Datasheet

MAX1870A
Step-Up/Step-Down
Li+ Battery Charger
______________________________________________________________________________________ 15
23476
VHP
VHN
CSSP
CSSN
DHI
DBST
CSIP
CSIN
BATT
DLOV
LDO
BLKP
CSSS
16
28
26
31
29
27
22
DCIN
REF
CELLS
CLS
PGND
32
18
17
25
1
3
REFIN
9
VCTL
11
ICTL
12
ASNS
10
IINP
14
CCV
5
15
2
13
SYSTEM LOAD
C8
22μF
C9
44μF
C7
1μF
RS2
30mΩ
L1
10μH
C11
1μF
C12
1μF
M2
M1
19
N
P
RS1b
30mΩ
GNDCCSCCI
30
RS1a
30mΩ
R6
33Ω
C5
1μF
C1
1μF
2.2μF
2.2μF
D3
D4
R4
OPEN
R3
SHORT
R9
OPEN
R10
OPEN
R1
SHORT
R12
OPEN
LDO
R7
10kΩ
R5
10kΩ
C6
0.01μF
C3
0.01μF
C4
0.01μF
C2
0.01μF
SHDN
AC
ADAPTER
+
-
D1
D2
OPTIONAL
MAX1870A
OPTIONAL REVERSE-
ADAPTER PROTECTION
Figure 2. Stand-Alone Typical Application Circuit