BD4912 查看數據表（PDF） - ROHM Semiconductor
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BD4912 Datasheet PDF : 17 Pages
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z Reference data (Unless otherwise specified, VCC1= VCC2 = 14.4 V)
1000
800
600
From the left,
Ta=85℃
400
Ta=25℃
Ta=-40℃
200
0
0
10
20
30
40
SUPPLY VOLTAGE:Vcc1,2 [V]
Fig.2 Standby Circuit Current
6
5
4
From the left,
3
Ta=85℃
Ta=25℃
Ta=-40℃
2
1
0
0
10
20
30
40
SUPPLY VOLTAGE:Vcc1,2 [V]
Fig.3 VDD Line Regulation
(IO = No load)
6
4
From the left,
Ta=85℃
Ta=25℃
Ta=-40℃
2
0
50
100
150
200
AMBIENT TEMPERATURE:Ta [℃]
Fig.4 VDD Load Regulation
0.8
Ta=85℃
0.6
Ta=25℃
0.4
0.2
Ta=-40℃
0
0
100
200
300
400
OUTPUT CURRENT:Io [mA]
Fig.5 VDD Dropout Voltage
(VCC1 = VCC2 = 4.8 V)
10
8
6
From the left,
Ta=85℃
4
Ta=25℃
Ta=-40℃
2
0
0
10
20
30
40
SUPPLY VOLTAGE:Vcc1,2 [V]
Fig.8 AUDIO Line Regulation
(IO = No load)
80
5.2
60
5.1
40
5.0
20 From the left,
Ta=85℃
Ta=25℃
Ta=-40℃
0
10
100
1000
10000
FREQUENCY:f [Hz]
100000
Fig.6 VDD Ripple Rejection Ratio
(IO = 300 mA)
4.9
4.8
-60
-20
20
60
100
AMBIENT TEMPERATURE:Ta [℃]
Fig.7 VDD Output Voltage vs Temperature
10
8
Ta=-40℃
6
Ta=25℃
4
Ta=85℃
2
0
0
100 200 300 400 500
OUTPUT CURRENT:Io [mA]
Fig.9 AUDIO Load Regulation
0.5
0.4
Ta=85℃
0.3
Ta=25℃
0.2
0.1
Ta=-40℃
0
0
50
100
150
200
OUTPUT CURRENT:Io [mA]
Fig.10 AUDIO Dropout Voltage
(VCC1 = VCC2 = 7.8 V)
4/16
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