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LM4802B Datasheet(PDF) 6 Page - Texas Instruments

Part # LM4802B
Description  Audio Power Amplifier Series Audio Power Amplifier with Boost Converter to Drive Ceramic Speakers
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM4802B Datasheet(HTML) 6 Page - Texas Instruments

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20
20k
FREQUENCY (Hz)
-100
+0
10k
1k
2k
5k
50 100 200 500
-90
-80
-70
-60
-50
-40
-30
-20
-10
-95
-85
-75
-65
-55
-45
-35
-25
-15
-5
20
20k
FREQUENCY (Hz)
-100
+0
10k
1k
2k
5k
50 100 200 500
-90
-80
-70
-60
-50
-40
-30
-20
-10
-95
-85
-75
-65
-55
-45
-35
-25
-15
-5
0
1_
2_
3_
4_
5_
6
VDD (V)
0_
200_
400_
600_
800_
1000
1200
V1 = 5.8V
V1 = 5.0V
V1 = 6.1V
2.5
3
3.5
4
4.5
5
5.5
SUPPLY VOLTAGE (V)
0
5
10
15
20
25
2
V1 = 6.1V
V1 = 5.8V
V1 = 5.0V
0.001
0.01
0.1
1
10
5.10
7.35
9.62
11.88
14.14
OUTPUT VOLTAGE (VP-P)
2.83
0.002
0.02
0.2
2
0.005
0.05
0.5
5
f = 10 kHz
f = 1 kHz
f = 200 Hz
0.001
0.01
0.1
1
10
5.10
7.35
9.62
11.88
14.14
OUTPUT VOLTAGE (VP-P)
2.83
0.002
0.02
0.2
2
0.005
0.05
0.5
5
f = 10 kHz
f = 1 kHz
f = 200 Hz
LM4802B, LM4802BLQBD
SNAS243C – MAY 2004 – REVISED MARCH 2005
www.ti.com
Typical Performance Characteristics (continued)
THD+N vs Output Voltage
THD+N vs Output Voltage
VDD = 3V, ZL = 2μF + 30Ω, V1 = 6.1V
VDD = 4.2V, ZL = 2μF + 30Ω, V1 = 6.1V
Figure 9.
Figure 10.
Supply Voltage vs Supply Current
Load Current vs VDD
ZL = 2µF + 30Ω, VIN = 0V
Figure 11.
Figure 12.
PSRR vs Frequency
PSRR vs Frequency
V1 = 5.0V, ZL = 2μF + 30Ω,
V1 = 5.8V, ZL = 2μF + 30Ω,
Vripple = 200mVpp, AV-BTL = 26dB
Vripple = 200mVpp, AV-BTL = 26dB
Figure 13.
Figure 14.
6
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Copyright © 2004–2005, Texas Instruments Incorporated
Product Folder Links: LM4802B LM4802BLQBD


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