LTC3832-1 Linear Technology, LTC3832-1 Datasheet - Page 19

• Manufacturer Part Number: LTC3832-1
• Description: High Power Step-Down Synchronous DC/DC Controllers for Low Voltage Operation
• Manufacturer: Linear Technology

APPLICATIO S I FOR ATIO
+
4.7 F
U
100
C1
180pF
U
1 F
OPTIONAL
10 F
D
12V
1N5242
SHDN
Z
R
18k
C
NC
C
1500pF
0.01 F
+
C
W
Figure 12. Typical 3.3V to 2.5V, 14A Application
V
SS
FREQSET
SHDN
COMP
PV
CC
100
90
80
70
40
30
20
10
60
50
CC2
0
LTC3832
SENSE
1N5817
0
T
V
V
REFER TO FIGURE 12
A
IN
OUT
1 2 3
SENSE
U
PV
= 25 C
–
= 3.3V
Efficiency vs Load Current
PGND
I
GND
= 2.5V
CC1
MAX
1N5817
G1
I
G2
FB
FB
+
4
LOAD CURRENT (A)
5 6 7
NC
5.6k
8 9
0.1 F
0.1 F
1k
10 11
C
C
D1: MBRS330T3
L
Q1A, Q1B, Q2: FAIRCHILD FDS6670A
O
IN
OUT
12 13 14 15
: SUMIDA CDEP105-1R3-MC-S
: SANYO 6TPB330M
: SANYO 4TPB470M
3832 F12b
Q2
0.1 F
1N5817
Q1A, Q1B
2 IN PARALLEL
LTC3832/LTC3832-1
D1
1.3 H
L
O
+
+
C
330 F
C
470 F
IN
OUT
3
2
3832 F12a
V
3.3V
V
2.5V
14A
IN
OUT
sn3832 3832fs
19