TPA2012D2
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SLOS438C–DECEMBER 2004–REVISED MARCH 2007
TYPICAL CHARACTERISTICS (continued)
POWER DISSIPATION
vs
OUTPUT POWER
EFFICIENCY
vs
OUTPUT POWER
EFFICIENCY
vs
OUTPUT POWER
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
1.4
1.2
R
= 4 Ω
Class-AB, V = 5 V
DD
R = 8 Ω
L
L
R
= 4 Ω
L
V
= 5 V
DD
V
= 5 V
DD
V
= 3.6 V
DD
1
0.8
0.6
0.4
V
= 2.5 V
DD
V
V
= 3.6
DD
Class-AB, V = 5 V
DD
V
= 2.5 V
DD
R
L
= 8 Ω
Class-AB
R
= 4 Ω
L
Class-AB
QFN
QFN
QFN
0.2
0
R
L
= 8 Ω
Powers are per Channel
1.5
Powers are per Channel
0.2 0.4 0.6 0.8 1.2
Powers are per Channel
1.5
0
0.5
1
2
2.5
0
0.5
1
2
2.5
0
1
1.4
P − Output Power − W
O
P
− Output Power − W
P
− Output Power − W
O
O
Figure 25.
Figure 26.
Figure 27.
POWER DISSIPATION
vs
OUTPUT POWER
POWER DISSIPATION
vs
OUTPUT POWER
EFFICIENCY
vs
OUTPUT POWER
1.4
1.2
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
100
90
80
70
60
50
40
30
20
10
0
Class-AB, V = 5 V
DD
R
L
= 4 Ω
R
L
= 4 Ω
R
L
= 4 Ω
Class-AB, V = 3.6 V
DD
V
= 3.6 V
DD
1
Class-AB,
= 3.6 V
V
= 5 V
V
Class-AB, V = 5 V
DD
DD
DD
= 8 Ω
0.8
R
L
R
L
= 8 Ω
R
L =
4 Ω
0.6
0.4
0.2
0
WCSP
WCSP
Class-AB, V = 5 V
DD
R
L
= 8 Ω
R
L
= 4 Ω
R
L
= 8 Ω
WCSP
Powers are per Channel
0.6 0.8 1.2
Powers are per Channel
1.5
0
0.5
1
2
2.5
0
0.2
0.4
1
1.4
0
0.2 0.4 0.6 0.8
1
1.2 1.4 1.6
P
− Output Power − W
P
− Output Power − W
O
O
P
− Output Power − W
O
Figure 28.
Figure 29.
Figure 30.
EFFICIENCY
vs
OUTPUT POWER
OUTPUT POWER
vs
SUPPLY VOLTAGE
100
R
2
= 8 Ω
L
V
= 5 V
R = 4 W,
L
DD
90
80
70
60
50
40
30
20
10
1.8
THD+N = 10%
1.6
1.4
1.2
R
L
= 4 W,
THD+N = 1%
V
= 3.6 V
DD
R
= 8 W,
L
THD+N = 10%
1
Class-AB, V = 5 V
DD
0.8
0.6
0.4
0.2
WCSP
R
L
= 8 W,
THD+N = 1%
0
0
0.2
0.4
0.6 0.8
1
1.2
1.4
0
2.5
3
3.5
4
4.5
5
P
− Output Power − W
O
V
DD
− Supply Voltage − V
Figure 31.
Figure 32.
10
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