Rainbow Electronics MAX8724 - Manual (Page 14)

MAX1908/MAX8724
Low-Cost Multichemistry Battery Chargers
14 ______________________________________________________________________________________
TO EXTERNAL
LOAD
MAX1908
MAX8724
CLS REF
GND
CELLS
REFIN (4 CELLS SELECT)
DLOV
AC ADAPTER
INPUT
8.5V TO 28V
DHI
D3
BST
BATTERY
ACIN
D2
LDO
LDO
16.8V OUTPUT VOLTAGE
2.5A CHARGE LIMIT
4A INPUT CURRENT LIMIT
R6
59kΩ
1% R7
19.6kΩ
1%
R11
15kΩ
R12
12kΩ
C5
1µF
C12
1.5nF
SHDN
ICHG
IINP
R19
10kΩ
1%
R20
10kΩ
1%
CCV
C11
0.1µF
R5
1kΩ
CCI
CCS
C10
0.01µF C9
0.01µF
C12
1µF
C1
2 × 10µF
C13
1µF
C15
0.1µF
LX
C16
1µF
LDO
R13
33Ω
CSSP CSSN
RS1
0.01Ω
L1
10µH
RS2
0.015Ω
CSIP
CSIN
PGND
DLO
N1b
N1a
FROM HOST µP
(SHUTDOWN)
N
BATT
GND PGND
C4
22µF
BATT+
REFIN
VCTL
DCIN
BATT-
THM
ICTL
R14
10.5kΩ
1%
R15
8.25kΩ
1%
R16
8.25kΩ
1%
P1
R17
19.1kΩ
1%
R18
22kΩ
1%
ACOK
0.01µF 0.01µF
Figure 2. Typical Application Circuit with Fixed Charging Parameters
Typical Application Circuits (continued)