Datasheet

LTC3890
28
3890fc
APPLICATIONS INFORMATION
Figure 11. Recommended Printed Circuit Layout Diagram
C
B2
C
B1
C1*
C2*
R1*
R
PU1
PGOOD1
V
PULL-UP
C
INTVCC
C
IN
D1*
1µF
CERAMIC
M1 M2
M3
M4
D2*
C
VIN
V
IN
R
IN
L1
L2
C
OUT1
V
OUT1
GND
V
OUT2
3890 F11
C
OUT2
R
SENSE
R
SENSE
R
PU2
PGOOD2
V
PULL-UP
f
IN
1µF
CERAMIC
ITH1
V
FB1
SENSE1
+
SENSE1
–
FREQ
SENSE2
–
SENSE2
+
V
FB2
ITH2
TRACK/SS2
TRACK/SS1
PGOOD2
PGOOD1
TG1
SW1
BOOST1
BG1
V
IN
PGND
EXTV
CC
INTV
CC
BG2
BOOST2
SW2
TG2
ILIM
PHASMD
CLKOUT
PLLIN/MODE
RUN1
RUN2
SGND
+
+
+
LTC3890
R2*
*R1, R2, C1, C2, D1, D2 ARE OPTIONAL.
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