Datasheet

LTC3775
9
3775fa
BLOCK DIAGRAM
+
–
PGND
TG
BOOST
I
LIMB
V
ILIMB
V
IN
R
ILIMB
R
SENSE
SENSE
INTV
CC
10µA
INTV
CC
D
B
L
C
B
C
OUT
V
OUT
3775 BD
Q
T
SW
IREV
MODE
0.6V
EA
PWM
+
–
PGND
0.2 • V
ILIMB
CBLIM
+
–
CTLIM
+
SWITCH
LOGIC AND
ANTISHOOT-
THROUGH
BG
Q
B
PGND
FB
FB
C2
COMP
SGND
+
–
+
–
+
–
MAX
+
–
1µA
INTV
CC
I
SS
MODE
3.6V
UVLO
EN
0.6V
V
IN
V
IN
INTV
CC
INTV
CC
EXT SYNC
LINE
FEEDFORWARD
MODE/SYNC
DETECT
OVERTEMP
REF
5.2V REG
OSC
SS
0.66V
V
IN
+
+
–
C
VCC
C
SS
C1
C3
R3
R2
50k
R
A
R
B
SS
MODE/SYNC
FREQ
R
SET
R5
R4
RUN/SHDN
SHDN
V
IN
I
RUN
1µA
CHIP
SHUTDOWN
1.22V
INTV
CC
+
–
0.74V
R
ILIMT
I
LIMT
INTV
CC
100µA