LTC3775 查看數據表（PDF） - Linear Technology
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LTC3775 Datasheet PDF : 34 Pages
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BLOCK DIAGRAM
LTC3775
VIN
CVCC
VIN
R4
R5
RUN/SHDN
0.74V
IRUN
1μA
– SHDN
1.22V
+
CHIP
SHUTDOWN
INTVCC
3.6V
– EN
+
– UVLO
+
VIN
5.2V REG
REF
OVERTEMP
RSET
FREQ
MODE/SYNC
EXT SYNC
MODE/SYNC
OSC
DETECT
50k
1μA
MODE
SS
INTVCC
CSS
COMP
ISS
VIN
R2
C2
C1
FB
R3
RB RA
C3
0.6V
SS
FB
+ EA
+
–
LINE
FEEDFORWARD
0.66V
–
+
PWM
–
+
MAX
INTVCC
INTVCC
0.6V
CTLIM
100μA
ILIMT
SENSE
CBLIM
IREV
INTVCC
PGND
0.2 • VILIMB
ILIMB
10μA
VILIMB
MODE
PGND
SWITCH
LOGIC AND
ANTISHOOT-
THROUGH
BOOST
TG
SW
INTVCC
BG
PGND
SGND
RILIMT
VIN
RSENSE
RILIMB
INTVCC
DB
CB
QT
QB
L
COUT
VOUT
3775 BD
3775fa
9
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