LTC3810-5
11
38105fd
FuncTional DiagraM
–
+
–
+
1.4V
FAULT
0.7V
FB
V
RNG
3
–
+
–
+
+
–
+
V
VON
I
ION
t
ON
=
(76pF)
R
S Q
20k
I
CMP
I
REV
×
SHDN
SWITCH
LOGIC
BG
ON
FCNT
OV
1.5V
EA
0.8V
12
38105 FD
SGND
R
FB1
R
FB2
12
RUN
SHDN
18
BGRTN
19
PGOOD
V
FB
DRV
CC
17
SENSE
+
24
SW
25
TG
BOOST
C
B
26
27
EXTV
CC
15
INTV
CC
NDRV
16
14
–
+
–
+
UV
0.72V
OV
0.88V
C
VCC
V
OUT
M2
M1
M3
L1
C
OUT
C
IN
+
SS/TRACK
D
B
4
+
+
V
IN
V
IN
SENSE
–
20
–
+
OVERTEMP
SENSE
FOLDBACK
0.8V
REF
5V
REG
INTV
CC
I
TH
’
5
8
I
ON
31
V
IN
V
IN
2
V
ON
PLL/LPF
MODE/SYNC
UVIN
R
ON
0.8V
R
UV1
R
UV2
–
+
F
TIMEOUT
LOGIC
INTV
CC
MODE
LOGIC
N
DRV
EXTV
CC
INTV
CC
PLL-SYNC
–
+
V
IN
UV
13
–
+
INTV
CC
UV
DRV OFF
100nA
1.4µA
270µA
–
+
–
+
OFF
ON
5.5V
4.7V
4.2V
9V
5.5V
SHDN
2.6V
4V
I
TH
C
C2
6
R
C
C
C1
9
7
