BD28623MUV Datasheet, PDF (9/53 Pages) Rohm – Class D Speaker Amplifier for Digital Input

BD28623MUV
Typical Performance Curves – continued (2/11)
(Unless otherwise specified, Ta=25°C, VCC=18V, f=1kHz, RL=8Ω, RSTX=3.3V, MUTEX=3.3V, fS=48kHz, MCLK=256fS,
Gain=20dB, ROHM 4-layer Board)
100
GAIN=H
90
VCC=12V
80
70
RL=4Ω
60
50
40
30
20
10
0
0
5
10
15
20
Output Power [W/ch]
Figure 9. Efficiency vs Output Power
(4Ω)
3.5
GAIN=H
VCC=12V
3.0
2.5
RL=4Ω
2.0
1.5
1.0
0.5
0.0
0
5
10
15
20
Output Power [W/ch]
Figure 10. Circuit Current vs Output Power
(4Ω)
Speaker output
Speaker output
MUTEX
Figure 11. Waveform of Soft Start
MUTEX
Figure 12. Waveform of Soft Mute
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TSZ02201-0C1C0E900290-1-2
20.May.2016 Rev.002