Datasheet

Typical Operating Characteristics (continued)
(MAX9736A, V
PVDD
= 12V, MOD = high, spread-spectrum modulation mode, V
GND
= V
PGND
= 0V, V
SHDN
= V
MUTE
= 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
2015105030
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
V
PVDD
= 24V,
FIXED FREQUENCY,
8Ω LOAD
EFFICIENCY
vs. TOTAL OUTPUT POWER
MAX9736 toc18
TOTAL OUTPUT POWER (W)
25
2015105030
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
V
PVDD
= 24V,
SPREAD SPECTRUM,
8Ω LOAD
EFFICIENCY
vs. TOTAL OUTPUT POWER
MAX9736 toc19
TOTAL OUTPUT POWER (W)
15105020
V
PVDD
= 12V,
FIXED FREQUENCY,
4Ω 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
2015105030
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
V
PVDD
= 12V,
SPREAD SPECTRUM,
4Ω LOAD
TOTAL OUTPUT POWER vs. V
DD
LOAD = 8Ω, f = 1kHz
MAX9736 toc21
SUPPLY VOLTAGE (V)
OUTPUT POWER (W)
2510 2015
5
10
15
20
25
30
35
40
0
530
1% THD+N
10% THD+N
TOTAL OUTPUT POWER vs. LOAD RESISTANCE
V
DD
= 12V, f = 1kHz, SPREAD SPECTRUM
MAX9736 toc22
LOAD RESISTANCE (Ω)
OUTPUT POWER (W)
2510 2015
2
4
6
8
10
12
14
16
0
530
1% THD+N
10% THD+N
TOTAL OUTPUT POWER vs. LOAD RESISTANCE
V
DD
= 18V, f = 1kHz, SPREAD SPECTRUM
MAX9736 toc23
LOAD RESISTANCE (Ω)
OUTPUT POWER (W)
25201510
10
5
15
20
25
30
0
530
10% THD+N
1% THD+N