Manual

MAX1802
Digital Camera Step-Down
Power Supply
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R
C
G
C
MAX1802
+ OUTPUT
- OUTPUT
R1
R2
Q1
INPUT
1 CELL
Li+
MAIN
ON
COMP
DCON
EXT
FB
Figure 10. Auxiliary Controller, Flyback Configuration
R
C
G
C
MAX1802
V
OUT
-
V
OUT
+
D3
D2
2
D1
C3
C2
R1
R2
C1
Q1
L
INPUT
1 CELL
Li+
Main
ON
COMP
DCON
EXT
FB
Figure 11. Auxiliary Controller, Charge-Pump Configuration
Pin Configuration
MAX1802
TQFP
TOP VIEW
32 28
293031
25
26
27
REF FBC COMPC VL GND VDDC LXC PGND
10
13
15
14
1611 12
9
PGNDM
DCON1
OSC
ON1
DL1
FB1
COMP1
FB2
17
18
19
20
21
22
23
DCON3
24 ONC
FB3
COMP3
DL3
DL2
DCON2
COMP2
2
3
4
5
6
7
8DLM
LXM
DHM
VDDM
VH
ONM
COMPM
1FBM