Datasheet
0 250 500 750 1000 1250 1500
OUTPUT POWER (mW)
POWER DISSIPATION (mW)
V
DD
= 5V
V
DD
= 3.6V
V
DD
= 2.5V
0
50
100
150
200
250
0
100
200
300
400
500
0 500 1000 1500 2000
OUTPUT POWER (mW)
POWER DISSIPATION (mW)
V
DD
= 5V
V
DD
= 3.6V
V
DD
= 2.5V
0 500 1000 1500 2000
OUTPUT POWER (mW)
EFFICIENCY (%)
V
DD
= 5V
V
DD
= 3.6VV
DD
= 2.5V
0
10
20
30
40
50
60
70
80
90
100
0 500 1000 1500 2000
OUTPUT POWER (mW)
EFFICIENCY (%)
V
DD
= 2.5V
0
10
20
30
40
50
60
70
80
90
100
V
DD
= 3.6V
V
DD
= 5V
10 100 1000 10000 100000
FREQUENCY (Hz)
THD+N (%)
0.001
0.01
0.1
1
10
100
10 100 1000 10000 100000
FREQUENCY (Hz)
THD+N (%)
0.001
0.01
0.1
1
10
100
LM4675, LM4675SDBD, LM4675TLBD
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SNAS353C –AUGUST 2006–REVISED MAY 2013
Typical Performance Characteristics (continued)
The performance graphs were taken using the Audio Precision AUX-0025 Switching Amplifier measurement Filter in series
with the LC filter on the demo board.
THD + N vs Frequency THD + N vs Frequency
V
DD
= 3.6V, P
OUT
= 100mW, R
L
= 4Ω V
DD
= 5V, P
OUT
= 150mW, R
L
= 4Ω
Figure 11. Figure 12.
Efficiency vs. Output Power Efficiency vs. Output Power
R
L
= 4Ω, f = 1kHz R
L
= 8Ω, f = 1kHz
Figure 13. Figure 14.
Power Dissipation vs. Output Power Power Dissipation vs. Output Power
R
L
= 4Ω, f = 1kHz R
L
= 8Ω, f = 1kHz
Figure 15. Figure 16.
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