Datasheet

LTC3850/LTC3850-1
31
38501fc
Figure 17. 2.5V/15A, 1.8V/15A Converter with DCR Sensing and Coincident Rail Tracking
F
SW
= 350kHz
TYPICAL APPLICATIONS
C4
0.1µF
TK/SS1 I
TH1
V
FB1
V
FB2
I
TH2
TK/SS2 SENSE2
–
BOOST1
BG1
V
IN
INTV
CC
BG2
PGND
BOOST2
SENSE1
+
RUN1
FREQ/
PLLFLTR
MODE/
PLLIN
SW1 TG1SENSE1
–
SENSE2
+
RUN2SGND
I
LIM
SW2 TG2
EXTV
CC
PGOOD
PGOOD
M4 RJK0301- DPB
M3 HAT2168H
R27 4.02k
R1 43.2k
RV
IN
2.2Ω
C
SS
0.1µF
C6
100pF
C7
1000pF
C
B1
0.1µF
D3
CMDSH-3
M2 RJK0301- DPB
M1 HAT2168H
D4
CMDSH-3
CV
CC
4.7µF
CV
IN
1µF
C
B2
0.1µF
C10 33pF
L1
0.68µH
C
OUT1
330µF 4V 2X
C
IN
180µF
V
OUT1
2.5V/ 15A
V
OUT2
1.8V/ 15A
C5
0.1µF
R
PG
100k
L1, L2: VISHAY IHLP5050EZ-01 0.68µH C
OUT1
, C
OUT2
: SANYO 4TPD330M
R2 20k
R12
7.5k
R3 20k
C15 47pF
R4 25.5k
C11
1000pF
R18
4.99k
C12
100pF
20k
V
IN
7V TO 14V
PGND GND
LTC3850
38501 TA02
R30 4.02k
L2
0.68µH
+
C
OUT2
330µF 4V 2X
+
+
10µF 2x
25.5k
2.10k
10k