bd4912 ROHM Co. Ltd., bd4912 Datasheet - Page 4

• Manufacturer Part Number: bd4912
• Description: Dmos System Power Supply Ics With Low Current Consumption Now Available
• Manufacturer: ROHM Co. Ltd.

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