MAX1909ETIT Maxim Integrated Products, Inc., MAX1909ETIT Datasheet - Page 15

• Manufacturer Part Number: MAX1909ETIT
• Description: Multichemistry Battery Chargers With Automatic System Power Selector
• Manufacturer: Maxim Integrated Products, Inc.

Multichemistry Battery Chargers with Automatic
Figure 2. Smart-Battery Charger Circuit Demonstrating Operation with a Host Microcontroller
OUTPUT VOLTAGE: 16.8V
AC ADAPTER
OPEN-DRAIN
D/A OUTPUT
HOST
A/D INPUT
OUTPUTS
AV
OUTPUT
DD
INPUT
/REF
GND
590kΩ
SDA
SCL
1%
R6
______________________________________________________________________________________
0.1µF
C14
R19, R20
LDO
10kΩ
196kΩ
R8
1MΩ
1%
R7
LDO
D4
R9
10kΩ
R21
10kΩ
C5
1µF
(INPUT I LIMIT: 7.5A)
0.1µF
P3
10kΩ
C11
C15
1µF
R5
0.01µF
REF
C9
LDO
P4
0.1µF
C10
0.01µF
PDS
SRC
DCIN
VCTL
ICTL
MODE
ACIN
ACOK
PKPRES (MAX8725 ONLY)
IINP
CLS
CCV
CCI
CCS
CSSP
MAX1909
MAX8725
0.01Ω
System Power Selector
RS1
REF
C12
1µF
CSSN
PGND
DLOV
DHIV
CSIP
CSIN
BATT
GND
LDO
DLO
PDL
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 +
SCL
SDA
TEMP
BATT -
BATTERY
SMART
P2
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