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LM4780

Features: ` SPiKe Protection` Low external component count` Quiet fade-in/out mute mode` Wide supply range: 20V - 84V` Signal-to-Noise Ratio 97dB (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. : 004395765 Detail

LM4780: Features: ` SPiKe Protection` Low external component count` Quiet fade-in/out mute mode` Wide supply range: 20V - 84V` Signal-to-Noise Ratio 97dB (ref. to PO = 1W)Application· Audio amplifier for c...

LM4780 Data Sheet

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Part Number:
LM4780
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 - 84V
` Signal-to-Noise Ratio 97dB (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

Connection Diagram




Specifications

Power@ 4Ohms, 1% THD 60 Watt
Power@ 8Ohms, 1% THD 55 Watt
THD 0.03 %
PSRR 120 dB
SNR 114 dB
Channels 2 Channels
THD Conditions Po=60W @ Vs=±35V, RL=4ohms
PSRR Conditions V==40V to20V,V-=-40V,Vcm=0V,Io=omA
SNR Conditions Po=50Wrms,A-weighted filter,f-in-1kHz,Rs=25ohms
User Supply 70 Volt
Supply Range +20 - +84V
Mute/Shutdown Mute
Mono/Stereo Mono/stereo
Gain Bandwidth 8 MHz
Slew Rate 19 Volts/usec
Temperature Min -20 deg C
Temperature Max 85 deg C
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Supply Voltage |V+| + |V-|
(No Signal) .....................94V
Supply Voltage |V+| + |V-|
(Input Signal) ...................84V
Common Mode Input Voltage .. (V+ or V-) and
................ |V+| + |V-| 80V
Differential Input Voltage (Note 13) .... 60V
Output Current Internally Limited
Power Dissipation (Note 3) .........125W
ESD Susceptability (Note 4) .........3.0kV
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 ...................... 0.8°C/




Description

The LM4780 is a stereo audio amplifier capable of typically delivering 60W per channel of continuous average output power into an 8 load with less than 0.5% THD+N from 20Hz - 20kHz.

The LM4780 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 LM4780'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 LM4780 places it in a class above discrete and hybrid amplifiers.

Each amplifier of the LM4780 has an independent smooth transition fade-in/out mute.

The LM4780 can easily be configured for bridge or parallel operation for 120W mono solutions.






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