers
· Audio amplifier for high-end and HD TVs




Pinout






Specifications

Supply Voltage |V+| + |V-|
(No Signal).................... 72V
Supply Voltage |V+| + |V-|
(Input Signal) ..................70V
Common Mode Input Voltage . (V+ or V-) and
............... |V+| + |V-| 60V
Differential Input Voltage (Note 13) .... 60V
Output Current Internally Limited
Power Dissipation (Note 3) ........ 125W
ESD Susceptability (Note 4) ........2.0kV
ESD Susceptability (Note 5)........ 200V
Junction Temperature (TJMAX) (Note 9) 150°C
Soldering Information
TA Package (10 seconds)......... 260°C
Storage Temperature .. -40°C to +150°C
Thermal Resistance
JA ..................... 30°C/W
JC .................... 0.9°C/W




Description

The LM4781 is a three channel audio amplifier capable of typically delivering 35W per channel of continuous average
output power into an 8 load with less than 0.5% THD+N from 20Hz - 20kHz.

The LM4781 is fully protected utilizing National's Self Peak Instantaneous Temperature (°Ke) (SPiKeTM) protection circuitry. SPiKe provides a dynamically optimized Safe Operating Area (SOA). SPiKe protection completely safeguards the LM4781's outputs against over-voltage, under-voltage, overloads, shorts to the supplies or GND, thermal runaway and instantaneous temperature peaks. The advanced protection features of the LM4781 places it in a class above discrete and hybrid amplifiers.

Each amplifier of the LM4781 has an independent smooth transition fade-in/out mute.

The LM4781 can easily be configured for bridge or parallel operation for higher power and bi-amp solutions.






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