ltc3850gn-2 Linear Technology Corporation, ltc3850gn-2 Datasheet - Page 9

• Manufacturer Part Number: ltc3850gn-2
• Description: Dual, 2-phase Synchronous Step-down Switching Controller
• Manufacturer: Linear Technology Corporation

FUNCTIONAL DIAGRAM
FREQ/PLLFLTR
0.8V
REF
V
IN
PLL-SYNC
0.55V
–
SLEEP
I
51k
THB
MODE/PLLIN
1
+
I
CMP
MODE/SYNC
DETECT
+
–
OSC
INTV
CC
+
EA
+
3k
–
SLOPE COMPENSATION
SLOPE RECOVERY
ACTIVE CLAMP
S
R
–
+
UVLO
Q
I
REV
I
TH
0.64V
R
–
–
C
SS
C
C1
F
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
1.3 μ A
C
SS
UV
OV
+
–
+
–
38502 FD
SENSE
SENSE
PGOOD
BOOST
INTV
C
PGND
SGND
V
SW
VCC
V
TG
BG
IN
FB
0.74V
0.86V
CC
+
–
0.5 μ A
C
D
B
B
R2
R1
+
LTC3850-2
C
IN
M1
M2
V
L1
IN
INTV
CC
+
V
OUT
C
OUT
38502f
9