LTC3854_15 Datasheet, PDF (8/28 Pages) Linear Technology – Small Footprint, Wide VIN Range Synchronous Step-Down DC/DC Controller

LTC3854
FUNCTIONAL DIAGRAM
SENSE^–
SENSE⁺
OSCILLATOR
INTV_CC
UVLO
CLK
SLOPE COMP
GENERATOR
ON
SQ
R
V TO I
CONVERTER
V_SENSE → ICS
CURRENT
TG_OFF
SENSE
COMPARATOR
+
I_CMP
–
1.2V
0.88V
0.80V
BANDGAP/
LDO
DRIVE
CONTROL
AND
ANTI-SHOOT
THROUGH
MAIN
SWITCH
DRIVER
SYNCHRONOUS
SWITCH DRIVER
OV
0.88V
RUN
V_IN
INTV_CC
BOOST
TG
SW
BG
GND
V_FB
1.2V
SS
0.4V
SD
1.25µA
ITH
ERROR
AMP ₊
0.8V
LEVEL SHIFT
V_ITH
RUN/SS
ITH
3854 FD
3854fb
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