Datasheet

LTC3854
8
3854fb
FUNCTIONAL DIAGRAM
BANDGAP/
LDO
1.2V
0.88V
0.80V
0.88V
1.2V
OSCILLATOR
MAIN
SWITCH
DRIVER
DRIVE
CONTROL
AND
ANTI-SHOOT
THROUGH
INTV
CC
UVLO
SYNCHRONOUS
SWITCH DRIVER
–
+
OV
–
+
RUN
–
+
SS
+
–
0.4V
+
0.8V
ERROR
AMP
S Q
R
ON
CLK
–
+
V TO I
CONVERTER
V
SENSE
→ ICS
I
CMP
SLOPE COMP
GENERATOR
TG_OFF
V
IN
INTV
CC
BOOST
TG
SW
BG
GND
RUN/SS
ITH
V
FB
SENSE
+
SENSE
–
3854 FD
ITH
V
ITH
CURRENT
SENSE
COMPARATOR
LEVEL SHIFT
–
+
SD
1.25µA