bd9845fv ROHM Co. Ltd., bd9845fv Datasheet - Page 3

• Manufacturer Part Number: bd9845fv
• Description: Single-output High Voltage High-frequency Step-down Switching Regulator Controller Type
• Manufacturer: ROHM Co. Ltd.

●Reference data
* Radiation resistance design is not applied.
Fig.1 Standby current temperature
[Standby changeover unit]
STB flow-in current
Standby mode setting
range
Active (master) mode
setting range
SEL flow-in current
Master
Slave mode setting range
[Device overall]
Standby current
Average power
consumption
10
2.520
2.515
2.510
2.505
2.500
2.495
2.490
2.485
2.480
9
8
7
6
5
4
3
2
1
0
Fig.4 VREF supply voltage
-50
0
mode setting range
-25
Ambient Temperature: Ta(°C)
5
characteristics
characteristics
Supply Voltage: VCC(V)
0
10
VCC=6V
15
25
Ta=25°C
20
50
25
75
30
100
35
125
40
V
V
V
V
I
I
I
I
STBH
SELH
CCS
CCA
STB
STBL
SELL
SEL
3.0
2.0
－
8
7
6
5
4
3
2
1
0
Fig.5 VREF current capability
0
0
1
-
-
2.520
2.515
2.510
2.505
2.500
2.495
2.490
2.485
2.480
0
Fig.2 Circuit current in
0
5
Reference Output Current: IREF(mA)
0.5 1
10
2.4
Supply Voltage: VCC(V)
55
15
operation
0
-
-
-
-
3/15
1.5 2
15
Ta=25°C
20
Ta=25°C
VCC=6V
2.5 3
V
V
100
0.5
0.5
30
CC
CC
1
4
25
3.5 4 4.5 5
30
35
μA
μA
μA
mA
V
V
V
V
40
STB=6V
SEL=2.5V
STB=0 V
INV=0 V, FB=H, DT=1.75 V
Fig.3 Circuit current temperature
7
8
6
5
4
3
2
1
0
2.520
2.515
2.510
2.505
2.500
2.495
2.490
2.485
2.480
-50
characteristics in operation
Fig.6 VREF temperature
-50
-25
Ambient Temperature: Ta(°C)
-25
characteristics
Ambient Temperature: Ta(°C)
0
0
VCC=6V
25
VCC=6V
25
50
50
75
75
100
100
125
125