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LM4802B Datasheet(PDF) 7 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) 7 Page - Texas Instruments

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1
2
3
4
4.5
OUTPUT VOLTAGE (Vrms)
0
20
40
60
80
100
120
140
160
0.5
0
20
40
60
80
100 120 140 160
AMBIENT TEMPERATURE (C)
0
0.02
0.04
0.06
0.08
0.1
0.12
0.14
0.16
1
2
3
4
5
OUTPUT VOLTAGE (Vrms)
0
50
100
150
200
0
VI = 6.1V
VI = 5.8V
VI = 5.0V
0
20
40
60
80
100 120 140 160
AMBIENT TEMPERATURE (C)
0
0.02
0.04
0.06
0.08
0.1
0.12
0.14
0.16
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
LM4802B, LM4802BLQBD
www.ti.com
SNAS243C – MAY 2004 – REVISED MARCH 2005
Typical Performance Characteristics (continued)
PSRR vs Frequency
Power Derating Curve - WQFN
V1 = 6.1V, ZL = 2μF + 30Ω,
PDMAX = 150mW
Vripple = 200mVpp, AV-BTL = 26dB
VDD = 3.0V, ZL = 2μF + 30Ω
Figure 15.
Figure 16.
Power Derating Curve - WQFN
PDMAX = 136mW
Power Dissipation vs Output Voltage
VDD = 4.2V, ZL = 2μF + 30Ω
VDD = 3.0V, ZL = 2μF + 30Ω
Figure 17.
Figure 18.
Power Dissipation vs Output Voltage
VDD = 4.2V, ZL = 2μF + 30Ω
Amplifier Open Loop
From top to bottom: V1 = 6.1V, V1 = 5.8V, V1 = 5.0V
Frequency Response
Figure 19.
Figure 20.
Copyright © 2004–2005, Texas Instruments Incorporated
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Product Folder Links: LM4802B LM4802BLQBD


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