AAT3680
Lithium-Ion/Polymer
Linear Battery Charge Controller
General Description
The AAT3680 BatteryManager is a member of
AnalogicTech's Total Power Management IC™
(TPMIC™) product family. This device is a lithium-
ion/polymer battery charge and management IC,
specifically designed for compact portable applica-
tions. The AAT3680 precisely regulates battery
charge voltage and charge current, and is capable
of two trickle charge current levels controlled by
one external pin. Battery charge temperature and
charge state are carefully monitored for fault con-
ditions. In the event of an over-current, short-cir-
cuit, or over-temperature failure, the device will
automatically shut down, protecting the charging
device and the battery under charge. A battery
charge state monitor output pin is provided to indi-
cate the battery charge status through a display
LED. The battery charge status output is a serial
interface which may also be read by a system
microcontroller.
The AAT3680 is available in a Pb-free, 8-pin MSOP
or 12-pin TSOPJW package, specified over the
-20°C to +70°C temperature range.
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
BatteryManager
™
Input Voltage Range: 4.5V to 7V
1% Accurate Preset Voltages: 4.1V, 4.2V
Low Operation Current, Typically 0.5mA
Programmable Charge Current
Automatic Recharge Sequencing
Battery Temperature Monitoring
Deep Discharge Cell Conditioning
Fast Trickle Charge Option with Thermal
Over-Ride
Full Battery Charge Auto Turn-Off / Sleep Mode
Over-Voltage, Over-Current, and Over-
Temperature Protection
Power On Reset
LED Charge Status Output or System
Microcontroller Serial Interface
Temperature Range: -20°C to +70°C
8-Pin MSOP or 12-Pin TSOPJW Package
Applications
•
•
•
•
Cellular Phones
Desktop Chargers
Personal Digital Assistants (PDAs)
USB Chargers
Typical Application
R
SENSE
0.2Ω
Q1
FZT968
SMA
BATT+
VP
B34DLA
R1
1.9k
DRV
T2X
VP
CSI
BAT
C2
1µF
BATT-
AAT3680
VP
TS
RT1
TEMP
VSS
C3
10µF
RT2
LED1
R2
1k
STAT
Battery
Pack
3680.2006.03.1.6
1
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
