MB3800 Fujitsu Microelectronics, Inc., MB3800 Datasheet - Page 10

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

10
MB3800
(Continued)
V
I
OUT
OUT
(mA)
–50
100
(V)
50
80
60
40
20
6
4
2
0
0
10 K
0
Note: The OFF delay time of V
0
MB3800
Oscillation frequency vs. Maximum duty cycle
Output pin voltage and current waveforms
4
2 V
10 mV
characteristics of the external transistor.
390
0.4
Oscillation frequency f
Measurement circuit diagram
5
V
(reference data)
CC
I
OUT
100 K
0.8
22 H
1.2
OUT
V
OUT
OSC
V
C
T
200 ns
depends on the
a
10 F
CC
T
(Hz)
= +25 C
= 270 pF
= 2 V
1.6
1 M
2.0
–IN
18 k
2 k
V
C
R
( s)
CC
t
T
T
= 270 pF
= 1.0 k
(5 V)
= 2 V