Datasheet

LTC3613
29
3613fa
APPLICATIONS INFORMATION
V
RNG
SV
IN
PV
IN
MODE/PLLIN
V
OUT
PGOOD
RUN
SENSE
–
SENSE
+
R
PGD
100k
R
F1
10
R
F2
10
INTV
CC
R
VIN
2.2
LTC3613
R
FB2
15k
R
FB1
10k
C
IN1
: SANYO 25SVPD82M
C
OUT1
: SANYO 2R5TPE330M9
D
B
: CENTRAL CMDSH-3
L1: COILTRONICS FP1109-R47
D
B
INTV
CC
C
OUT1
330µF
2.5V
×2
C
OUT2
100µF
×2
L1
0.47µH
R
SENSE
1.5m
C
B
0.1µF
C
IN2
22µF
×2
C
IN1
82µF
25V
V
OUT
1.5V
15A
3833 F11
V
IN
4.5V TO 24V
C
VIN
0.1µF
C
F
1000pF
C
VCC
4.7µF
TRACK/SS
ITH
RT
R
T
115k
C
ITH1
270pF
C
ITH2
47pF
C
SS
0.1µF
R
ITH
21k
EXTV
CC
SGND
BOOST
SW
INTV
CC
PGND
V
OSNS
+
V
OSNS
–
+
+
Efficiency
Figure 10. 1.5V, 15A, 350kHz High Current Step-Down Converter
LOAD CURRENT (A)
0.1
40
EFFICIENCY (%)
80
90
100
1 10 100
3613 F11a
70
60
50
PULSE-SKIPPING
MODE
FORCED
CONTINUOUS
MODE
V
IN
= 12V
V
OUT
= 1.5V