LTC3853 Linear Technology, LTC3853 Datasheet - Page 10

• Manufacturer Part Number: LTC3853
• Description: Multiphase Synchronous Step-Down Controller
• Manufacturer: Linear Technology

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LTC3853
FUNCTIONAL DIAGRAM
10
I
FREQ/PLLFLTR
LIM
0.8V
REF
V
IN
PLL-SYNC
0.55V
–
MODE/PLLIN
SLEEP
I
51k
THB
1
I
+
CMP
MODE/SYNC
DETECT
+
–
OSC
INTV
CC
+
3k
EA
+
–
SLOPE RECOVERY
COMPENSATION
ACTIVE CLAMP
S
R
–
+
SLOPE
UVLO
Q
I
REV
I
TH
0.64V
R
–
–
C
SS
C
F
C1
0.8V
+
+
EXTV
–
1.2V
–
CC
RUN
RUN
F
4.7V
FCNT
+
RUN
+
ON
OV
THROUGH
SWITCH
BURSTEN
LOGIC
SHOOT
ANTI-
AND
REG
TK/SS
5V
1.3μA
C
SS
UV
OV
+
–
+
–
SENSE
SENSE
PGOOD
3853 FD
BOOST
INTV
C
PGND
SGND
V
SW
BG
VCC
V
TG
IN
FB
0.74V
0.86V
CC
+
–
0.5μA
C
D
B
B
R2
R1
+
C
IN
M1
M2
V
L1
IN
INTV
CC
+
V
OUT
3853f
C
OUT