Datasheet

LTC3646/LTC3646-1
8
36461fa
For more information www.linear.com/LTC3646
FuncTional block DiagraM
3646 BD
ON-TIME CONTROLLER
OSCILLATOR
CONTROL
LOGIC
+
–
+
–
+
–
+
–
INTV
CC
– 0.3V
+
–
SOFT-START
0.6V
REF
EA
UV
OV
R
S Q
5V REG
4.5V
C
SVIN
1.21V
RUN
MODE/SYNC
RT
TG
ON
BG
V
ON
R
RT
R
COMP
C
COMP
ITH
+
–
C
PVIN
PVINEXTV
CC
C
VCC
INTV
CC
BOOST
SW
C
BOOST
V
OUT
C
OUT
SVIN
+
–
+
–
0.555V
SENSE
+
SENSE
–
0.645V
L1
PGND
PGOOD
V
FB
SGND
I
REV
I
CMP
R1
R2
t
ON
=
V
ON
V
IN
• f
O