MB3769A
■ SHORT PROTECTION CIRCUIT
The system power can be shut down to protect the output against intermittent short-circuits or continuous overloads. This
protection circuit can be configured using the OVP input as shown in Figure 14.
Fig. 14 -Case I. (Over Protection Input)
Primary Mode
V0
(5V output)
15 kΩ
IN-B
PC1
OUT-B
8
PC2
3
4
8.2 kΩ
IN-A
500 Ω
HYS-A
MB3761
1
6
9
14
13
5
500 Ω
6.8 kΩ
MB3769A
20 kΩ
PC2
7
1 µF
10 kΩ
100 kΩ
PC1
Fig. 15 -Case II. (Over Protection Input)
Secondly Mode
V0 (5V output)
14
VREF
MB3769A
20 kΩ
15 kΩ
8
13
IN-B
IN-A
OUT-B
HYS-A
6
OVP
3
1
MB3761
8.2 kΩ
6.8 kΩ
2
1 µF
5
200 kΩ
15
FUJITSU [ FUJITSU ]
