MB3769A Datasheet, PDF (15/26 Pages) Fujitsu Component Limited. – SWITCHING REGULATOR CONTROLLER

MB3769A
s 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
9
MB3769A
14
13
7
20 kΩ
15 kΩ
IN-B
8.2 kΩ
IN-A
6.8 kΩ
8
3
4
MB3761
1
6
5
PC1
OUT-B
500 Ω
HYS-A
500 Ω
PC2
PC2
1 µF
PC1
10 kΩ
100 kΩ
V0
(5V output)
Fig. 15 -Case II. (Over Protection Input)
Secondly Mode
V0 (5V output)
14
VREF
15 kΩ
8.2 kΩ
6.8 kΩ
20 kΩ
MB3769A
8
IN-B ₃
6 ^OUT-B
13 _OVP
IN-A
MB3761
1
2
5
HYS-A
1 µF
200 kΩ
15