MB3769A Datasheet, PDF (14/26 Pages) Fujitsu Component Limited. – SWITCHING REGULATOR CONTROLLER

MB3769A
100 VAC
Fig. 12 -Primary Control
R
1 +IN(OP) +IN(C) ¹⁶
2 -IN(OP) ^{-IN(C) 15}
47 kΩ
22
kΩ _{4.7 µF}
3 ^FB
4 DTC
VREF ₁₄
OVP 13
5 _CT
6 _RT
7 _GND
8
22
kΩ _{680 18}
pF kΩ
VCC ¹²
VZ ¹¹
VH ¹⁰
* 22
9
Ω
10 kΩ
15
kΩ
-
-
+
+
*:The resistance (22 Ω)
as an output current
limiter at pin 9 is re-
quired when driving
the FET which is more
than 1000 pF (CGS).
15 V
0V
Secondly power supply
Fig. 13 -Secondly Control
12 V
43 39
kΩ kΩ 1000
10 27 ^pF
kΩ kΩ
5.1 kΩ
1 +IN(OP) +IN(C) 16
51 ^{2 -IN(OP) -IN(C) 15}
kΩ _{3 FB}
VREF ₁₄
4 DTC OVP 13
5 _CT
6 _RT
VCC 12
VZ 11
7 _GND
VH 10
8 _VL
OUT ⁹
10
680 ₁₈
kΩ
pF _kΩ
14