ltc3851-1 Linear Technology Corporation, ltc3851-1 Datasheet - Page 9

• Manufacturer Part Number: ltc3851-1
• Description: Synchronous Step-down Switching Regulator Controller
• Manufacturer: Linear Technology Corporation

FUNCTIONAL DIAGRAM
FREQ/PLLFLTR
0.8V
REF
V
IN
PLL-SYNC
0.4V
–
SLEEP
MODE/PLLIN
100k
+
I
THB
1
I
CMP
MODE/SYNC
DETECT
100k
+
–
OSC
INTV
+
CC
EA
+
5k
–
SLOPE COMPENSATION
R
S
R
I
C
–
+
C
TH
C1
UVLO
Q
I
0.64V
REV
–
SS
–
+
0.8V
+
1.25V
–
RUN
PULSE SKIP
RUN
+
RUN
ON
OV
THROUGH
SWITCH
SHOOT
LOGIC
ANTI-
AND
TK/SS
C
BURSTEN
SS
1μA
5V REG
OV
UV
+
+
–
–
0.72V
38511 FD
SENSE
SENSE
PGOOD
BOOST
INTV
C
GND
V
SW
BG
VCC
V
TG
IN
FB
0.88V
CC
+
–
2μA
C
D
B
B
R2
R1
+
LTC3851-1
C
IN
M1
M2
L1
V
IN
+
V
OUT
C
38511f
9
OUT