MB3825A Fujitsu Microelectronics, Inc., MB3825A Datasheet - Page 15

• Manufacturer Part Number: MB3825A
• Description: 6-ch DC/DC Converter ic With Synchronous Rectifier
• Manufacturer: Fujitsu Microelectronics, Inc.

500
400
300
200
100
100
Triangular wave time vs. timing capacitor
10
15
10
10
15
0
1
0
10
5
0
5
0
50
Ta
V
R
Ta
V
V
V
C
R
CC
T
CC
CTL1
Triangular wave frequency stability
CC
T
T
Control current vs. control voltage
39 k
100 pF
39 k
25 C
Ambient temperature Ta ( C)
6 V
25 C
6 V
25
6.0 V
Timing capacitor C
6 V
vs. ambient temperature
Control voltage V
5
10
0
2
25
10
10
CTL2
50
T
3
(pF)
15
(V)
75
10
100
20
4
100 k
10 M
10 k
Triangular wave upper and lower limit voltage
1 M
Triangular wave upper and lower limit voltage
1.6
1.4
1.2
1.0
0.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
1 k
1 k
10
50
Oscillator frequency vs. timing resistor
Ta
V
R
V
R
C
CC
C
T
CC
T
T
C
C
C
T
C
T
T
T
Ambient temperature Ta ( C)
39 k
T
39 k
100 pF
25 C
6.0 V
25
1500 pF
6.0 V
300 pF
100 pF
150 pF
vs. ambient temperature
47 pF
Timing capacitor C
vs. timing capacitor
Timing resistor R
10
10 k
0
2
25
100 k
10
50
MB3825A
3
T
T
( )
Ta
V
(pF)
CC
75
upper
lower
25 C
6.0 V
(Continued)
Upper
Lower
1 M
100
10
4
15