MIC4043BM4 View Datasheet(PDF) - Micrel
Part Name
Description
Manufacturer
MIC4043BM4 Datasheet PDF : 12 Pages
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MIC4043
Off-Line 5V/2A Power Supply
85 to 264Vac
50/60Hz
Hot
F1
Ground
1A
Neutral
L1
20mH
C2
2200pF
400V
U2a
2501
C10
0.1µF
50/63V
U1
MIC38HC43BN
R5 1 COMP
1.21k 1%
VREF 8
2 FB
R6
VDD 7
1.21k
1%
3 ISNS
VOUT 6
4 RT/CT GND 5
R7
14k 1%
C6
470pF
63V
R1
C7 1k 1%
470pF
63V
U2b
2501
R10
72k
1%
BR1
DBR1
U3
MIC4043
C1
0.1µF
IN SNK
250V
C4
GND FB
47µF
R11
400V
33k
C3
2200pF
400V
1000pF
1%
249Ω
R2
332k
1%
R3
332k
1%
R4
34Ω
1%
D2 C5
18V 0.1µF
50/
63V
1
80T
2
D1
1N4448
4
C8 10T
22µF
25V
3
D4
12CTQ045
L2
7
5µH
3T
C11
1200µF
6
10V
T1
C12
220µF
10V
VTRIP
=
1.245V
R2
R1
+
1
R13
10Ω 1%
Q1
IRFIBE30G
R8
1.9Ω
1/4W
1%
C9
100pF
1kV
R9
470Ω
1/2W
D3
UF4005
VOUT
+5.0V/2A
R14
200Ω
1%
Return
Figure 6. Off-Line 5V/2A Power Supply
Micrel
Figure 6a. 5V/1A Output Bode Plot
(θ margin = 67°)
Figure 6b. 5V/2A Output Bode Plot
(θ margin = 61°)
MIC4043
10
November 2000
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