AAT3680
Lithium-Ion/Polymer
Linear Battery Charge Controller
™
BatteryManager
General Description
Features
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.
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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
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Full Battery Charge Auto Turn-Off / Sleep Mode
Over-Voltage, Over-Current, and Over-
Temperature Protection
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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
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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.
Applications
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Cellular Phones
Desktop Chargers
Personal Digital Assistants (PDAs)
USB Chargers
Typical Application
RSENSE
Q1
SMA
BATT+
0.2Ω
FZT968
VP
B34DLA
C2
1µF
R1
1.9k
DRV
CSI
VP
T2X
BAT
TS
BATT-
VP
RT1
AAT3680
TEMP
VSS
STAT
C3
10µF
Battery
RT2
Pack
LED1
R2
1k
3680.2006.03.1.6
1