Datasheet

LTC3851A
9
3851afa
FuncTional DiagraM
–
+
–
+
–
+
–
+
V
IN
2µA
SLOPE COMPENSATION
UVLO
OSC
S
RQ
5k
RUN
SWITCH
LOGIC
AND
ANTI-
SHOOT
THROUGH
BG
ON
PULSE SKIP
0.8V
OV
1
100k
1.22V0.64V
I
TH
R
C
INTV
CC
I
LIM
I
THB
I
CMP
C
C1
EA
SS
R1
0.88V
R2
RUN
GND
INTV
CC
I
REV
SW
TG
C
B
V
IN
C
IN
V
IN
SLEEP
BOOST
BURSTEN
–
+
OV
C
VCC
V
OUT
C
OUT
M2
M1
L1
D
B
MODE/PLLIN
100k
SENSE
+
SENSE
–
–
+
0.8V
REF
TK/SSRUN
0.4V
–
+
V
FB
FREQ/PLLFLTR
PLL-SYNC
5V REG
MODE/SYNC
DETECT
+
+
1µA
C
SS
–
+
3851A FD
+