Datasheet

8
LTC2846
sn2846 2846fs
BLOCK DIAGRA
W
C1
–
C1
+
V
DD
V
CC
C1
–
C1
+
V
DD
V
CC
PGND
V
IN
SHDN
C2
+
C2
–
V
EE
GND
C2
+
C2
–
V
EE
GND
CHARGE PUMP
D1
D1A
50Ω
125Ω
50Ω
S1
S2
D1B
D1
D2
D2A
50Ω
125Ω
50Ω
S1
S2
D2B
S3
S2
20k
20k
20k
20k
125Ω
S2
S3
125Ω
10k 6k
S1
51.5Ω
D3/R1 A
D3/R1 B
51.5Ω
10k
10k
10k
51.5Ω
R2A
R2B
51.5Ω
D2
D3
DCE/DTE
R1
D3
R1
R2
R2
6k
20k
20k
MODE
SELECTION
LOGIC
S2
S3
125Ω
10k
10k
51.5Ω
R3A
R3B
2846 BD
51.5Ω
R3
R3
6k
335
6
7
8
9
10
11
19
12
13
14
V
IN
17
M0
15
M1
16
M2
18
32
31
GND
V
IN
SHDN
SW
FB
SGND
SW
FB
GND
BOOST SWITCHING REGULATOR
362
3
4
35
34
30
29
28
27
26
25
24
23
22
21
20