Datasheet

LTC3855
11
3855f
FuncTional block DiagraM
4.7V
–
+
–
+
–
+
V
IN
1µA
SLOPE COMPENSATION
UVLO
SLOPE RECOVERY
ACTIVE CLAMP
OSC
TEMPSNS
S
R Q
3k
RUN
SWITCH
LOGIC
AND
ANTI-
SHOOT
THROUGH
BG
ON
FCNT
0.6V
OV
1.2V0.5V
I
TH
R
C
INTV
CC
INTV
CC
I
LIM
I
CMP
C
C1
SS
SGND
R1
0.66V
R2
RUN
PGND
PGOOD
INTV
CC
EXTV
CC
I
REV
SW
TG
C
B
V
IN
C
IN
V
IN
SLEEP
BOOST
BURSTEN
–
+
–
+
UV
OV
C
VCC
V
OUT
C
OUT
M2
M1
L1
D
B
MODE/PLLIN
SENSE
+
SENSE
–
–
+
0.6V
REF
TK/SSRUN
0.55V
–
+
V
FB
FREQ
PLL-SYNC
MODE/SYNC
DETECT
40k
40k
40k
40k
+
5V
REG
1.2µA
C
SS
+
DIFFP
DIFFN
–
+
–
+
F
F
CLKOUT
0.54V
–
+
DIFFOUT
PHASMD ITEMP
3855 FBD
1
51k
I
THB
–
+
EA
+
DIFFAMP