Datasheet

LTC3833
29
3833f
APPLICATIONS INFORMATION
V
RNG
V
IN
MODE/PLLIN
V
OUT
PGOOD
RUN
SENSE
–
SENSE
+
R
PGD
100k
R
F1
10Ω
R
F2
10Ω
INTV
CC
R
VIN
2.2Ω
LTC3833
R
FB2
15k
R
FB1
10k
C
IN1
: SANYO 16SVP180M
C
OUT1
: SANYO 2R5TPE330M9
D
B
: CENTRAL CMDSH-3
L1: PULSE PA0515.471NLT
MB: RENESAS RJK0330DPB
MT: RENESAS RJK0305DPB
D
B
MT
INTV
CC
MB
C
OUT1
330µF
2.5V
×2
C
OUT2
100µF
×2
L1
0.47µH
R
SENSE
1.5mΩ
TG
C
B
0.1µF
C
IN2
22µF
×2
C
IN1
180µF
16V
V
OUT
1.5V
20A
3833 F10a
V
IN
4.5V TO 14V
C
VIN
0.1µF
C
F
1000pF
C
VCC
4.7µF
TRACK/SS
ITH
RT
R
T
137k
C
ITH1
220pF
C
ITH2
47pF
C
SS
0.1µF
R
ITH
84.5k
EXTV
CC
SGND
BOOST
SW
INTV
CC
BG
PGND
V
OSNS
+
V
OSNS
–
+
+
Efficiency
LOAD CURRENT (A)
0.1
40
EFFICIENCY (%)
80
90
100
1 10 100
3833 F10b
70
60
50
V
IN
= 12V
V
OUT
= 1.5V
PULSE-SKIPPING
MODE
FORCED
CONTINUOUS
MODE
Figure 10. 1.5V, 20A, 300kHz High Current Step-Down Converter