Manual

MAX1508
Li+ Linear Battery Charger with Integrated Pass FET,
Thermal Regulation, and
ACOK in 3mm x 3mm TDFN
_______________________________________________________________________________________ 9
MAX1508
1µF
2.8kΩ
IN
CHG
1µF
4.2V Li+
BATT
EN
GND
SYSTEM
VL
ISET
AC/DC
ADAPTER
VI/O
VI/O
CHARGE-CURRENT MONITOR
LOW: CHARGE, HIGH: FULL OR OFF
ACOK
0.47µF
Figure 3. µP-Interfaced Li+ Battery Charger
MAX1508
1µF
15.4kΩ
4.3kΩ
IN
CHG
1µF
4.2V Li+
BATT
EN
N
GND
SYSTEM
VL
ACOK
ISET
USB PORT
VBUS
GND
D+
D-
VI/O
VI/O
HIGH: 435mA, LOW: 95mA
0.47µF
Figure 4. USB Battery Charger