ssm2317 Analog Devices, Inc., ssm2317 Datasheet - Page 10

• Manufacturer Part Number: ssm2317
• Description: Filterless High Efficiency Mono 3 W Class-d Audio Amplifier
• Manufacturer: Analog Devices, Inc.

SSM2317
Figure 22. Power Dissipation vs. Output Power into 8 Ω + 33 μH
Figure 23. Power Dissipation vs. Output Power into 4 Ω + 33 μH
100
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.12
0.10
0.08
0.06
0.04
0.02
90
80
70
60
50
40
30
20
10
0
0
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2
Figure 21. Efficiency vs. Output Power into 3 Ω + 33 μH
0
R
R
V
V
L
L
DD
DD
= 4Ω + 33µH
= 8Ω + 33µH
0.2
V
= 2.5V
= 2.5V
DD
= 2.5V
0.4
V
DD
OUTPUT POWER (W)
OUTPUT POWER (W)
OUTPUT POWER (W)
0.6
= 3.6V
V
DD
V
= 3.6V
0.8
DD
= 3.6V
V
1.0
V
DD
DD
= 5V
= 5V
R
1.2
L
= 3Ω + 33µH
V
DD
1.4
= 5V
1.6
Rev. A | Page 10 of 20
Figure 24. Power Dissipation vs. Output Power into 3 Ω + 33 μH
350
300
250
200
150
100
800
700
600
500
400
300
200
100
0.6
0.5
0.4
0.3
0.2
0.1
50
Figure 25. Supply Current vs. Output Power into 8 Ω + 33 μH
Figure 26. Supply Current vs. Output Power into 4 Ω + 33 μH
0
0
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2
V
R
R
R
DD
L
L
L
= 3Ω + 33µH
= 8Ω + 33µH
= 4Ω + 33µH
= 2.5V
0.2
V
DD
V
DD
= 2.5V
0.4
= 2.5V
OUTPUT POWER (W)
OUTPUT POWER (W)
V
OUTPUT POWER (W)
DD
0.6
= 3.6V
V
V
DD
DD
0.8
= 3.6V
= 3.6V
1.0
V
DD
= 5V
1.2
V
V
DD
DD
= 5V
= 5V
1.4
1.6