Typical Operating Characteristics (continued)
(MAX9736A, VPVDD = 12V, MOD = high, spread-spectrum modulation mode, VGND = VPGND = 0V, VSHDN = VMUTE = 5V, unless
otherwise noted.)
MAX9736
Mono/Stereo High-Power Class D Amplifier
8
_______________________________________________________________________________________
EFFICIENCY
vs. TOTAL OUTPUT POWER
MAX9736 toc17
TOTAL OUTPUT POWER (W)
25
20
15
10
5
030
EFFICIENCY
POWER DISSIPATION
EFFICIENCY
(%)
10
20
30
40
50
60
70
80
90
100
0
POWER
DISSIPATION
(W)
1
2
3
4
5
6
7
8
9
10
0
VPVDD = 24V,
FIXED FREQUENCY,
8
Ω LOAD
EFFICIENCY
vs. TOTAL OUTPUT POWER
MAX9736 toc18
TOTAL OUTPUT POWER (W)
25
20
15
10
5
030
EFFICIENCY
POWER DISSIPATION
EFFICIENCY
(%)
10
20
30
40
50
60
70
80
90
100
0
POWER
DISSIPATION
(W)
1
2
3
4
5
6
7
8
9
10
0
VPVDD = 24V,
SPREAD SPECTRUM,
8
Ω LOAD
EFFICIENCY
vs. TOTAL OUTPUT POWER
MAX9736 toc19
TOTAL OUTPUT POWER (W)
15
10
5
020
VPVDD = 12V,
FIXED FREQUENCY,
4
Ω LOAD
EFFICIENCY
(%)
10
20
30
40
50
60
70
80
90
100
0
POWER
DISSIPATION
(W)
1
2
3
4
5
6
7
8
9
10
0
EFFICIENCY
POWER DISSIPATION
EFFICIENCY
vs. TOTAL OUTPUT POWER
MAX9736 toc20
TOTAL OUTPUT POWER (W)
25
20
15
10
5
030
EFFICIENCY
POWER DISSIPATION
EFFICIENCY
(%)
10
20
30
40
50
60
70
80
90
100
0
POWER
DISSIPATION
(W)
1
2
3
4
5
6
7
8
9
10
0
VPVDD = 12V,
SPREAD SPECTRUM,
4
Ω LOAD
TOTAL OUTPUT POWER vs. VDD
LOAD = 8
Ω, f = 1kHz
MAX9736
toc21
SUPPLY VOLTAGE (V)
OUTPUT
POWER
(W)
25
10
20
15
5
10
15
20
25
30
35
40
0
530
1% THD+N
10% THD+N
TOTAL OUTPUT POWER vs. LOAD RESISTANCE
VDD = 12V, f = 1kHz, SPREAD SPECTRUM
MAX9736
toc22
LOAD RESISTANCE (
Ω)
OUTPUT
POWER
(W)
25
10
20
15
2
4
6
8
10
12
14
16
0
530
1% THD+N
10% THD+N
TOTAL OUTPUT POWER vs. LOAD RESISTANCE
VDD = 18V, f = 1kHz, SPREAD SPECTRUM
MAX9736
toc23
LOAD RESISTANCE (
Ω)
OUTPUT
POWER
(W)
25
20
15
10
5
15
20
25
30
0
530
10% THD+N
1% THD+N