Datasheet

LTC3707-SYNC
30
3707sfa
TYPICAL APPLICATIONS
Figure 13. LTC3707-SYNC 5V/5A, 3.3V/5A Regulator with External Frequency Synchronization
0.1μF
4.7μF
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
+
2s
10μF
35V
M1A M1B
M2A M2B
1μF
10V
0.1μF
10Ω
0.007Ω
0.007Ω
f
SYNC
3.3V
0.1μF
10k
105k
1%
68pF
6.34k
68pF
5.1k
1000pF
1000pF
0.01μF
1000pF
1000pF
1000pF
0.1μF
20k
1%
63.4k
1%
20k
1%
RUN/SS1
SENSE1
+
SENSE1
–
V
OSENSE1
PLLFLTR
PLLIN
FCB
I
TH1
SGND
3.3V
OUT
I
TH2
V
OSENSE2
SENSE2
–
SENSE2
+
PGOOD
TG1
SW1
BOOST1
V
IN
BG1
EXTV
CC
INTV
CC
PGND
BG2
BOOST2
SW2
TG2
RUN/SS2
LTC3707-SYNC
L1
4.3μH
L2
4.3μH
150μF
6.3V
180μF, 4V
GND
V
OUT2
3.3V/5A
V
OUT1
5V/5A
V
IN
7V TO
24V
3707 F13
+ +
V
IN
: 7V TO 24V
V
OUT
: 5V/5A, 3.3V/5A
SWITCHING FREQUENCY = 300kHz
MI, M2: FAIRCHILD FDS6982S
(INTERNAL SCHOTTKY)
L1, L2: 8mH SUMIDA CDEP105-4R3MC-88
OUTPUT CAPACITORS: PANASONIC SP SERIES
68pF
68pF
0.1μF
CMDSH-3TR
CMDSH-3TR
PGOOD
V
PULL-UP
(<7V)