Datasheet

LTC3838
47
3838fa
TYPICAL APPLICATIONS
Figure 17. 6V to 26V Input, 1.2V/15A and 1.5V/15A Dual Output, 350kHz, R
SENSE
, Step-Down Converter
100k
3838 F17
1nF
0.1µF
L2
0.47µH
C
OUT4
100µF
w2
C
OUT3
330µF
w2
DB2
MT2
MB2
+
LTC3838
2.2
2.2
10k
22pF 22pF
220pF 220pF
39.2k 39.2k
100k
115k
10k
10k
60.4k
60.4k
V
IN
1µF
1nF
4.7µF
0.1µF
0.01µF 0.01µF
L1
0.47µH
R
S1
0.002
R
S2
0.002
C
OUT2
330µF
w2
C
OUT1
100µF
w2
V
OUT1
1.2V
12A
V
OUT2
1.5V
12A
V
IN
6V TO 26V
10k
15k
10k
SENSE1
–
SENSE1
+
BOOST1
TG1
SW1
SENSE2
+
BOOST2
TG2
SW2
DRV
CC1
INTV
CC
DRV
CC2
EXTV
CC
DB1
SENSE2
–
BG1 BG2
V
FB2
PGND
V
OUTSENSE1
+
V
OUTSENSE1
–
PGOOD1 PGOOD2
TRACK/SS1
ITH1
DTR1
V
RNG1
TRACK/SS2
ITH2
DTR2
PHASMD
MODE/PLLIN
CLKOUT
RUN2
V
RNG2
SGND
RUN1
RT
PGOOD1 PGOOD2
MB1
MT1
1µF
C
IN2
10µF
w3
+
C
IN1
220µF
+
100
100
100
100
C
IN1
: PANASONIC EEEFK1V221P
C
IN2
: TAIYO YUDEN GMK325BJ106MN-T
C
OUT1
, C
OUT4
: MURATA GRM31CR60J107ME39L
C
OUT2
, C
OUT3
: SANYO 2R5TPE330M9
DB1, DB2: CENTRAL SEMI CMDSH-4ETR
L1, L2: WÜRTH 7443330047
MT1, MT2: RENESAS RJK0305DPB
MB1, MB2: RENESAS RJK0330DPB