FA13842, 13843, 13844, 13845
■ Application circuit
L1
3.3µH
YG902C
DB
D6
T1
4700µF
2
16V
~
+
0~4A
R27
100kΩ
C16
+
C1
AC80~264V
0.022µF
400V/220µF
C17
+
C7 +
C18+
1000µF
~
D9
ERA22-10
R1
560kΩ
GND
C15
470pF
MOSFET
2SK2101
R28
1kΩ
R20
1.2kΩ
D10
ERA22-10
R21
R32
2.2kΩ 10kΩ
R29
4.7kΩ
Rs
0.33Ω
PC2
R30
33Ω
R22 560Ω
R31
100Ω
D11
ERA91-02
C12
0.1µF
IC
C2
VR1
5k
FA13842
22µF
VCC7
R
T
+
VREF
8.2kΩ
UVLO
VCC
ENB
5VREF
2.5V
8
D1
ERA91-02
30V
6OUT
OUTPUT
ENB
UVLO
COMP1
GND
5
RT/CT
OSC
1V
4
CT
C11
1000pF
2R
1R
FB
2200pF
2
S
Q
PC2
FF
R19
QB
ISNS
R
1kΩ
3
R18
1kΩ
C14
0.1µF
C10
100pF
Parts tolerances characteristics are not defined in the circuit design
sample shown above. When designing an actual circuit for a
product, you must determine parts tolerances and characteristics for
safe and economical operation.
15
FUJI [ FUJI ELECTRIC ]
