MAX1507 Datasheet, PDF (10/12 Pages) Maxim Integrated Products – Linear Li+ Battery Charger with Integrated Pass FET and Thermal Regulation in 3mm x 3mm Thin DFN

Linear Li+ Battery Charger with Integrated Pass FET
and Thermal Regulation in 3mm x 3mm Thin DFN
VBUS
GND
USB PORT
1µF
15.4kΩ
IN
BATT
1µF
MAX1507
CHG
GND
TEMP
VL
0.47µF
4.2V Li+
VI/O
ROHM
DTC114EM
ISET
EN
4.3kΩ
N
HIGH: 435mA, LOW: 95mA
VI/O
SYSTEM
D+
D-
Figure 4. USB Battery Charger
Layout and Bypassing
Connect a 1µF ceramic input capacitor as close to the
device as possible. Provide a large copper GND plane
to allow the exposed paddle to sink heat away from the
device. Connect the battery to BATT as close to the
device as possible to provide accurate battery voltage
sensing. Make all high-current traces short and wide to
minimize voltage drops. For an example layout, refer to
the MAX1507/MAX1508 evaluation kit layout.
Chip Information
TRANSISTOR COUNT: 1812
PROCESS: BiCMOS
10 ______________________________________________________________________________________