Datasheet
LTC3418
16
3418fb
TYPICAL APPLICATIONS
3.3V, 8A Step-Down Regulator Synchronized to 1.25MHz
PV
IN
PV
IN
PV
IN
PV
IN
PV
IN
PV
IN
PV
IN
PV
IN
SV
IN
TRACK
PGOOD
RUN/SS
I
TH
R
T
SGND
PGND
PGND
PGND
SYNC/MODE
1
2
11
12
20
21
30
31
25
16
38
37
36
34
33
32
19
18
17
3
4
9
10
22
23
28
29
24
35
5
7
26
6
8
13
14
15
27
SW
SW
SW
SW
SW
SW
SW
SW
V
FB
V
REF
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
LTC3418
L1
0.33μH
C1
1000pF
X7R
C
OUT
100μF
×3
C
IN
100μF
×2
C
SVIN
1μF
X7R
V
IN
5V
V
OUT
3.3V
8A
R1
6.34k
R
PG
100k
R
SS
2.2M
C
SS
1000pF
X7R
C
ITH
2200pF
X7R
R
ITH
2k
R
SVIN
100Ω
R
OSC
69.8k
R2
2k
C1
47pF
X7R
1.25MHz CLOCK
C
REF
2.2μF
X7R
V
REF
3418 TA02
C
IN
, C
OUT
: TDK C3225X5R0J107M
L1: VISHAY DALE IHLP-2525CZ-01
PV
IN
PV
IN
PV
IN
PV
IN
PV
IN
PV
IN
PV
IN
PV
IN
SV
IN
TRACK
SYNC/MODE
PGOOD
RUN/SS
I
TH
R
T
SGND
PGND
PGND
PGND
1
2
11
12
20
21
30
31
25
16
38
37
36
34
33
32
19
18
17
3
4
9
10
22
23
28
29
24
35
27
5
7
26
6
8
14
15
13
SW
SW
SW
SW
SW
SW
SW
SW
V
FB
V
REF
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
LTC3418
L1
0.2μH
C1
1000pF
X7R
C
OUT
100μF
×3
C
IN
100μF
×4
V
IN
3.3V
V
OUT
1.2V
8A
R1
1k
R
PG
100k
R
SS
2.2M
C
SS
1000pF
X7R
C
ITH
2200pF
X7R
R
ITH
4.99k
R
SVIN
100Ω
R
OSC
30.1k
R2
2k
C1
47pF
X7R
C
REF
2.2μF
X7R
C
SVIN
1μF
X7R
V
REF
3418 TA03
C
IN
, C
OUT
: AVX 12106D107MAT
L1: COOPER FP3-R20
1.2V, 8A Step-Down Regulator at 2MHz, Forced Continuous Mode