Datasheet

LTC3851-1
25
38511fa
TYPICAL APPLICATIONS
Figure 12. 1.8V/5A Converter from Design Example with Pulse Skip Operation
Figure 11. High Effi ciency 3.3V/15A Step-Down Converter
MODE/PLLIN
FREQ/PLLFLTR
RUN
TK/SS
I
TH
V
FB
SENSE
–
SENSE
+
V
IN
TG
BOOST
SW
INTV
CC
BG
GND
PGOOD
LTC3851-1
C
SS
0.1µF
C5
0.047µF
C
B
0.1µF
C
C2
330pF
C
C
2200pF
R
FREQ
82.5k
R
C
15k
30.1k
V
OUT
3.3V
15A
C15
47pF
4.7µF
V
PULL-UP
+
C
OUT
330µF
s2
C
IN
22µF
M1
HAT2170H
M2
HAT2170H
C
OUT
: SANYO 6TPE330MIL
C
IN
: SANYO 63HVH22M
L1: VISHAY IHLP5050-EZERR68M01
38511 F11
D
B
CMDSH05-4
R2
154k
1%
R1
48.7k
1%
V
IN
4.5V TO 32V
L1
0.68µH
R27
3.01k
R
PG
C20
0.1µF
+
MODE/PLLIN
FREQ/PLLFLTR
RUN
TK/SS
I
TH
V
FB
SENSE
–
SENSE
+
V
IN
TG
BOOST
SW
INTV
CC
BG
GND
PGOOD
LTC3851-1
C
SS
0.1µF
C
B
0.1µF
C
C2
220pF
C
C
470pF
0.1µF
R
FREQ
160k
R
PG
R
C
33k
R
SENSE
0.01
V
OUT
1.8V
5A
1000pF
4.7µF
V
PULL-UP
+
C
OUT
150µF
6.3V
s2
PANASONIC SP
C
IN
22µF
25V
M1
FDS6982S
M2
FDS6982S
C
OUT
: PANASONIC EEFUEOG151R
C
IN
: MARCON THCR70LE1H226ZT
L1: PANASONIC ETQP6F3R3HFA
R
SENSE
: IRC LR 2010-01-R010F
38511 TA02
D
B
CMDSH-3
R2
32.4k
1%
R1
25.5k
1%
V
IN
4.5V TO 22V
L1
3.3µH
+