Datasheet

100
50
40
60
70
90
30
20
1.60
0
OUTPUT POWER (W)
EFFICIENCY (%)
0.2 0.4 0.6 0.8 1.0 1.2 1.4
80
10
0
-20
-40
-60
-80
-100
20 200 2k 20k
FREQUENCY (Hz)
PSRR (dB)
FIXED FREQUENCY
SPREAD SPECTRUM
100
50
40
60
70
90
30
20
4.00
0
OUTPUT POWER (W)
EFFICIENCY (%)
0.5 1.0 1.5 2.0 2.5 3.0 3.5
80
10
100
50
40
60
70
90
30
20
3.00
0
OUTPUT POWER (W)
EFFICIENCY (%)
0.5 1.0 1.5 2.0 2.5
80
10
10
1
0.1
0.01
10m 100m 1 5
OUTPUT POWER (W)
THD+N (%)
3V
5V
3.6V
10
1
0.1
0.01
10m 100m 1 5
OUTPUT POWER (W)
THD+N (%)
4.87 k:
5.35 k:
9.31 k:
LM48511
www.ti.com SNAS416G –JULY 2007–REVISED MAY 2013
Typical Performance Characteristics (continued)
THD+N vs Output Power THD+N vs Output Power
V
DD
= 3V, 3.6V, 5V, R
L
= 8Ω V
DD
= 3.6V, R
L
= 8Ω
f = 1kHz, filter = 22kHz, R
1
= 4.87kΩ, FF filter = 22kHz, PV
1
= 7.8V, PV
1
= 7V, PV
1
= 4.8V, FF
Figure 10. Figure 11.
Boost Amplifier vs Output Power Boost Amplifier vs Output Power
V
DD
= 5V, R
L
= 8Ω V
DD
= 3.6V, R
L
= 8Ω
f = 1kHz, PV
1
= 7.8V f = 1kHz, PV
1
= 7V
Figure 12. Figure 13.
Boost Amplifier vs Output Power PSRR vs Frequency
V
DD
= 3V, R
L
= 8Ω V
DD
= 5V, R
L
= 8Ω
f = 1kHz, PV
1
= 4.8V V
RIPPLE
= 200mV
PP
, PV
1
= 7.8V
Figure 14. Figure 15.
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