LTC3890
Typical applicaTions
High Efficiency 8.5V Dual-Phase Step-Down Converter
+
–
SENSE1
SENSE1
INTV
C1
1nF
CC
R
B1
100k
100k
R
A1
PGOOD1
PGOOD2
10.5k
V
FB1
MBOT1
C
100pF
ITH1A
BG1
L1
8µH
V
8.5V
6A
OUT1
SW1
R
ITH1
34.8k
R
SENSE1
BOOST1
ITH1
10mΩ
C
OUT1
330µF
C
ITH1
C
C
SS1
0.01µF
LTC3890
TRACK/SS1
B1
470pF
0.1µF
TG1
MTOP1
I
D1
LIM
V
PHSMD
CLKOUT
PLLIN/MODE
IN
INTV
V
R
CC
IN
MODE
9V TO 60V
C
IN
220µF
100k
INTV
CC
C
INT
SGND
4.7µF
R
PGND
RUN
V
OUT
EXTV
1000k
CC
V
IN
RUN1
RUN2
FREQ
D2
R
41.2k
FREQ
TG2
MTOP2
C
0.1µF
B2
TRACK/SS2
C
ITH2
100pF
R
L2
8µH
BOOST2
SW2
SENSE2
10mΩ
ITH2
C
OUT2
MBOT2
BG2
330µF
V
FB2
–
+
SENSE2
C2
1nF
SENSE2
3890 TA03
MTOP1, MTOP2, MBOT1, MBOT2: RJK0651DPB
L1, L2: COILCRAFT SER1360-802KL
C
, C
: SANYO 10TPE330M
OUT1 OUT2
D1, D2: DFLS1100
3890fb
33
Linear Systems [ Linear Systems ]
