LTC3714 Linear, LTC3714 Datasheet - Page 24

• Manufacturer Part Number: LTC3714
• Description: Wide Operating Range / Step-Down Controller with Internal Op Amp
• Manufacturer: Linear

APPLICATIO S I FOR ATIO
LTC3714
Solving for the required values of the resistors:
24
R
R
VP
VP
1
2
23
5
I
TH NOM
V I
k
(
5
–
V
5
TH NOM
V
V
(
)
U
OUT
V
IN
+
–
–
+
R
VP
)
C
OUT
U
R
BOLD LINES INDICATE HIGH CURRENT PATHS
C
VP
IN
0 55
.
5
V
V
5
M1
V
20 3
W
– .
5
.
0 55
V
k
V
Figure 10. LTC3714 Layout Diagram
185
D1 M2
20 3
U
k
.
k
C
C
SS
C1
C
B
D
B
R
C
The modified circuit is shown in Figure 9. Refer to Linear
Technology Design Solutions 10 for additional informa-
tion about output voltage positioning.
PC Board Layout Checklist
When laying out the printed circuit board, use the follow-
ing checklist to ensure proper operation of the controller.
10
11
12
13
14
1
2
3
4
5
6
7
8
9
C
C2
BG
PGND
SENSE
SW
TG
BOOST
VID0
VID1
VID2
RUN/SS
V
PGOOD
V
I
TH
ON
RNG
LTC3714
V
EXTV
C
INTV
OSENSE
OPOUT
OPV
SGND
VCC
VID4
VID3
OP
OP
FCB
V
V
I
ON
CC
CC
FB
IN
IN
+
–
28
27
26
25
24
23
22
21
20
19
18
17
16
15
R
R
C
F
ON
C
ION
F
C
3714 F10
FB
3714f