BM28723AMUV
Typical Performance Curves - continued
Unless otherwise specified Ta=25°C, VCCP1, VCCP2=18V, VDVDD=3.3V, VRSTX=3.3V, VMUTEX=3.3V, f=1kHz, fs=48kHz, RL=8Ω,
DSP: Through, Driver Gain (GDRV) =26dB
Measured by ROHM designed 4 layers board(Note 12)
RL=8Ω
Po=1W
RL=8Ω
Po=1W
20ms/div
2ms/div
Speaker output
Speaker output
MUTEX(2V/div)
MUTEX(2V/div)
Figure 8. Waveform at soft start
Figure 9. Waveform at soft mute
2.5
2.0
1.5
1.0
0.5
0.0
25
20
15
10
5
RL=8Ω
RL=8Ω
VCCP1,VCCP2=18V
VCCP1,VCCP2=12V
THD+N=10%
THD+N=1%
VCCP1,VCCP2=24V
0
10
12
14
16
18
20
22
24
0
5
10
15
20
Supply Voltage: VCCP1,VCCP2 [V]
Output Power [W/CH]
Figure 10. Output Power vs Supply Voltage
Figure 11. Circuit Current vs Output Power
Caution 1: Dotted line means exceeding maximum junction temperature.In that case heat dissipation measures such as the heat sink are necessary separately.
Caution 2: Use this LSI in 20W or less output power even with heat dissipation measures.
(Note 12) 100mmx100mmx1.6mm FR4 4-layer glass epoxy board Cu Thickness 35μm/70μm/70μm/35μm For Application Evaluation Board
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TSZ02201-0C1C0E900720-1-2
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TSZ22111 • 15 • 001
31.Aug.2018 Rev.001