Datasheet

LTC3633A-2/LTC3633A-3
10
3633a23f
BLOCK DIAGRAM
0.6V (LTC3633A-2)
1.5V (LTC3633A-3)
6V (LTC3633A-2)
12V (LTC3633A-3)
V
ON
PV
IN
C
IN
1.22V
INTV
CC
INTV
CC
RUN
–
+
+
ITH
PGOOD
A
V
= 1
t
ON
=
V
VON
I
ION
I
ON
PV
IN
I
CMP
I
REV
OSC1
140k
ON
TG
M1
BOOST
SW
PGND
FB
SENSE
–
SENSE
+
1.4µA
0.6V
REF
M2
BG
SWITCH
LOGIC
AND
ANTI-
SHOOT
THROUGH
I
ON
CONTROLLER
COMP
SELECT
OSC
OSC
PLL-SYNC
PHASE
SELECT
MODE
SELECT
R
SQ
C
BOOST
L1
C
OUT
–
–
+
–
+
EA
C
C1
R
C
0.648V
0.552V
TRACK
0.48V AT START-UP
0.10V AFTER START-UPCHANNEL 1
CHANNEL 2 (SAME AS CHANNEL 1)
3633a23 BD
OSC1
OSC2
RT
R
RT
PHMODE
R2
R1
INTERNAL
SOFT-START
IDEAL DIODES
–
–
+
+
–
+
BURSTFC
3.3V
REG
MODE/SYNC
TRACKSS
SGND
INTV
CC
C
VCC
C
SS
SV
IN
C
SVIN
RUN
RUN
0V
UV SS