Rainbow Electronics MAX1870A - Manual (Page 14)

MAX1870A
Step-Up/Step-Down
Li+ Battery Charger
14 ______________________________________________________________________________________
MAX1870A
23 4
VHP
VHN
CSSP
CSSN
DHI
DBST
CSIP
CSIN
BATT
DLOV
LDO
BLKP
CSSS
16
12
13
28
26
31
29
27
22
14
9
10
11
DCIN
REF
CLS
CCV
CCI
CCS
REFIN
ASNS
VCTL
ICTL
CELLS
IINP
PGND
32
18
17
25
1
15
7
6
5
3
2
AC
ADAPTER
VDD
HOST
DIGITAL INPUT
D/A OUTPUT
D/A OUTPUT
HI-IMPEDANCE
OUTPUT
LOGIC OUTPUT
A/D INPUT
GND
SYSTEM LOAD
+
-
R3
R4
R7
10kΩ
C6
0.01µF
C8
22µF
C9
44µF
C7
1µF
RS2
30mΩ
L1
10 µ H
C11
1µF C12
1µF
M2
M1
19
N
P
RS1b
30mΩ
GND
30
RS1a
30mΩ
R6
33Ω
C5
1µF
C1
1µF
D1
D2
OPTIONAL REVERSE-
ADAPTER PROTECTION
2.2µF
2.2µF
D3
D4
R5
10kΩ
C2
0.01µF
C3
0.01µF
C4
0.01µF
SHDN
Figure 1. µC-Controlled Typical Application Circuit