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Part Name
Description
CS5127 View Datasheet(PDF) - Cherry semiconductor
Part Name
Description
MFG CO.
CS5127
Dual Output Nonsynchronous Buck Controller with Sync Function and Second Channel Enable
Cherry semiconductor
'CS5127' PDF : 24 Pages
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Additional Application Circuits continued
+5V
C1
C2
680
m
F 680
m
F
+
+12V
C3
+
1UF
C4 C5 +5V
680
m
F 680
m
F
+
2.8V
R4
1540
R5
1270
R1
3.3K
R2
100K
R3
C6
24K
390pF
C7
7pF
C10
680
m
F
Q1
IRL3103S
+
L1 5
m
H
C11
680
m
F
R6
2K
D1
1N5821
R7
C14
R65
10
0.2
m
F
18K
m
1
1
CS5127
SYNC
V
IN
16
2
CT
V
REF
15
3
RT
14
ENABLE
4
V
FB1
V
FB2
13
5
COMP1
6
V
FFB1
7
GATE1
8
LGND
12
COMP2
V
FFB2
11
10
GATE2
09
PGND
C50
0.22
m
F
Q4
2N3906
Q7
2N3906
C52
7pF
C16
0.22
m
F
C15
0.01
m
F
C24
0.01
m
F
+
C8
1
m
F
Q2
IRL3103S
L2
C12
C13
680UF 680
m
F
5
m
H
+
D2
1N5821
R10
2K
R11
R66
2.2K
10
C17
0.2
m
F
R48
100K
C15
0.1
m
F
3.3V
R7
2400
R8
1500
Figure 15: CS5127 12V, 5V input to 2.8V @ 7A and 3.3V @ 7A Voltage Mode Control Application Circuit with External Soft Start.
+12V
C1
680
m
F
C2
680
m
F
+
Q1
FMMT2222ACT
+
C18
0.1
m
F
50V
R1
20K
C6
0.1
m
F
2.8V
C7
330PF
C10
680
m
F
+
R4
1540
L1 5
m
H
C11
680
m
F
R2
27k
Q2
IRL3103S
D1
1N5821
D3
1N5818
D4
1N5818
m
1
1
CS5127
SYNC
V
IN
16
2
CT
V
REF
15
3
RT
ENABLE
14
4
V
FB1
V
FB2
13
5
COMP1 COMP2
12
6
V
FFB1
7
GATE1
V
FFB2
11
GATE2
10
8
LGND
PGND
09
R5
1270
R10
20K
R6
1K
C14
330PF
C15
100
m
F
Figure 16: CS5127 12V only to 2.8V @ 7A and 3.3V @ 7A Application Circuit.
R12
30
C3
+
C8
10
m
F
1
m
F
Q3
IRL3103S
D2
1N5821
C4 C5
680
m
F 680
m
F
+
D5
1N5248
C9
0.1
m
F
L2
5
m
H
C12
680
m
F
C13
680
m
F
+
3.3V
R7
2400
R8
R9
1500
2K
R11
R3
C16
C17
20K
100
m
F
330PF
18K
16
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