MB3800 Fujitsu Microelectronics, Inc., MB3800 Datasheet - Page 9

• Manufacturer Part Number: MB3800
• Description: Switching Regulator Controller (low Voltage)
• Manufacturer: Fujitsu Microelectronics, Inc.

(Continued)
–50
–40
–30
–20
–10
–10
–15
5.0
4.0
3.0
2.0
1.0
10
–5
0
0
5
0
0
0
0
BR/CTL pin current vs. Output source current
Supply voltage vs. Frequency variation ratio
BR/CTL pin current vs. Supply current
2
–0.4
–20
BR/CTL pin current I
BR/CTL pin current I
4
Supply voltage V
–0.8
–40
6
8
–1.2
–60
10
CC
BR
BR
V
T
C
R
T
V
V
T
(V)
(mA)
a
( A)
a
a
CC
T
T
CC
OUT
= +25 C
12
= +25 C
= +25 C
= 270 pF
= 3.0 k
–1.6
= 2 V
–80
= 2 V
= 0.9 V
14
–100
–2.0
16
500 k
200 k
100 k
50 k
20 k
10 k
500
400
300
200
100
1 M
–10
–15
5 k
2 k
10
–5
0
5
0
–40
0
Ambient temperature vs. Frequency variation ratio
BR/CTL pin current vs. BR/CTL pin voltage
Timing resistor vs. Oscillation frequency
C
C
C
–20
T
T
T
1 k
= 100 pF
= 1000 pF
= 10000 pF
–0.4
Ambient temperature T
BR/CTL pin current I
Timing resistor R
0
2 k
–0.8
20
5 k
40
–1.2
T
( )
BR
V
T
V
C
R
V
T
a
60
(mA)
a
CC
CC
a
T
T
CC
( C)
MB3800
= +25 C
10 k
= +25 C
= 270 pF
= 3.0 k
–1.6
= 2 V
= 2 V
= 2 V
80
(Continued)
–2.0
20 k
100
9