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CS5127 Datasheet(PDF) 17 Page - Cherry Semiconductor Corporation

Part # CS5127
Description  Dual Output Nonsynchronous Buck Controller with Sync Function and Second Channel Enable
PDF  24 Pages
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Manufacturer  CHERRY [Cherry Semiconductor Corporation]
Direct Link  http://www.cherrycorp.com/
Logo CHERRY - Cherry Semiconductor Corporation

CS5127 Datasheet(HTML) 17 Page - Cherry Semiconductor Corporation

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Additional Application Circuits continued
17
+5V
3.3V
C1
680
mF
+
Q3
IRL3103S
C5
680
mF
C17
330PF
C12
CS5127
m1
SYNC
1
CT
2
RT
3
VFB1
4
COMP1
5
VFFB1
6
GATE1
7
LGND
8
VIN
16
VREF
15
ENABLE
14
VFB2
13
COMP2
12
VFFB2
11
GATE2
10
PGND
09
Q2
IRL3103S
Q1
FMMT2222ACT
R11
20K
C3
1
mF
R66
1M
R71
10K
C9
0.1
mF
C6
0.1
mF
R8
1.50K
R68
15k
C8
C13
680
mF
C14
330PF
+
C10
680
mF
R1
20K
D2
1N5821
L2
1
mF
R4
1.54K
R10
20K
L1
5
mH
R6
1K
C7
330PF
5
mF
D1
1N5821
C16
100
mF
R5
1.27K
+12V
+12V
+12V
+5V
C4
680
mF
680
mF
2.40K
R7
R9
2K
R3
18K
C15
100
mF
+
RDROOP
2.8V
+
R75
R76
1M
1M
C25
0.1
mF
R69
10K
Q4
2N2907
Q7
2N2907
LM2903
U4A
LM2903
U4B
R72
20K
R74
R73
1K
R70
20K
C11
680
mF
.008
R65
1M
R67
15k
8
C2
680
mF
R77
15K
R78
15K
+
RDROOP
.008
+
+
-
-
1K
C24
0.1
mF
Figure 17: 200kHz, V2ª, 5V/12V input, 2.8V@ 7A and 3.3V @ 7A outputs with current limit.
2.8V
3.3V
R4
1540
C7
330PF
C16
100
mF
C17
330pF
R7
2400
CS5127
m1
SYNC
1
CT
2
RT
3
VFB1
4
COMP1
5
VFFB1
6
GATE1
7
LGND
8
VIN
16
VREF
15
ENABLE
14
VFB2
13
COMP2
12
VFFB2
11
GATE2
10
PGND
09
D1
1N5821
Q2
IRL3103S
Q1
FMMT2222ACT
C2
680
mF
C13
680
mF
C6
0.1
mF
R9
2K
R3
18K
C15
100
mF
C14
330pF
+
C10
680
mF
L2
10
mH
R5
1270
R10
20K
L1 10
mH
R6
1K
R2
27K
Q3
IRL3103S
D2
1N5821
R8
1500
+
C1
680
mF
R1
20K
+
C12
680
mF
C11
680
mF
R11
20K
C9
0.1
mF
+5V
+12V
+
2.5V
+
-
1
8
3
2
C4
680
mF
+
C5
680
mF
+5V
C18
47
mF
Q4
IRL3103S
R18
2400
R17
2400
+
C8
1
mF
C3
1
mF
U2A
1/2 LM358
4
Figure 18: CS5127 12V, 5V input to 2.8V @7A and 3.3V @ 7A Switching Regulator with External 1A, 2.5V Linear Output for Vclock.



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