BD5424EFS Datasheet, PDF (7/18 Pages) Rohm – 20W+20W Class-D Speaker Amplifier for Analog Input

BD5424EFS
●Electrical characteristic curves (Reference data) – Continued
(3)Under Stereo Operation（R_L=4Ω）
Technical Note
30
RL=4Ω
25 ^fin=1kHz _THD=10%
20
15
10
5
0
8
10 12
14 16
18
VCC (V)
Fig. 23 Output power - Power supply voltage
100
90
80
70
60
50
40
30
20
10
0
0
Vcc=10V
RL=4Ω
fin=1kHz
5
10
15
20
OUTPUT POWER (W/ch)
Fig. 24 Efficiency - Output power
100
90
80
70
60
50
40
30
20
Vcc=18V
RL=4Ω
10
fin=1kHz
0
0 5 10 15 20 25 30 35 40
OUTPUT POWER (W/ch)
Fig. 26 Efficiency - Output power
100
90
80
70
60
50
40
30
20
10
0
0
Vcc=12V
RL=4Ω
fin=1kHz
5
10
15
20
OUTPUT POWER (W/ch)
Fig. 25 Efficiency - Output power
6
5
Vcc=12V
4 _Vcc=10V
3
Vcc=18V
2
1
RL=4Ω
fin=1kHz
0
0 10 20 30 40 50 60 70 80
TOTAL OUTPUT POWER (W)
Fig. 27 Current consumption - Output power
Dotted lines of the graphs indicate continuous output power to be obtained on musical signal source or by installing
additional heat sinks.
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2009.06 - Rev.A