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LTC3854_15 Datasheet, PDF (8/28 Pages) Linear Technology – Small Footprint, Wide VIN Range Synchronous Step-Down DC/DC Controller | |||
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LTC3854
FUNCTIONAL DIAGRAM
SENSEâ
SENSE+
OSCILLATOR
INTVCC
UVLO
CLK
SLOPE COMP
GENERATOR
ON
SQ
R
V TO I
CONVERTER
VSENSE â ICS
CURRENT
TG_OFF
SENSE
COMPARATOR
+
ICMP
â
1.2V
0.88V
0.80V
BANDGAP/
LDO
DRIVE
CONTROL
AND
ANTI-SHOOT
THROUGH
MAIN
SWITCH
DRIVER
SYNCHRONOUS
SWITCH DRIVER
OV
0.88V
RUN
VIN
INTVCC
BOOST
TG
SW
BG
GND
VFB
1.2V
SS
0.4V
SD
1.25µA
ITH
ERROR
AMP +
0.8V
LEVEL SHIFT
VITH
RUN/SS
ITH
3854 FD
3854fb
8
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