ltc3810 Linear Technology Corporation, ltc3810 Datasheet - Page 11

• Manufacturer Part Number: ltc3810
• Description: 100v Current Mode Synchronous Switching Regulator Controller
• Manufacturer: Linear Technology Corporation

FUNCTIONAL DIAGRAM
V
C
IN
C2
V
IN
R
R
R
UV1
UV2
ON
MODE/SYNC
PLL/LPF
0.8V
UVIN
V
R
V
I
I
14
10
ON
RNG
TH
C
7
4
1
5
8
C
ON
C1
1.4V
0.7V
+
–
t
F
I
ON
CMP
2.6V
=
–
+
+
–
V
PLL-SYNC
I
VON
ION
V
×
IN
FOLDBACK
(76pF)
UV
0.8V
+ +
20k
I
TH
REG
EA
5V
’
INTV
–
R
S Q
FAULT
+
–
CC
FB
OVERTEMP
0.8V
1.4μA
REF
100nA
I
SENSE
REV
4V
INTV
EXTV
UV
11
CC
–
+
SS/TRACK
CC
1.5V
270μA
INTV
LOGIC
MODE
+
N
TIMEOUT
DRV
LOGIC
SHDN
RUN
CC
6.2V
12V
INTV
DRV OFF
–
13
SHDN
CC
10V
SHDN
FCNT
ON
OV
–
+
ON
OFF
SWITCH
LOGIC
UV
OV
+
+
+
+
–
–
–
–
200μA
10V
0.72V
0.88V
6.7V
SENSE
SENSE
INTV
EXTV
BOOST
BGRTN
DRV
PGOOD
SGND
NDRV
SW
V
TG
BG
15
17
16
28
27
26
25
18
19
20
21
12
6
9
FB
CC
CC
CC
D
+
–
B
C
C
B
VCC
LTC3810
V
V
IN
IN
M3
M1
M2
+
L1
+
+
C
C
IN
OUT
11
V
R
R
OUT
3810 FD
FB2
FB1
3810fa