Rainbow Electronics MAX8804Z - Manual (Page 13)

Layout and Bypassing
Connect the input capacitors as close as possible to
the IC. Provide a large copper GND plane to allow the
exposed paddle to sink heat away from the IC. Connect
the battery to BAT as close as possible to the IC to pro-
vide accurate battery voltage sensing. Make all high-
current traces short and wide to minimize voltage
drops. A sample layout is available in the MAX8804Z
evaluation kit to speed designs.
MAX8804Y/MAX8804Z
High-Voltage, Dual-Input, USB/AC
Adapter Chargers in 2mm x 3mm TDFN
______________________________________________________________________________________ 13
DC CHG
POK
BAT
USB
GND
USBPWR
SET
USB PORT μP
SYSTEM I/O
2.2 μF
MAX8804Y
MAX8804Z
AC
ADAPTER
1 μF
1 μF
Li+
Figure 5. Microprocessor-Interfaced Li+ Charger with the MAX8804Y/MAX8804Z
Chip Information
PROCESS: BiCMOS
1
+
3 4
8 6 5
GND CHG USB
MAX8804Y
MAX8804Z
2
7
SET
BAT POK DC USBPWR
TDFN
2mm × 3mm
TOP VIEW
Pin Configuration