mb3778pfv Fujitsu Microelectronics, Inc., mb3778pfv Datasheet - Page 20

• Manufacturer Part Number: mb3778pfv
• Description: Switching Regulator Controller
• Manufacturer: Fujitsu Microelectronics, Inc.

20
MB3778
100 k
10
10
10 k
Temperature vs. Frequency stability
1 M
0
1 k
Control voltage vs. Reference voltage
1 k
5.0
2.5
40
0
0
Oscillation frequency
Timing resistor vs.
20
C
T
5 k 10 k
Timing resistor R
1
Control voltage V
15000 pF
0
Temperature Ta ( C)
20
2
50 k100 k
40
T
( )
3
CTL
60
C
(V)
V
Ta
V
Ta
C
T
CC
CC
T
V
C
R
80
4
1500 pF
CC
T
T
500 k
150 pF
25 C
6 V
25 C
6 V
330 pF
15 k
100
6 V
5
120
100
10
1
100
500
250
V
R
Ta
80
60
40
20
CC
0
T
0
0
15 k
10
6 V
25 C
Triangular waveform cycle vs.
2
5 k
Oscillation frequency vs. Duty
4
Control input current
10 k
Timing capacitor
Timing capacitor C
Control voltage I
Oscillation frequency (Hz)
8
10
3
50 k 100 k
12
CTL
T
V
Ta
(pF)
(V)
CC
10
16
4
6 V
25 C
V
C
R
Ta
CC
T
T
20
500 k 1 M
330 pF
15 k
(Continued)
6 V
25 C
10
5