LM4781TA National Semiconductor, LM4781TA Datasheet - Page 14

• Manufacturer Part Number: LM4781TA
• Description: Audio Power Amplifier IC
• Manufacturer: National Semiconductor

Specifications of LM4781TA

• Amplifier Case Style: TO-220
• Peak Reflow Compatible (260 C): No
• Termination Type: Through Hole
• Supply Voltage Max: 56V
• Leaded Process Compatible: No
• Package / Case: 27-TO-220
• Operational Class: Class-AB
• Audio Amplifier Output Configuration: 3-Channel Stereo
• Output Power (typ): 35x3@8OhmW
• Audio Amplifier Function: Speaker
• Input Offset Voltage: 10@±28VmV
• Input Bias Current: 1uA
• Total Harmonic Distortion: 0.2@8Ohm@20W%
• Single Supply Voltage (typ): 18V
• Dual Supply Voltage (typ): ±12/±15/±18/±24/±28V
• Power Supply Requirement: Single/Dual
• Power Dissipation: 125W
• Unity Gain Bandwidth Product (typ): 8MHz
• Rail/rail I/o Type: No
• Power Supply Rejection Ratio: 125dB
• Single Supply Voltage (min): 20V
• Single Supply Voltage (max): 70V
• Dual Supply Voltage (min): ±10V
• Dual Supply Voltage (max): ±35V
• Operating Temp Range: -20C to 85C
• Operating Temperature Classification: Commercial
• Mounting: Through Hole
• Pin Count: 27 +Tab
• Package Type: TO-220
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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Typical Performance Characteristics
±
24V, All Chs in Parallel Mode (Note18),
Chs 1&3 in Parallel Mode (Note18),
Output Power vs Supply Voltage
f = 1kHz, R
THD+N vs Output Power
R
L
= 2Ω, 80kHz BW
Safe Area
L
= 4Ω, 80kHz BW
200673C6
20067324
20067328
14
(Continued)
Chs 1&3 in Bridge Mode (Note17),
All Chs in Parallel Mode (Note18),
Output Power vs Supply Voltage
Output Power vs Supply Voltage
f = 1kHz, R
f = 1kHz, R
SpiKe Protection Response
L
L
= 8Ω, 80kHz BW
= 2Ω, 80kHz BW
200673C7
20067332
20067341