bd9842fv ROHM Co. Ltd., bd9842fv Datasheet - Page 5

• Manufacturer Part Number: bd9842fv
• Description: Dual-output High Voltage High-frequency Step-down Switching Regulator Controller Type
• Manufacturer: ROHM Co. Ltd.

●Reference data
Fig.25 C5V saturation voltage
100
Fig.22 Output ON resistance L
90
80
70
60
50
40
30
20
10
0
40
35
30
25
20
15
10
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
1.4
5
0
C5V
Fig.19 Output Duty-VDT
characteristics (100kHz)
0
Ta=85°C
Ta=25°C
50
1.6
DT Input Voltage: VDT(V)
C5V
-0.05
VCC=5.0V
Ta=25°C
Ta=-40°C
(RONH)
VCC=6.0V
100
IC5V(mA)
VOUT(V)
C5V
-0.10
1.8
VCC=6.0V
Ta=25°C
150
C5V
-0.15
2
200
C5V
-0.20
250
2.2
100
5.5
5.4
5.3
5.2
5.1
5.0
4.9
4.8
4.7
4.6
4.5
90
80
70
60
50
40
30
20
10
Fig.26 C5V load regulation
0
Fig.23 STB flow-in current
800
700
600
500
400
300
200
100
1.4
0
0
Fig.20 Output Duty-VDT
characteristics (1.5MHz)
0
Ta=-40°C
5
5
1.6
DT Input Voltage: VDT(V)
5/15
10
VCC=6.0V
Ta=25°C
Ta=25°C
10
15
VCC=6.0V
Ta=25°C
IC5V(mA)
15
Ta=85°C
VCC=35V
VSTB(V)
20
1.8
20
25
25
30
30
2
35
35
40
40
2.2
voltage temperature characteristics
Fig.21 Output ON resistance H
70
65
60
55
50
45
40
35
30
Fig.24 Overcurrent detection
10
40
35
30
25
20
15
10
5
0
9
8
7
6
5
4
3
2
1
0
VCC
-50
Fig.27 C5V line regulation
0
-25
5
Ta=85°C
Ambient Temperature: Ta(°C)
VCC
Ta=25°C
-0.05
Ta=-40°C
Supply Voltage: VCC(V)
10
0
(RONH)
VOUT(V)
15
VCC=6V
25
VCC
-0.10
Ta=25°C
20
50
25
VCC=6.0V
Ta=25°C
VCC
75
-0.15
30
100
35
VCC
-0.20
125
40