L4990 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'L4990' PDF : 24 Pages View PDF
L4990 - L4990A
Table 3. Components List of the Fig. 30 AC-DC adaptor electric schematic.
Component
Resistors
Capacitors
Transformer
Transistors
Diodes
Fuse
NTC
Reference
R1
R2
R3, R14
R4
R5
R6
R7
R8, R9
R10
R11
R12, R13
R15
R16
R17
R19
R20, R21
R22
R23
R24
C1
C2
C3
C4
C5
C6, C15
C7, C14
C8
C9
C10
C11
C12
C13
T1
Q1
Q2
B1
D1
D2, D3
D4
Fuse
NTC
Value
1.6kΩ
9.1kΩ
10Ω
360kΩ
27kΩ
200kΩ
4.7Ω
4.7kΩ
5.6kΩ
1Ω
24kΩ
330Ω
-
390Ω
100kΩ
470kΩ
200Ω
2kΩ
1kΩ
100µF
330µF
47µF
1µF
1nF
10nF
330pF
330pF
100nF
220nF
100pF
-
4.7nF
380µH
STP5NA80
2N2222
DF04M
STPS20100CT
1N4148
BYT11-600
T2A250V
-
Description
2%, 1/8W
2%, 1/8W
5%, 1/8W
2%, 1/8W
2%, 1/8W
2%, 1/8W
2%, 1/8W
2%, 1/8W
2%, 1/8W
2%, 1/2W, metallic film (low inductance)
2%, 1/2W
5%, 1/8W
Not used
5%,1W, 2 paralleled resistors (not used)
5%, 1W
2%, 1/8W
5%, 1/8W
2%, 1/8W
5%, 1/8W
400V, NCC-SMH or equiv.
25V, NCC-LXF or equiv., 3 paralleled capacitors
25V, electrolytic
10V, electrolytic
J precision
160V, polypropilene
ceramic
Not used
630V
Core: EFD25, Philips, 3F3 ferrite (or equivalent)
Primary: 46 T, litz wire 20 x 0.1, interleaved assembly
Secondary: 6 T, 4 paralleled litz wire 20 x 0.1
Auxiliary: 7 T (evenly spaced), ∅ 0.2 mm GAP ~ 0.7mm
ST, TO220 package
ST (or equivalent)
GI (or equivalent)
ST, Shottky, TO220 package
ST (or equivalent)
ST, F126 package
ELU (or equivalent)
Not used (see warning)
16/24
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