LTC3785 LINER [Linear Technology], LTC3785 Datasheet - Page 25

• Manufacturer Part Number: LTC3785
• Description: High Efficiency, Synchronous, 4-Switch Buck-Boost Controller
• Manufacturer: LINER [Linear Technology]

applicaTions inForMaTion
3300pF
6.8nF
C
C
20k
R1
SS
C1
1000pF
121k
C
C2
ON/OFF
280k
R2
68k
R
V
OUT
C
V
IN
V
OUT
2.2µF
10
11
12
13
14
1
2
3
4
5
6
7
8
9
V
SS
SENSE
SENSE
I
SGND
MODE/PLLIN
FREQ
RUN
V
V
I
I
I
TH
LIM
OSENSE
OSENSE
FB
INSNS
OUTSNS
PGND
SGND
PGOOD
+
–
V
LTC3789
+
–
PULLUP
Figure 13. LTC3789 12V/5A, Buck-Boost Regulator
BOOST1
BOOST2
EXTV
INTV
PGND
TRIM
SW1
SW2
BG1
BG2
TG1
TG2
V
CC
CC
IN
Figure 14. Sense Lines Layout
100
1k
27
26
25
24
23
22
21
20
19
18
17
16
15
INTV
V
0.22µF
OUT
100
C
CC
1k
A
D
DFLS160
D
DFLS160
A
B
10m
0.22µF
C
C
C
VCC
F
B
1µF
10
4.7µF
R
C
R
3789 F14
Q
Si7884DP
Q
Si7884DP
Q
Si7884DP
Q
Si7884DP
A
C
D
B
D2
B240A
D1
B240A
6.8µH
L
LTC3789
10m
C
47µF
C
2.2µF
V
5V TO 38V
3789 F13
IN
OUT
IN
+
MAX
25
330µF
V
12V, 5A
OUT
3789f