LTC3425 Linear Technology, LTC3425 Datasheet - Page 19

• Manufacturer Part Number: LTC3425
• Description: 5A 8MHz 4-Phase Synchronous Step-Up DC/DC Converter
• Manufacturer: Linear Technology

APPLICATIO S I FOR ATIO
Figure 8. Application Circuit for V
V
V
OUT
OUT
U
3.3V
3.3V
V
Figure 7. Application Circuit for V
V
C
C
C
C
C
C
C
IN
IN
IN
S
OUT
BULK
IN
OUT
BULK
R
12.1k
R
12.1k
: TAIYO YUDEN LMK107BJ474KA
: TAIYO YUDEN JMK107BJ225MA
: TAIYO YUDEN JMK107BJ225MA
T
T
: TAIYO YUDEN JMK212BJ475MG ( 4)
: TAIYO YUDEN JMK212BJ475MG ( 4)
: AVX TPSD157M006R0050
: AVX TPSD157M006R0050
U
R
75k
R
75k
LIM
LIM
C
2.2 F
C
2.2 F
IN
IN
SHDN
REFOUT
CCM
REFEN
SYNCIN
BURST
R
I
SHDN
REFOUT
CCM
REFEN
SYNCIN
BURST
R
I
LIM
LIM
T
T
SGND
SGND
V
V
W
IN
IN
GNDA
GNDA
SWA
SWA
OUT
L1
2.7 H
L1
2.7 H
LTC3425
LTC3425
> 4.3V When Inrush Limiting and Output Disconnect are Not Required
GNDB
GNDB
SWB
SWB
U
L2
2.7 H
L2
2.7 H
OUT
D1 TO D4: MOTOROLA MBR0520L
L1 TO L4: TDK RLF5018T-2R7M1R8
Q1: ZETEX ZXM61P02F
D1 TO D4: MOTOROLA MBR0520LT1
L1 TO L4: TDK RLF5018T-2R7M1R8
GNDC
GNDC
SWC
SWC
> 4.3V with Inrush Limiting and Output Disconnect
L3
2.7 H
L3
2.7 H
SYNCOUT
SYNCOUT
GNDD
GNDD
SWD
PGOOD
SWD
PGOOD
V
V
V
V
V
COMP
V
COMP
V
V
V
V
OUTD
OUTS
OUTA
OUTB
OUTC
OUTD
OUTS
OUTA
OUTB
OUTC
L4
2.7 H
SS
SS
FB
L4
2.7 H
FB
D1
D1
D2
D2
220pF
220pF
C
0.01 F
C
0.01 F
C2
SS
C2
SS
D3
D3
C
4.7 F
C
4.7 F
D4
D4
OUT
4
OUT
4
R3
100k
R3
100k
R2
309k
R1
100k
R2
309k
R1
100k
3425 F07
3425 F08
Q1
C
0.47 F
S
2
R4
100k
R4
100k
PGOOD
PGOOD
+
+
C
150 F
6.3V
C
150 F
6.3V
BULK
BULK
www.DataSheet4U.com
V
5V
2.5A
V
5V
2.5A
OUT
OUT
LTC3425
19
3425f