MAX1909 Maxim Integrated Products, MAX1909 Datasheet - Page 14

• Manufacturer Part Number: MAX1909
• Description: (MAX8725 / MAX1909) Multichemistry Battery Charger
• Manufacturer: Maxim Integrated Products

Multichemistry Battery Chargers with Automatic
System Power Selector
Figure 1. Typical Operating Circuit Demonstrating Hardwired Control
14
OUTPUT VOLTAGE: 12.6V
______________________________________________________________________________________
CHARGE I LIMIT: 3.0A
AC ADAPTER
SYSTEM
HOST
TO
OUTPUT
GND
590kΩ
1%
R6
LDO
LDO
R9
10kΩ
196kΩ
R8
1M
1%
R7
LDO
Ω
R5
10kΩ
C11
0.1µF
D4
LDO
(INPUT I LIMIT: 7.5A)
0.01µF
C5
1µF
C9
C22
1µF
100kΩ
R4
P3
REF
C10
0.01µF
0.1µF
PDS
SRC
DCIN
VCTL
ICTL
ACIN
MODE
CLS
ACOK
PKPRES (MAX8725 ONLY)
CCV
CCI
CCS
CSSP
MAX1909
MAX8725
0.01Ω
REF
RS1
C12
1µF
CSSN
PGND
DLOV
DHIV
CSIN
BATT
CSIP
GND
PDL
LDO
DLO
DHI
0.1µF
SRC
C13
1µF
C17
0.1µF
N1
0.015Ω
R13
33Ω
PGND
C16
1µF
P1
RS2
C4
22µF
L1
10µH
GND
SYSTEM LOAD
C1
22µF
TO
BATT +
TEMP
BATT -
BATTERY
P2