Diodes AP3988/89/90 - Manual (Page 2)

AP3988/89/90
Document number: DS36722 Rev. 3 - 2
2 of 13
www.diodes.com
March 2014
© Diodes Incorporated
AP3988/89/90
A Product Line of
Diodes Incorporated
N
E
W
P
R
O
D
U
C
T
Typical Applications Circuit
+ J1
AC 90-264V
D1 to D4
C2
Rf1
+
C1
D6
L1
T1
FB
C
VCC
CS
+
C3
U1
CPC C8
R5
C11
Np
Ns
Nfb
D5
C5 R6
Vo+
Vo-
C10
GND
D12
+
C12
R11
R12
C13
+
R10
R3
R8
R9 R7
L2
For AP3990 (12V/1A)
Item Function QTY Item Function QTY
C1,C2 10µF/400V, electrolytic 2 U1 AP3990, PDIP-7 1
C3 4.7µF/50V, electrolytic 1 Rf1 2A/250V, fuse 1
C5 1nF/250V, ceramic 1 R3 3.3M  /0.25W 1
C8 0.1µF, 0805 1 R5 3.9

, 0805 1
C10 1nF/250V
AC
, Y1 capacitor 1 R6 150k

, 0.25W 1
C11 1nF, 0805 1 R7 0.62

, 1206 1
C12, C13 470µF/16V 2 R8 31k

, 0805 1
D1 to D6 1N4007, rectifier diode 6 R9 13k  , 0805 1
D12 MBR3100, Schottky diode 1 R10 360

, 0805 1
L1 15mH, Common inductor, EE10 1 R11 27  , 0805 1
L2 10µH/1A, inductor, 0805 1 R12 1.2k

, 0805 1
– – – T1 EE20 core, PC40, transformer 1