LM4781TA National Semiconductor, LM4781TA Datasheet - Page 24

• 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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Application Information
Bill Of Materials for Reference PCB
R
C
J
R
C
4
SN1
SN1
R
R
, J
J
IN1
IN1
R
C
5
B1
F1
, J
J
C
C
C
6
i1
i1
Symbol
, R
, C
, R
, C
1
, J
, R
, R
, R
, C
S1
S3
S5
, J
7
R
R
U
S
, J
SN2
SN2
8
, C
, C
, C
IN2
IN2
B2
F2
i2
G
M
i2
2
, J
1
1
, J
9
, R
, C
, R
, R
, R
, C
S2
S4
S6
, J
, R
, C
10
3
i3
i3
, J
B3
F3
11
IN3
IN3
SN3
SN3
12
2,200µF
Value
5.6kΩ
0.1µF
0.1µF
33kΩ
20kΩ
47µF
10µF
4.7Ω
2.7Ω
1kΩ
1kΩ
1µF
(Continued)
Tolerance
10%
20%
20%
20%
20%
20%
5%
1%
1%
1%
5%
5%
5%
24
27 lead TO-220 Power Socket
Non-Switched PC Mount RCA
PCB Banana Jack - BLACK
with push release lever or
PCB Banana Jack - RED
Metallized Polyester Film
Electrolytic Radial / 50V
Electrolytic Radial / 50V
Electrolytic Radial / 50V
SPDT (on-on) Switch
Monolithic Ceramic
Monolithic Ceramic
Type/Description
LM4781 IC
1/4 Watt
1/4 Watt
1/4 Watt
1/4 Watt
1/4 Watt
1/4 Watt
1/4 Watt
Jack
Comment